eslint - npm Package Compare versions

Comparing version 7.20.0 to 8.50.0

bin/eslint.js

@@ -8,9 +8,6 @@ #!/usr/bin/env node
 
-/* eslint no-console:off */
+/* eslint no-console:off -- CLI */
 
 "use strict";
 
-// to use V8's code cache to speed up instantiation time
-require("v8-compile-cache");
-
 // must do this initialization *before* other requires in order to work
@@ -70,9 +67,6 @@ if (process.argv.includes("--debug")) {
 
-    // Lazy loading because those are used only if error happened.
-    const fs = require("fs");
-    const path = require("path");
+    // Lazy loading because this is used only if an error happened.
     const util = require("util");
-    const lodash = require("lodash");
 
-    // Foolproof -- thirdparty module might throw non-object.
+    // Foolproof -- third-party module might throw non-object.
     if (typeof error !== "object" || error === null) {
@@ -85,11 +79,4 @@ return String(error);
         try {
-            const templateFilePath = path.resolve(
-                __dirname,
-                `../messages/${error.messageTemplate}.txt`
-            );
+            const template = require(`../messages/${error.messageTemplate}.js`);
 
-            // Use sync API because Node.js should exit at this tick.
-            const templateText = fs.readFileSync(templateFilePath, "utf-8");
-            const template = lodash.template(templateText);
-
             return template(error.messageData || {});
@@ -140,3 +127,9 @@ } catch {
     if (process.argv.includes("--init")) {
-        await require("../lib/init/config-initializer").initializeConfig();
+
+        // `eslint --init` has been moved to `@eslint/create-config`
+        console.warn("You can also run this command directly using 'npm init @eslint/config'.");
+
+        const spawn = require("cross-spawn");
+
+        spawn.sync("npm", ["init", "@eslint/config"], { encoding: "utf8", stdio: "inherit" });
         return;
@@ -148,4 +141,5 @@ }
         process.argv,
-        process.argv.includes("--stdin") ? await readStdin() : null
+        process.argv.includes("--stdin") ? await readStdin() : null,
+        true
     );
 }()).catch(onFatalError);

conf/default-cli-options.js

@@ -27,2 +27,3 @@ /**
     cacheFile: ".eslintcache",
+    cacheStrategy: "metadata",
     fix: false,
@@ -29,0 +30,0 @@ allowInlineConfig: true,

lib/api.js

@@ -8,3 +8,6 @@ /**
 
-const { CLIEngine } = require("./cli-engine");
+//-----------------------------------------------------------------------------
+// Requirements
+//-----------------------------------------------------------------------------
+
 const { ESLint } = require("./eslint");
@@ -15,5 +18,8 @@ const { Linter } = require("./linter");
 
+//-----------------------------------------------------------------------------
+// Exports
+//-----------------------------------------------------------------------------
+
 module.exports = {
     Linter,
-    CLIEngine,
     ESLint,
@@ -23,15 +29,1 @@ RuleTester,
 };
-
-// DOTO: remove deprecated API.
-let deprecatedLinterInstance = null;
-
-Object.defineProperty(module.exports, "linter", {
-    enumerable: false,
-    get() {
-        if (!deprecatedLinterInstance) {
-            deprecatedLinterInstance = new Linter();
-        }
-
-        return deprecatedLinterInstance;
-    }
-});

lib/cli-engine/cli-engine.js

@@ -30,12 +30,7 @@ /**
         IgnorePattern,
-        getUsedExtractedConfigs
+        getUsedExtractedConfigs,
+        ModuleResolver
     }
 } = require("@eslint/eslintrc");
 
-/*
- * For some reason, ModuleResolver must be included via filepath instead of by
- * API exports in order to work properly. That's why this is separated out onto
- * its own require() statement.
- */
-const ModuleResolver = require("@eslint/eslintrc/lib/shared/relative-module-resolver");
 const { FileEnumerator } = require("./file-enumerator");
@@ -50,3 +45,3 @@
 const debug = require("debug")("eslint:cli-engine");
-const validFixTypes = new Set(["problem", "suggestion", "layout"]);
+const validFixTypes = new Set(["directive", "problem", "suggestion", "layout"]);
 
@@ -61,2 +56,3 @@ //------------------------------------------------------------------------------
 /** @typedef {import("../shared/types").LintMessage} LintMessage */
+/** @typedef {import("../shared/types").SuppressedLintMessage} SuppressedLintMessage */
 /** @typedef {import("../shared/types").ParserOptions} ParserOptions */
@@ -66,4 +62,5 @@ /** @typedef {import("../shared/types").Plugin} Plugin */
 /** @typedef {import("../shared/types").Rule} Rule */
-/** @typedef {ReturnType<CascadingConfigArrayFactory["getConfigArrayForFile"]>} ConfigArray */
-/** @typedef {ReturnType<ConfigArray["extractConfig"]>} ExtractedConfig */
+/** @typedef {import("../shared/types").FormatterFunction} FormatterFunction */
+/** @typedef {ReturnType<CascadingConfigArrayFactory.getConfigArrayForFile>} ConfigArray */
+/** @typedef {ReturnType<ConfigArray.extractConfig>} ExtractedConfig */
 
@@ -103,3 +100,5 @@ /**
  * @property {LintMessage[]} messages All of the messages for the result.
+ * @property {SuppressedLintMessage[]} suppressedMessages All of the suppressed messages for the result.
  * @property {number} errorCount Number of errors for the result.
+ * @property {number} fatalErrorCount Number of fatal errors for the result.
  * @property {number} warningCount Number of warnings for the result.
@@ -117,2 +116,3 @@ * @property {number} fixableErrorCount Number of fixable errors for the result.
  * @property {number} errorCount Number of errors for the result.
+ * @property {number} fatalErrorCount Number of fatal errors for the result.
  * @property {number} warningCount Number of warnings for the result.
@@ -167,5 +167,18 @@ * @property {number} fixableErrorCount Number of fixable errors for the result.
 function calculateStatsPerFile(messages) {
-    return messages.reduce((stat, message) => {
+    const stat = {
+        errorCount: 0,
+        fatalErrorCount: 0,
+        warningCount: 0,
+        fixableErrorCount: 0,
+        fixableWarningCount: 0
+    };
+
+    for (let i = 0; i < messages.length; i++) {
+        const message = messages[i];
+
         if (message.fatal || message.severity === 2) {
             stat.errorCount++;
+            if (message.fatal) {
+                stat.fatalErrorCount++;
+            }
             if (message.fix) {
@@ -180,9 +193,4 @@ stat.fixableErrorCount++;
         }
-        return stat;
-    }, {
-        errorCount: 0,
-        warningCount: 0,
-        fixableErrorCount: 0,
-        fixableWarningCount: 0
-    });
+    }
+    return stat;
 }
@@ -197,14 +205,21 @@
 function calculateStatsPerRun(results) {
-    return results.reduce((stat, result) => {
+    const stat = {
+        errorCount: 0,
+        fatalErrorCount: 0,
+        warningCount: 0,
+        fixableErrorCount: 0,
+        fixableWarningCount: 0
+    };
+
+    for (let i = 0; i < results.length; i++) {
+        const result = results[i];
+
         stat.errorCount += result.errorCount;
+        stat.fatalErrorCount += result.fatalErrorCount;
         stat.warningCount += result.warningCount;
         stat.fixableErrorCount += result.fixableErrorCount;
         stat.fixableWarningCount += result.fixableWarningCount;
-        return stat;
-    }, {
-        errorCount: 0,
-        warningCount: 0,
-        fixableErrorCount: 0,
-        fixableWarningCount: 0
-    });
+    }
+
+    return stat;
 }
@@ -272,2 +287,3 @@
         messages,
+        suppressedMessages: linter.getSuppressedMessages(),
         ...calculateStatsPerFile(messages)
@@ -292,3 +308,3 @@ };
  * @param {string} filePath File path of checked code
- * @param {string} baseDir  Absolute path of base directory
+ * @param {string} baseDir Absolute path of base directory
  * @returns {LintResult} Result with single warning
@@ -315,8 +331,12 @@ * @private
             {
+                ruleId: null,
                 fatal: false,
                 severity: 1,
-                message
+                message,
+                nodeType: null
             }
         ],
+        suppressedMessages: [],
         errorCount: 0,
+        fatalErrorCount: 0,
         warningCount: 1,
@@ -346,2 +366,19 @@ fixableErrorCount: 0,
 /**
+ * Checks whether a message's rule type should be fixed.
+ * @param {LintMessage} message The message to check.
+ * @param {ConfigArray[]} lastConfigArrays The list of config arrays that the last `executeOnFiles` or `executeOnText` used.
+ * @param {string[]} fixTypes An array of fix types to check.
+ * @returns {boolean} Whether the message should be fixed.
+ */
+function shouldMessageBeFixed(message, lastConfigArrays, fixTypes) {
+    if (!message.ruleId) {
+        return fixTypes.has("directive");
+    }
+
+    const rule = message.ruleId && getRule(message.ruleId, lastConfigArrays);
+
+    return Boolean(rule && rule.meta && fixTypes.has(rule.meta.type));
+}
+
+/**
  * Collect used deprecated rules.
@@ -356,5 +393,3 @@ * @param {ConfigArray[]} usedConfigArrays The config arrays which were used.
     /** @type {ExtractedConfig[]} */
-    const configs = [].concat(
-        ...usedConfigArrays.map(getUsedExtractedConfigs)
-    );
+    const configs = usedConfigArrays.flatMap(getUsedExtractedConfigs);
 
@@ -407,3 +442,3 @@ // Traverse rule configs.
  *
- * if cacheFile points to a file or looks like a file then in will just use that file
+ * if cacheFile points to a file or looks like a file then it will just use that file
  * @param {string} cacheFile The name of file to be used to store the cache
@@ -480,2 +515,3 @@ * @param {string} cwd Current working directory
  * @param {string} displayName The property name which is used in error message.
+ * @throws {Error} Requires array.
  * @returns {Record<string,boolean>} The boolean map.
@@ -544,2 +580,3 @@ */
  * @param {string} resolvedPath A path from the CWD
+ * @throws {Error} As thrown by `fs.statSync` or `fs.isDirectory`.
  * @returns {boolean} `true` if a directory exists
@@ -562,2 +599,5 @@ */
 
+/**
+ * Core CLI.
+ */
 class CLIEngine {
@@ -568,4 +608,6 @@
      * @param {CLIEngineOptions} providedOptions The options for this instance.
+     * @param {Object} [additionalData] Additional settings that are not CLIEngineOptions.
+     * @param {Record<string,Plugin>|null} [additionalData.preloadedPlugins] Preloaded plugins.
      */
-    constructor(providedOptions) {
+    constructor(providedOptions, { preloadedPlugins } = {}) {
         const options = Object.assign(
@@ -583,2 +625,9 @@ Object.create(null),
         const additionalPluginPool = new Map();
+
+        if (preloadedPlugins) {
+            for (const [id, plugin] of Object.entries(preloadedPlugins)) {
+                additionalPluginPool.set(id, plugin);
+            }
+        }
+
         const cacheFilePath = getCacheFile(
@@ -600,4 +649,4 @@ options.cacheLocation || options.cacheFile,
             loadRules,
-            eslintRecommendedPath: path.resolve(__dirname, "../../conf/eslint-recommended.js"),
-            eslintAllPath: path.resolve(__dirname, "../../conf/eslint-all.js")
+            getEslintRecommendedConfig: () => require("@eslint/js").configs.recommended,
+            getEslintAllConfig: () => require("@eslint/js").configs.all
         });
@@ -613,3 +662,3 @@ const fileEnumerator = new FileEnumerator({
         const lintResultCache =
-            options.cache ? new LintResultCache(cacheFilePath) : null;
+            options.cache ? new LintResultCache(cacheFilePath, options.cacheStrategy) : null;
         const linter = new Linter({ cwd: options.cwd });
@@ -647,8 +696,3 @@
 
-            options.fix = message => {
-                const rule = message.ruleId && getRule(message.ruleId, lastConfigArrays);
-                const matches = rule && rule.meta && fixTypes.has(rule.meta.type);
-
-                return matches && originalFix(message);
-            };
+            options.fix = message => shouldMessageBeFixed(message, lastConfigArrays, fixTypes) && originalFix(message);
         }
@@ -679,2 +723,3 @@ }
             const filteredMessages = result.messages.filter(isErrorMessage);
+            const filteredSuppressedMessages = result.suppressedMessages.filter(isErrorMessage);
 
@@ -685,2 +730,3 @@ if (filteredMessages.length > 0) {
                     messages: filteredMessages,
+                    suppressedMessages: filteredSuppressedMessages,
                     errorCount: filteredMessages.length,
@@ -708,23 +754,3 @@ warningCount: 0,
 
-
     /**
-     * Add a plugin by passing its configuration
-     * @param {string} name Name of the plugin.
-     * @param {Plugin} pluginObject Plugin configuration object.
-     * @returns {void}
-     */
-    addPlugin(name, pluginObject) {
-        const {
-            additionalPluginPool,
-            configArrayFactory,
-            lastConfigArrays
-        } = internalSlotsMap.get(this);
-
-        additionalPluginPool.set(name, pluginObject);
-        configArrayFactory.clearCache();
-        lastConfigArrays.length = 1;
-        lastConfigArrays[0] = configArrayFactory.getConfigArrayForFile();
-    }
-
-    /**
      * Resolves the patterns passed into executeOnFiles() into glob-based patterns
@@ -758,2 +784,3 @@ * for easier handling.
      * @param {string[]} patterns An array of file and directory names.
+     * @throws {Error} As may be thrown by `fs.unlinkSync`.
      * @returns {LintReport} The results for all files that were linted.
@@ -965,2 +992,3 @@ */
      * @param {string} filePath The path of the file to retrieve a config object for.
+     * @throws {Error} If filepath a directory path.
      * @returns {ConfigData} A configuration object for the file.
@@ -1014,3 +1042,4 @@ */
      *      custom formatter.
-     * @returns {(Function|null)} The formatter function or null if the `format` is not a string.
+     * @throws {any} As may be thrown by requiring of formatter
+     * @returns {(FormatterFunction|null)} The formatter function or null if the `format` is not a string.
      */
@@ -1035,3 +1064,3 @@ getFormatter(format) {
             // if there's a slash, then it's a file (TODO: this check seems dubious for scoped npm packages)
-            if (!namespace && normalizedFormatName.indexOf("/") > -1) {
+            if (!namespace && normalizedFormatName.includes("/")) {
                 formatterPath = path.resolve(cwd, normalizedFormatName);
@@ -1051,3 +1080,7 @@ } else {
             } catch (ex) {
-                ex.message = `There was a problem loading formatter: ${formatterPath}\nError: ${ex.message}`;
+                if (format === "table" || format === "codeframe") {
+                    ex.message = `The ${format} formatter is no longer part of core ESLint. Install it manually with \`npm install -D eslint-formatter-${format}\``;
+                } else {
+                    ex.message = `There was a problem loading formatter: ${formatterPath}\nError: ${ex.message}`;
+                }
                 throw ex;
@@ -1054,0 +1087,0 @@ }

lib/cli-engine/file-enumerator.js

@@ -41,3 +41,3 @@ /**
 const isGlob = require("is-glob");
-const { escapeRegExp } = require("lodash");
+const escapeRegExp = require("escape-string-regexp");
 const { Minimatch } = require("minimatch");
@@ -64,3 +64,3 @@
 // For VSCode intellisense
-/** @typedef {ReturnType<CascadingConfigArrayFactory["getConfigArrayForFile"]>} ConfigArray */
+/** @typedef {ReturnType<CascadingConfigArrayFactory.getConfigArrayForFile>} ConfigArray */
 
@@ -119,2 +119,3 @@ /**
  * @param {string} filePath The path to target file.
+ * @throws {Error} As may be thrown by `fs.statSync`.
  * @returns {fs.Stats|null} The stats.
@@ -127,3 +128,4 @@ * @private
     } catch (error) {
-        /* istanbul ignore next */
+
+        /* c8 ignore next */
         if (error.code !== "ENOENT") {
@@ -139,2 +141,3 @@ throw error;
  * @param {string} directoryPath The path to target directory.
+ * @throws {Error} As may be thrown by `fs.readdirSync`.
  * @returns {import("fs").Dirent[]} The filenames.
@@ -147,3 +150,4 @@ * @private
     } catch (error) {
-        /* istanbul ignore next */
+
+        /* c8 ignore next */
         if (error.code !== "ENOENT") {
@@ -182,3 +186,2 @@ throw error;
 
-    // eslint-disable-next-line jsdoc/require-description
     /**
@@ -200,3 +203,2 @@ * @param {string} pattern The glob pattern which was not found.
 
-    // eslint-disable-next-line jsdoc/require-description
     /**
@@ -226,4 +228,4 @@ * @param {string} pattern The glob pattern which was not found.
             cwd,
-            eslintRecommendedPath: path.resolve(__dirname, "../../conf/eslint-recommended.js"),
-            eslintAllPath: path.resolve(__dirname, "../../conf/eslint-all.js")
+            getEslintRecommendedConfig: () => require("@eslint/js").configs.recommended,
+            getEslintAllConfig: () => require("@eslint/js").configs.all
         }),
@@ -282,2 +284,3 @@ extensions = null,
      * @param {string|string[]} patternOrPatterns The glob patterns to iterate files.
+     * @throws {NoFilesFoundError|AllFilesIgnoredError} On an unmatched pattern.
      * @returns {IterableIterator<FileAndConfig>} The found files.
@@ -359,3 +362,3 @@ */
         if (globInputPaths && isGlobPattern(pattern)) {
-            return this._iterateFilesWithGlob(absolutePath, isDot);
+            return this._iterateFilesWithGlob(pattern, isDot);
         }
@@ -409,4 +412,6 @@
 
-        const directoryPath = path.resolve(getGlobParent(pattern));
-        const globPart = pattern.slice(directoryPath.length + 1);
+        const { cwd } = internalSlotsMap.get(this);
+        const directoryPath = path.resolve(cwd, getGlobParent(pattern));
+        const absolutePath = path.resolve(cwd, pattern);
+        const globPart = absolutePath.slice(directoryPath.length + 1);
 
@@ -418,3 +423,3 @@ /*
         const recursive = /\*\*|\/|\\/u.test(globPart);
-        const selector = new Minimatch(pattern, minimatchOpts);
+        const selector = new Minimatch(absolutePath, minimatchOpts);
 
@@ -449,5 +454,10 @@ debug(`recursive? ${recursive}`);
             const filePath = path.join(directoryPath, entry.name);
+            const fileInfo = entry.isSymbolicLink() ? statSafeSync(filePath) : entry;
 
+            if (!fileInfo) {
+                continue;
+            }
+
             // Check if the file is matched.
-            if (entry.isFile()) {
+            if (fileInfo.isFile()) {
                 if (!config) {
@@ -488,3 +498,3 @@ config = configArrayFactory.getConfigArrayForFile(
             // Dive into the sub directory.
-            } else if (options.recursive && entry.isDirectory()) {
+            } else if (options.recursive && fileInfo.isDirectory()) {
                 if (!config) {
@@ -491,0 +501,0 @@ config = configArrayFactory.getConfigArrayForFile(

lib/cli-engine/formatters/html.js

@@ -7,6 +7,2 @@ /**
 
-const lodash = require("lodash");
-const fs = require("fs");
-const path = require("path");
-
 //------------------------------------------------------------------------------
@@ -16,7 +12,174 @@ // Helpers
 
-const pageTemplate = lodash.template(fs.readFileSync(path.join(__dirname, "html-template-page.html"), "utf-8"));
-const messageTemplate = lodash.template(fs.readFileSync(path.join(__dirname, "html-template-message.html"), "utf-8"));
-const resultTemplate = lodash.template(fs.readFileSync(path.join(__dirname, "html-template-result.html"), "utf-8"));
+const encodeHTML = (function() {
+    const encodeHTMLRules = {
+        "&": "&",
+        "<": "&#60;",
+        ">": "&#62;",
+        '"': "&#34;",
+        "'": "&#39;"
+    };
+    const matchHTML = /[&<>"']/ug;
 
+    return function(code) {
+        return code
+            ? code.toString().replace(matchHTML, m => encodeHTMLRules[m] || m)
+            : "";
+    };
+}());
+
 /**
+ * Get the final HTML document.
+ * @param {Object} it data for the document.
+ * @returns {string} HTML document.
+ */
+function pageTemplate(it) {
+    const { reportColor, reportSummary, date, results } = it;
+
+    return `
+<!DOCTYPE html>
+<html>
+    <head>
+        <meta charset="UTF-8">
+        <title>ESLint Report</title>
+        <link rel="icon" type="image/png" sizes="any" href="data:image/png;base64,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">
+        <link rel="icon" type="image/svg+xml" href="data:image/svg+xml;base64,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">
+        <style>
+            body {
+                font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
+                font-size: 16px;
+                font-weight: normal;
+                margin: 0;
+                padding: 0;
+                color: #333;
+            }
+
+            #overview {
+                padding: 20px 30px;
+            }
+
+            td,
+            th {
+                padding: 5px 10px;
+            }
+
+            h1 {
+                margin: 0;
+            }
+
+            table {
+                margin: 30px;
+                width: calc(100% - 60px);
+                max-width: 1000px;
+                border-radius: 5px;
+                border: 1px solid #ddd;
+                border-spacing: 0;
+            }
+
+            th {
+                font-weight: 400;
+                font-size: medium;
+                text-align: left;
+                cursor: pointer;
+            }
+
+            td.clr-1,
+            td.clr-2,
+            th span {
+                font-weight: 700;
+            }
+
+            th span {
+                float: right;
+                margin-left: 20px;
+            }
+
+            th span::after {
+                content: "";
+                clear: both;
+                display: block;
+            }
+
+            tr:last-child td {
+                border-bottom: none;
+            }
+
+            tr td:first-child,
+            tr td:last-child {
+                color: #9da0a4;
+            }
+
+            #overview.bg-0,
+            tr.bg-0 th {
+                color: #468847;
+                background: #dff0d8;
+                border-bottom: 1px solid #d6e9c6;
+            }
+
+            #overview.bg-1,
+            tr.bg-1 th {
+                color: #f0ad4e;
+                background: #fcf8e3;
+                border-bottom: 1px solid #fbeed5;
+            }
+
+            #overview.bg-2,
+            tr.bg-2 th {
+                color: #b94a48;
+                background: #f2dede;
+                border-bottom: 1px solid #eed3d7;
+            }
+
+            td {
+                border-bottom: 1px solid #ddd;
+            }
+
+            td.clr-1 {
+                color: #f0ad4e;
+            }
+
+            td.clr-2 {
+                color: #b94a48;
+            }
+
+            td a {
+                color: #3a33d1;
+                text-decoration: none;
+            }
+
+            td a:hover {
+                color: #272296;
+                text-decoration: underline;
+            }
+        </style>
+    </head>
+    <body>
+        <div id="overview" class="bg-${reportColor}">
+            <h1>ESLint Report</h1>
+            <div>
+                <span>${reportSummary}</span> - Generated on ${date}
+            </div>
+        </div>
+        <table>
+            <tbody>
+                ${results}
+            </tbody>
+        </table>
+        <script type="text/javascript">
+            var groups = document.querySelectorAll("tr[data-group]");
+            for (i = 0; i < groups.length; i++) {
+                groups[i].addEventListener("click", function() {
+                    var inGroup = document.getElementsByClassName(this.getAttribute("data-group"));
+                    this.innerHTML = (this.innerHTML.indexOf("+") > -1) ? this.innerHTML.replace("+", "-") : this.innerHTML.replace("-", "+");
+                    for (var j = 0; j < inGroup.length; j++) {
+                        inGroup[j].style.display = (inGroup[j].style.display !== "none") ? "none" : "table-row";
+                    }
+                });
+            }
+        </script>
+    </body>
+</html>
+`.trimStart();
+}
+
+/**
  * Given a word and a count, append an s if count is not one.
@@ -64,2 +227,31 @@ * @param {string} word A word in its singular form.
 /**
+ * Get HTML (table row) describing a single message.
+ * @param {Object} it data for the message.
+ * @returns {string} HTML (table row) describing the message.
+ */
+function messageTemplate(it) {
+    const {
+        parentIndex,
+        lineNumber,
+        columnNumber,
+        severityNumber,
+        severityName,
+        message,
+        ruleUrl,
+        ruleId
+    } = it;
+
+    return `
+<tr style="display: none;" class="f-${parentIndex}">
+    <td>${lineNumber}:${columnNumber}</td>
+    <td class="clr-${severityNumber}">${severityName}</td>
+    <td>${encodeHTML(message)}</td>
+    <td>
+        <a href="${ruleUrl ? ruleUrl : ""}" target="_blank" rel="noopener noreferrer">${ruleId ? ruleId : ""}</a>
+    </td>
+</tr>
+`.trimStart();
+}
+
+/**
  * Get HTML (table rows) describing the messages.
@@ -78,3 +270,3 @@ * @param {Array} messages Messages.
      */
-    return lodash.map(messages, message => {
+    return messages.map(message => {
         const lineNumber = message.line || 0;
@@ -87,3 +279,5 @@ const columnNumber = message.column || 0;
 
-            ruleUrl = lodash.get(meta, "docs.url", null);
+            if (meta && meta.docs && meta.docs.url) {
+                ruleUrl = meta.docs.url;
+            }
         }
@@ -104,4 +298,22 @@
 
-// eslint-disable-next-line jsdoc/require-description
 /**
+ * Get HTML (table row) describing the result for a single file.
+ * @param {Object} it data for the file.
+ * @returns {string} HTML (table row) describing the result for the file.
+ */
+function resultTemplate(it) {
+    const { color, index, filePath, summary } = it;
+
+    return `
+<tr class="bg-${color}" data-group="f-${index}">
+    <th colspan="4">
+        [+] ${encodeHTML(filePath)}
+        <span>${encodeHTML(summary)}</span>
+    </th>
+</tr>
+`.trimStart();
+}
+
+/**
+ * Render the results.
  * @param {Array} results Test results.
@@ -112,3 +324,3 @@ * @param {Object} rulesMeta Dictionary containing metadata for each rule executed by the analysis.
 function renderResults(results, rulesMeta) {
-    return lodash.map(results, (result, index) => resultTemplate({
+    return results.map((result, index) => resultTemplate({
         index,
@@ -118,3 +330,2 @@ color: renderColor(result.errorCount, result.warningCount),
         summary: renderSummary(result.errorCount, result.warningCount)
-
     }) + renderMessages(result.messages, index, rulesMeta)).join("\n");
@@ -121,0 +332,0 @@ }

lib/cli-engine/formatters/tap.js

@@ -34,3 +34,3 @@ /**
 
-    output += prefix + yaml.safeDump(diagnostic).split("\n").join(`\n${prefix}`);
+    output += prefix + yaml.dump(diagnostic).split("\n").join(`\n${prefix}`);
     output += "...\n";
@@ -37,0 +37,0 @@ return output;

lib/cli-engine/hash.js

@@ -24,4 +24,4 @@ /**
  * hash the given string
- * @param  {string} str the string to hash
- * @returns {string}    the hash
+ * @param {string} str the string to hash
+ * @returns {string} the hash
  */
@@ -28,0 +28,0 @@ function hash(str) {

lib/cli-engine/lint-result-cache.js

@@ -18,2 +18,4 @@ /**
 
+const debug = require("debug")("eslint:lint-result-cache");
+
 //-----------------------------------------------------------------------------
@@ -26,3 +28,19 @@ // Helpers
 
+const validCacheStrategies = ["metadata", "content"];
+const invalidCacheStrategyErrorMessage = `Cache strategy must be one of: ${validCacheStrategies
+    .map(strategy => `"${strategy}"`)
+    .join(", ")}`;
+
 /**
+ * Tests whether a provided cacheStrategy is valid
+ * @param {string} cacheStrategy The cache strategy to use
+ * @returns {boolean} true if `cacheStrategy` is one of `validCacheStrategies`; false otherwise
+ */
+function isValidCacheStrategy(cacheStrategy) {
+    return (
+        validCacheStrategies.includes(cacheStrategy)
+    );
+}
+
+/**
  * Calculates the hash of the config
@@ -54,8 +72,26 @@ * @param {ConfigArray} config The config.
      * @param {string} cacheFileLocation The cache file location.
-     *   configuration lookup by file path).
+     * @param {"metadata" | "content"} cacheStrategy The cache strategy to use.
      */
-    constructor(cacheFileLocation) {
+    constructor(cacheFileLocation, cacheStrategy) {
         assert(cacheFileLocation, "Cache file location is required");
+        assert(cacheStrategy, "Cache strategy is required");
+        assert(
+            isValidCacheStrategy(cacheStrategy),
+            invalidCacheStrategyErrorMessage
+        );
 
-        this.fileEntryCache = fileEntryCache.create(cacheFileLocation);
+        debug(`Caching results to ${cacheFileLocation}`);
+
+        const useChecksum = cacheStrategy === "content";
+
+        debug(
+            `Using "${cacheStrategy}" strategy to detect changes`
+        );
+
+        this.fileEntryCache = fileEntryCache.create(
+            cacheFileLocation,
+            void 0,
+            useChecksum
+        );
+        this.cacheFileLocation = cacheFileLocation;
     }
@@ -82,13 +118,24 @@
          */
-
         const fileDescriptor = this.fileEntryCache.getFileDescriptor(filePath);
         const hashOfConfig = hashOfConfigFor(config);
-        const changed = fileDescriptor.changed || fileDescriptor.meta.hashOfConfig !== hashOfConfig;
+        const changed =
+            fileDescriptor.changed ||
+            fileDescriptor.meta.hashOfConfig !== hashOfConfig;
 
-        if (fileDescriptor.notFound || changed) {
+        if (fileDescriptor.notFound) {
+            debug(`File not found on the file system: ${filePath}`);
             return null;
         }
 
+        if (changed) {
+            debug(`Cache entry not found or no longer valid: ${filePath}`);
+            return null;
+        }
+
         // If source is present but null, need to reread the file from the filesystem.
-        if (fileDescriptor.meta.results && fileDescriptor.meta.results.source === null) {
+        if (
+            fileDescriptor.meta.results &&
+            fileDescriptor.meta.results.source === null
+        ) {
+            debug(`Rereading cached result source from filesystem: ${filePath}`);
             fileDescriptor.meta.results.source = fs.readFileSync(filePath, "utf-8");
@@ -119,2 +166,3 @@ }
         if (fileDescriptor && !fileDescriptor.notFound) {
+            debug(`Updating cached result: ${filePath}`);
 
@@ -143,2 +191,3 @@ // Serialize the result, except that we want to remove the file source if present.
     reconcile() {
+        debug(`Persisting cached results: ${this.cacheFileLocation}`);
         this.fileEntryCache.reconcile();
@@ -145,0 +194,0 @@ }

lib/cli-engine/xml-escape.js

@@ -18,3 +18,3 @@ /**
 module.exports = function(s) {
-    return (`${s}`).replace(/[<>&"'\x00-\x1F\x7F\u0080-\uFFFF]/gu, c => { // eslint-disable-line no-control-regex
+    return (`${s}`).replace(/[<>&"'\x00-\x1F\x7F\u0080-\uFFFF]/gu, c => { // eslint-disable-line no-control-regex -- Converting controls to entities
         switch (c) {
@@ -21,0 +21,0 @@ case "<":

lib/cli.js

@@ -9,3 +9,3 @@ /**
 /*
- * The CLI object should *not* call process.exit() directly. It should only return
+ * NOTE: The CLI object should *not* call process.exit() directly. It should only return
  * exit codes. This allows other programs to use the CLI object and still control
@@ -23,5 +23,8 @@ * when the program exits.
     { ESLint } = require("./eslint"),
-    CLIOptions = require("./options"),
+    { FlatESLint, shouldUseFlatConfig } = require("./eslint/flat-eslint"),
+    createCLIOptions = require("./options"),
     log = require("./shared/logging"),
     RuntimeInfo = require("./shared/runtime-info");
+const { Legacy: { naming } } = require("@eslint/eslintrc");
+const { ModuleImporter } = require("@humanwhocodes/module-importer");
 
@@ -37,2 +40,4 @@ const debug = require("debug")("eslint:cli");
 /** @typedef {import("./eslint/eslint").LintResult} LintResult */
+/** @typedef {import("./options").ParsedCLIOptions} ParsedCLIOptions */
+/** @typedef {import("./shared/types").ResultsMeta} ResultsMeta */
 
@@ -59,12 +64,16 @@ //------------------------------------------------------------------------------
 /**
- * Translates the CLI options into the options expected by the CLIEngine.
- * @param {Object} cliOptions The CLI options to translate.
- * @returns {ESLintOptions} The options object for the CLIEngine.
+ * Translates the CLI options into the options expected by the ESLint constructor.
+ * @param {ParsedCLIOptions} cliOptions The CLI options to translate.
+ * @param {"flat"|"eslintrc"} [configType="eslintrc"] The format of the
+ *      config to generate.
+ * @returns {Promise<ESLintOptions>} The options object for the ESLint constructor.
  * @private
  */
-function translateOptions({
+async function translateOptions({
     cache,
     cacheFile,
     cacheLocation,
+    cacheStrategy,
     config,
+    configLookup,
     env,
@@ -90,14 +99,56 @@ errorOnUnmatchedPattern,
     rulesdir
-}) {
-    return {
-        allowInlineConfig: inlineConfig,
-        cache,
-        cacheLocation: cacheLocation || cacheFile,
-        errorOnUnmatchedPattern,
-        extensions: ext,
-        fix: (fix || fixDryRun) && (quiet ? quietFixPredicate : true),
-        fixTypes: fixType,
-        ignore,
-        ignorePath,
-        overrideConfig: {
+}, configType) {
+
+    let overrideConfig, overrideConfigFile;
+    const importer = new ModuleImporter();
+
+    if (configType === "flat") {
+        overrideConfigFile = (typeof config === "string") ? config : !configLookup;
+        if (overrideConfigFile === false) {
+            overrideConfigFile = void 0;
+        }
+
+        let globals = {};
+
+        if (global) {
+            globals = global.reduce((obj, name) => {
+                if (name.endsWith(":true")) {
+                    obj[name.slice(0, -5)] = "writable";
+                } else {
+                    obj[name] = "readonly";
+                }
+                return obj;
+            }, globals);
+        }
+
+        overrideConfig = [{
+            languageOptions: {
+                globals,
+                parserOptions: parserOptions || {}
+            },
+            rules: rule ? rule : {}
+        }];
+
+        if (parser) {
+            overrideConfig[0].languageOptions.parser = await importer.import(parser);
+        }
+
+        if (plugin) {
+            const plugins = {};
+
+            for (const pluginName of plugin) {
+
+                const shortName = naming.getShorthandName(pluginName, "eslint-plugin");
+                const longName = naming.normalizePackageName(pluginName, "eslint-plugin");
+
+                plugins[shortName] = await importer.import(longName);
+            }
+
+            overrideConfig[0].plugins = plugins;
+        }
+
+    } else {
+        overrideConfigFile = config;
+
+        overrideConfig = {
             env: env && env.reduce((obj, name) => {
@@ -120,9 +171,30 @@ obj[name] = true;
             rules: rule
-        },
-        overrideConfigFile: config,
-        reportUnusedDisableDirectives: reportUnusedDisableDirectives ? "error" : void 0,
-        resolvePluginsRelativeTo,
-        rulePaths: rulesdir,
-        useEslintrc: eslintrc
+        };
+    }
+
+    const options = {
+        allowInlineConfig: inlineConfig,
+        cache,
+        cacheLocation: cacheLocation || cacheFile,
+        cacheStrategy,
+        errorOnUnmatchedPattern,
+        fix: (fix || fixDryRun) && (quiet ? quietFixPredicate : true),
+        fixTypes: fixType,
+        ignore,
+        overrideConfig,
+        overrideConfigFile,
+        reportUnusedDisableDirectives: reportUnusedDisableDirectives ? "error" : void 0
     };
+
+    if (configType === "flat") {
+        options.ignorePatterns = ignorePattern;
+    } else {
+        options.resolvePluginsRelativeTo = resolvePluginsRelativeTo;
+        options.rulePaths = rulesdir;
+        options.useEslintrc = eslintrc;
+        options.extensions = ext;
+        options.ignorePath = ignorePath;
+    }
+
+    return options;
 }
@@ -133,6 +205,7 @@
  * @param {LintResult[]} results The lint results.
- * @returns {{errorCount:number;warningCount:number}} The number of error messages.
+ * @returns {{errorCount:number;fatalErrorCount:number,warningCount:number}} The number of error messages.
  */
 function countErrors(results) {
     let errorCount = 0;
+    let fatalErrorCount = 0;
     let warningCount = 0;
@@ -142,6 +215,7 @@
         errorCount += result.errorCount;
+        fatalErrorCount += result.fatalErrorCount;
         warningCount += result.warningCount;
     }
 
-    return { errorCount, warningCount };
+    return { errorCount, fatalErrorCount, warningCount };
 }
@@ -171,6 +245,7 @@
  * @param {string} outputFile The path for the output file.
+ * @param {ResultsMeta} resultsMeta Warning count and max threshold.
  * @returns {Promise<boolean>} True if the printing succeeds, false if not.
  * @private
  */
-async function printResults(engine, results, format, outputFile) {
+async function printResults(engine, results, format, outputFile, resultsMeta) {
     let formatter;
@@ -185,3 +260,3 @@
 
-    const output = formatter.format(results);
+    const output = await formatter.format(results, resultsMeta);
 
@@ -226,8 +301,24 @@ if (output) {
      * @param {string} [text] The text to lint (used for TTY).
+     * @param {boolean} [allowFlatConfig] Whether or not to allow flat config.
      * @returns {Promise<number>} The exit code for the operation.
      */
-    async execute(args, text) {
+    async execute(args, text, allowFlatConfig) {
         if (Array.isArray(args)) {
             debug("CLI args: %o", args.slice(2));
         }
+
+        /*
+         * Before doing anything, we need to see if we are using a
+         * flat config file. If so, then we need to change the way command
+         * line args are parsed. This is temporary, and when we fully
+         * switch to flat config we can remove this logic.
+         */
+
+        const usingFlatConfig = allowFlatConfig && await shouldUseFlatConfig();
+
+        debug("Using flat config?", usingFlatConfig);
+
+        const CLIOptions = createCLIOptions(usingFlatConfig);
+
+        /** @type {ParsedCLIOptions} */
         let options;
@@ -238,2 +329,3 @@
         } catch (error) {
+            debug("Error parsing CLI options:", error.message);
             log.error(error.message);
@@ -259,2 +351,3 @@ return 2;
             } catch (err) {
+                debug("Error retrieving environment info");
                 log.error(err.message);
@@ -275,3 +368,5 @@ return 2;
 
-            const engine = new ESLint(translateOptions(options));
+            const engine = usingFlatConfig
+                ? new FlatESLint(await translateOptions(options, "flat"))
+                : new ESLint(await translateOptions(options));
             const fileConfig =
@@ -299,3 +394,5 @@ await engine.calculateConfigForFile(options.printConfig);
 
-        const engine = new ESLint(translateOptions(options));
+        const ActiveESLint = usingFlatConfig ? FlatESLint : ESLint;
+
+        const engine = new ActiveESLint(await translateOptions(options, usingFlatConfig ? "flat" : "eslintrc"));
         let results;
@@ -314,16 +411,30 @@
             debug("Fix mode enabled - applying fixes");
-            await ESLint.outputFixes(results);
+            await ActiveESLint.outputFixes(results);
         }
 
+        let resultsToPrint = results;
+
         if (options.quiet) {
             debug("Quiet mode enabled - filtering out warnings");
-            results = ESLint.getErrorResults(results);
+            resultsToPrint = ActiveESLint.getErrorResults(resultsToPrint);
         }
 
-        if (await printResults(engine, results, options.format, options.outputFile)) {
-            const { errorCount, warningCount } = countErrors(results);
-            const tooManyWarnings =
-                options.maxWarnings >= 0 && warningCount > options.maxWarnings;
+        const resultCounts = countErrors(results);
+        const tooManyWarnings = options.maxWarnings >= 0 && resultCounts.warningCount > options.maxWarnings;
+        const resultsMeta = tooManyWarnings
+            ? {
+                maxWarningsExceeded: {
+                    maxWarnings: options.maxWarnings,
+                    foundWarnings: resultCounts.warningCount
+                }
+            }
+            : {};
 
-            if (!errorCount && tooManyWarnings) {
+        if (await printResults(engine, resultsToPrint, options.format, options.outputFile, resultsMeta)) {
+
+            // Errors and warnings from the original unfiltered results should determine the exit code
+            const shouldExitForFatalErrors =
+                options.exitOnFatalError && resultCounts.fatalErrorCount > 0;
+
+            if (!resultCounts.errorCount && tooManyWarnings) {
                 log.error(
@@ -335,3 +446,7 @@ "ESLint found too many warnings (maximum: %s).",
 
-            return (errorCount || tooManyWarnings) ? 1 : 0;
+            if (shouldExitForFatalErrors) {
+                return 2;
+            }
+
+            return (resultCounts.errorCount || tooManyWarnings) ? 1 : 0;
         }
@@ -338,0 +453,0 @@

lib/eslint/eslint.js

@@ -35,7 +35,15 @@ /**
 /** @typedef {import("../shared/types").LintMessage} LintMessage */
+/** @typedef {import("../shared/types").SuppressedLintMessage} SuppressedLintMessage */
 /** @typedef {import("../shared/types").Plugin} Plugin */
 /** @typedef {import("../shared/types").Rule} Rule */
-/** @typedef {import("./load-formatter").Formatter} Formatter */
+/** @typedef {import("../shared/types").LintResult} LintResult */
+/** @typedef {import("../shared/types").ResultsMeta} ResultsMeta */
 
 /**
+ * The main formatter object.
+ * @typedef LoadedFormatter
+ * @property {(results: LintResult[], resultsMeta: ResultsMeta) => string | Promise<string>} format format function.
+ */
+
+/**
  * The options with which to configure the ESLint instance.
@@ -47,2 +55,3 @@ * @typedef {Object} ESLintOptions
  * @property {string} [cacheLocation] The cache file to use instead of .eslintcache.
+ * @property {"metadata" | "content"} [cacheStrategy] The strategy used to detect changed files.
  * @property {string} [cwd] The value to use for the current working directory.
@@ -58,3 +67,3 @@ * @property {boolean} [errorOnUnmatchedPattern] If `false` then `ESLint#lintFiles()` doesn't throw even if no target files found. Defaults to `true`.
  * @property {string} [overrideConfigFile] The configuration file to use.
- * @property {Record<string,Plugin>} [plugins] An array of plugin implementations.
+ * @property {Record<string,Plugin>|null} [plugins] Preloaded plugins. This is a map-like object, keys are plugin IDs and each value is implementation.
  * @property {"error" | "warn" | "off"} [reportUnusedDisableDirectives] the severity to report unused eslint-disable directives.
@@ -74,16 +83,2 @@ * @property {string} [resolvePluginsRelativeTo] The folder where plugins should be resolved from, defaulting to the CWD.
 /**
- * A linting result.
- * @typedef {Object} LintResult
- * @property {string} filePath The path to the file that was linted.
- * @property {LintMessage[]} messages All of the messages for the result.
- * @property {number} errorCount Number of errors for the result.
- * @property {number} warningCount Number of warnings for the result.
- * @property {number} fixableErrorCount Number of fixable errors for the result.
- * @property {number} fixableWarningCount Number of fixable warnings for the result.
- * @property {string} [source] The source code of the file that was linted.
- * @property {string} [output] The source code of the file that was linted, with as many fixes applied as possible.
- * @property {DeprecatedRuleInfo[]} usedDeprecatedRules The list of used deprecated rules.
- */
-
-/**
  * Private members for the `ESLint` instance.
@@ -117,5 +112,5 @@ * @typedef {Object} ESLintPrivateMembers
 /**
- * Check if a given value is an array of non-empty stringss or not.
+ * Check if a given value is an array of non-empty strings or not.
  * @param {any} x The value to check.
- * @returns {boolean} `true` if `x` is an array of non-empty stringss.
+ * @returns {boolean} `true` if `x` is an array of non-empty strings.
  */
@@ -132,3 +127,3 @@ function isArrayOfNonEmptyString(x) {
 function isFixType(x) {
-    return x === "problem" || x === "suggestion" || x === "layout";
+    return x === "directive" || x === "problem" || x === "suggestion" || x === "layout";
 }
@@ -159,2 +154,3 @@
  * @param {ESLintOptions} options The options to process.
+ * @throws {ESLintInvalidOptionsError} If of any of a variety of type errors.
  * @returns {ESLintOptions} The normalized options.
@@ -167,2 +163,3 @@ */
     cacheLocation = ".eslintcache",
+    cacheStrategy = "metadata",
     cwd = process.cwd(),
@@ -227,2 +224,8 @@ errorOnUnmatchedPattern = true,
     }
+    if (
+        cacheStrategy !== "metadata" &&
+        cacheStrategy !== "content"
+    ) {
+        errors.push("'cacheStrategy' must be any of \"metadata\", \"content\".");
+    }
     if (!isNonEmptyString(cwd) || !path.isAbsolute(cwd)) {
@@ -241,3 +244,3 @@ errors.push("'cwd' must be an absolute path.");
     if (fixTypes !== null && !isFixTypeArray(fixTypes)) {
-        errors.push("'fixTypes' must be an array of any of \"problem\", \"suggestion\", and \"layout\".");
+        errors.push("'fixTypes' must be an array of any of \"directive\", \"problem\", \"suggestion\", and \"layout\".");
     }
@@ -297,4 +300,5 @@ if (typeof globInputPaths !== "boolean") {
         cacheLocation,
+        cacheStrategy,
         configFile: overrideConfigFile,
-        cwd,
+        cwd: path.normalize(cwd),
         errorOnUnmatchedPattern,
@@ -426,2 +430,5 @@ extensions,
 
+/**
+ * Main API.
+ */
 class ESLint {
@@ -435,5 +442,4 @@
         const processedOptions = processOptions(options);
-        const cliEngine = new CLIEngine(processedOptions);
+        const cliEngine = new CLIEngine(processedOptions, { preloadedPlugins: options.plugins });
         const {
-            additionalPluginPool,
             configArrayFactory,
@@ -445,14 +451,2 @@ lastConfigArrays
         /*
-         * Address `plugins` to add plugin implementations.
-         * Operate the `additionalPluginPool` internal slot directly to avoid
-         * using `addPlugin(id, plugin)` method that resets cache everytime.
-         */
-        if (options.plugins) {
-            for (const [id, plugin] of Object.entries(options.plugins)) {
-                additionalPluginPool.set(id, plugin);
-                updated = true;
-            }
-        }
-
-        /*
          * Address `overrideConfig` to set override config.
@@ -523,2 +517,38 @@ * Operate the `configArrayFactory` internal slot directly because this
     /**
+     * Returns meta objects for each rule represented in the lint results.
+     * @param {LintResult[]} results The results to fetch rules meta for.
+     * @returns {Object} A mapping of ruleIds to rule meta objects.
+     */
+    getRulesMetaForResults(results) {
+
+        const resultRuleIds = new Set();
+
+        // first gather all ruleIds from all results
+
+        for (const result of results) {
+            for (const { ruleId } of result.messages) {
+                resultRuleIds.add(ruleId);
+            }
+            for (const { ruleId } of result.suppressedMessages) {
+                resultRuleIds.add(ruleId);
+            }
+        }
+
+        // create a map of all rules in the results
+
+        const { cliEngine } = privateMembersMap.get(this);
+        const rules = cliEngine.getRules();
+        const resultRules = new Map();
+
+        for (const [ruleId, rule] of rules) {
+            if (resultRuleIds.has(ruleId)) {
+                resultRules.set(ruleId, rule);
+            }
+        }
+
+        return createRulesMeta(resultRules);
+
+    }
+
+    /**
      * Executes the current configuration on an array of file and directory names.
@@ -561,5 +591,8 @@ * @param {string[]} patterns An array of file and directory names.
 
-        for (const key of Object.keys(unknownOptions)) {
-            throw new Error(`'options' must not include the unknown option '${key}'`);
+        const unknownOptionKeys = Object.keys(unknownOptions);
+
+        if (unknownOptionKeys.length > 0) {
+            throw new Error(`'options' must not include the unknown option(s): ${unknownOptionKeys.join(", ")}`);
         }
+
         if (filePath !== void 0 && !isNonEmptyString(filePath)) {
@@ -586,3 +619,3 @@ throw new Error("'options.filePath' must be a non-empty string or undefined");
      * - A builtin formatter name ... Load the builtin formatter.
-     * - A thirdparty formatter name:
+     * - A third-party formatter name:
      *   - `foo` → `eslint-formatter-foo`
@@ -592,3 +625,3 @@ *   - `@foo` → `@foo/eslint-formatter`
      * - A file path ... Load the file.
-     * @returns {Promise<Formatter>} A promise resolving to the formatter object.
+     * @returns {Promise<LoadedFormatter>} A promise resolving to the formatter object.
      * This promise will be rejected if the given formatter was not found or not
@@ -602,3 +635,3 @@ * a function.
 
-        const { cliEngine } = privateMembersMap.get(this);
+        const { cliEngine, options } = privateMembersMap.get(this);
         const formatter = cliEngine.getFormatter(name);
@@ -614,6 +647,7 @@
              * The main formatter method.
-             * @param {LintResults[]} results The lint results to format.
-             * @returns {string} The formatted lint results.
+             * @param {LintResult[]} results The lint results to format.
+             * @param {ResultsMeta} resultsMeta Warning count and max threshold.
+             * @returns {string | Promise<string>} The formatted lint results.
              */
-            format(results) {
+            format(results, resultsMeta) {
                 let rulesMeta = null;
@@ -624,2 +658,6 @@
                 return formatter(results, {
+                    ...resultsMeta,
+                    get cwd() {
+                        return options.cwd;
+                    },
                     get rulesMeta() {
@@ -626,0 +664,0 @@ if (!rulesMeta) {

lib/eslint/index.js

 "use strict";
 
 const { ESLint } = require("./eslint");
+const { FlatESLint } = require("./flat-eslint");
 
 module.exports = {
-    ESLint
+    ESLint,
+    FlatESLint
 };

lib/linter/apply-disable-directives.js

@@ -8,4 +8,14 @@ /**
 
-const lodash = require("lodash");
+//------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
 
+/** @typedef {import("../shared/types").LintMessage} LintMessage */
+
+//------------------------------------------------------------------------------
+// Module Definition
+//------------------------------------------------------------------------------
+
+const escapeRegExp = require("escape-string-regexp");
+
 /**
@@ -23,2 +33,173 @@ * Compares the locations of two objects in a source file
 /**
+ * Groups a set of directives into sub-arrays by their parent comment.
+ * @param {Directive[]} directives Unused directives to be removed.
+ * @returns {Directive[][]} Directives grouped by their parent comment.
+ */
+function groupByParentComment(directives) {
+    const groups = new Map();
+
+    for (const directive of directives) {
+        const { unprocessedDirective: { parentComment } } = directive;
+
+        if (groups.has(parentComment)) {
+            groups.get(parentComment).push(directive);
+        } else {
+            groups.set(parentComment, [directive]);
+        }
+    }
+
+    return [...groups.values()];
+}
+
+/**
+ * Creates removal details for a set of directives within the same comment.
+ * @param {Directive[]} directives Unused directives to be removed.
+ * @param {Token} commentToken The backing Comment token.
+ * @returns {{ description, fix, unprocessedDirective }[]} Details for later creation of output Problems.
+ */
+function createIndividualDirectivesRemoval(directives, commentToken) {
+
+    /*
+     * `commentToken.value` starts right after `//` or `/*`.
+     * All calculated offsets will be relative to this index.
+     */
+    const commentValueStart = commentToken.range[0] + "//".length;
+
+    // Find where the list of rules starts. `\S+` matches with the directive name (e.g. `eslint-disable-line`)
+    const listStartOffset = /^\s*\S+\s+/u.exec(commentToken.value)[0].length;
+
+    /*
+     * Get the list text without any surrounding whitespace. In order to preserve the original
+     * formatting, we don't want to change that whitespace.
+     *
+     *     // eslint-disable-line rule-one , rule-two , rule-three -- comment
+     *                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+     */
+    const listText = commentToken.value
+        .slice(listStartOffset) // remove directive name and all whitespace before the list
+        .split(/\s-{2,}\s/u)[0] // remove `-- comment`, if it exists
+        .trimEnd(); // remove all whitespace after the list
+
+    /*
+     * We can assume that `listText` contains multiple elements.
+     * Otherwise, this function wouldn't be called - if there is
+     * only one rule in the list, then the whole comment must be removed.
+     */
+
+    return directives.map(directive => {
+        const { ruleId } = directive;
+
+        const regex = new RegExp(String.raw`(?:^|\s*,\s*)${escapeRegExp(ruleId)}(?:\s*,\s*|$)`, "u");
+        const match = regex.exec(listText);
+        const matchedText = match[0];
+        const matchStartOffset = listStartOffset + match.index;
+        const matchEndOffset = matchStartOffset + matchedText.length;
+
+        const firstIndexOfComma = matchedText.indexOf(",");
+        const lastIndexOfComma = matchedText.lastIndexOf(",");
+
+        let removalStartOffset, removalEndOffset;
+
+        if (firstIndexOfComma !== lastIndexOfComma) {
+
+            /*
+             * Since there are two commas, this must one of the elements in the middle of the list.
+             * Matched range starts where the previous rule name ends, and ends where the next rule name starts.
+             *
+             *     // eslint-disable-line rule-one , rule-two , rule-three -- comment
+             *                                    ^^^^^^^^^^^^^^
+             *
+             * We want to remove only the content between the two commas, and also one of the commas.
+             *
+             *     // eslint-disable-line rule-one , rule-two , rule-three -- comment
+             *                                     ^^^^^^^^^^^
+             */
+            removalStartOffset = matchStartOffset + firstIndexOfComma;
+            removalEndOffset = matchStartOffset + lastIndexOfComma;
+
+        } else {
+
+            /*
+             * This is either the first element or the last element.
+             *
+             * If this is the first element, matched range starts where the first rule name starts
+             * and ends where the second rule name starts. This is exactly the range we want
+             * to remove so that the second rule name will start where the first one was starting
+             * and thus preserve the original formatting.
+             *
+             *     // eslint-disable-line rule-one , rule-two , rule-three -- comment
+             *                            ^^^^^^^^^^^
+             *
+             * Similarly, if this is the last element, we've already matched the range we want to
+             * remove. The previous rule name will end where the last one was ending, relative
+             * to the content on the right side.
+             *
+             *     // eslint-disable-line rule-one , rule-two , rule-three -- comment
+             *                                               ^^^^^^^^^^^^^
+             */
+            removalStartOffset = matchStartOffset;
+            removalEndOffset = matchEndOffset;
+        }
+
+        return {
+            description: `'${ruleId}'`,
+            fix: {
+                range: [
+                    commentValueStart + removalStartOffset,
+                    commentValueStart + removalEndOffset
+                ],
+                text: ""
+            },
+            unprocessedDirective: directive.unprocessedDirective
+        };
+    });
+}
+
+/**
+ * Creates a description of deleting an entire unused disable comment.
+ * @param {Directive[]} directives Unused directives to be removed.
+ * @param {Token} commentToken The backing Comment token.
+ * @returns {{ description, fix, unprocessedDirective }} Details for later creation of an output Problem.
+ */
+function createCommentRemoval(directives, commentToken) {
+    const { range } = commentToken;
+    const ruleIds = directives.filter(directive => directive.ruleId).map(directive => `'${directive.ruleId}'`);
+
+    return {
+        description: ruleIds.length <= 2
+            ? ruleIds.join(" or ")
+            : `${ruleIds.slice(0, ruleIds.length - 1).join(", ")}, or ${ruleIds[ruleIds.length - 1]}`,
+        fix: {
+            range,
+            text: " "
+        },
+        unprocessedDirective: directives[0].unprocessedDirective
+    };
+}
+
+/**
+ * Parses details from directives to create output Problems.
+ * @param {Directive[]} allDirectives Unused directives to be removed.
+ * @returns {{ description, fix, unprocessedDirective }[]} Details for later creation of output Problems.
+ */
+function processUnusedDisableDirectives(allDirectives) {
+    const directiveGroups = groupByParentComment(allDirectives);
+
+    return directiveGroups.flatMap(
+        directives => {
+            const { parentComment } = directives[0].unprocessedDirective;
+            const remainingRuleIds = new Set(parentComment.ruleIds);
+
+            for (const directive of directives) {
+                remainingRuleIds.delete(directive.ruleId);
+            }
+
+            return remainingRuleIds.size
+                ? createIndividualDirectivesRemoval(directives, parentComment.commentToken)
+                : [createCommentRemoval(directives, parentComment.commentToken)];
+        }
+    );
+}
+
+/**
  * This is the same as the exported function, except that it
@@ -30,16 +211,13 @@ * doesn't handle disable-line and disable-next-line directives, and it always reports unused
  * (this function always reports unused disable directives).
- * @returns {{problems: Problem[], unusedDisableDirectives: Problem[]}} An object with a list
- * of filtered problems and unused eslint-disable directives
+ * @returns {{problems: LintMessage[], unusedDisableDirectives: LintMessage[]}} An object with a list
+ * of problems (including suppressed ones) and unused eslint-disable directives
  */
 function applyDirectives(options) {
     const problems = [];
-    let nextDirectiveIndex = 0;
-    let currentGlobalDisableDirective = null;
-    const disabledRuleMap = new Map();
-
-    // enabledRules is only used when there is a current global disable directive.
-    const enabledRules = new Set();
     const usedDisableDirectives = new Set();
 
     for (const problem of options.problems) {
+        let disableDirectivesForProblem = [];
+        let nextDirectiveIndex = 0;
+
         while (
@@ -51,54 +229,56 @@ nextDirectiveIndex < options.directives.length &&
 
-            switch (directive.type) {
-                case "disable":
-                    if (directive.ruleId === null) {
-                        currentGlobalDisableDirective = directive;
-                        disabledRuleMap.clear();
-                        enabledRules.clear();
-                    } else if (currentGlobalDisableDirective) {
-                        enabledRules.delete(directive.ruleId);
-                        disabledRuleMap.set(directive.ruleId, directive);
-                    } else {
-                        disabledRuleMap.set(directive.ruleId, directive);
-                    }
-                    break;
+            if (directive.ruleId === null || directive.ruleId === problem.ruleId) {
+                switch (directive.type) {
+                    case "disable":
+                        disableDirectivesForProblem.push(directive);
+                        break;
 
-                case "enable":
-                    if (directive.ruleId === null) {
-                        currentGlobalDisableDirective = null;
-                        disabledRuleMap.clear();
-                    } else if (currentGlobalDisableDirective) {
-                        enabledRules.add(directive.ruleId);
-                        disabledRuleMap.delete(directive.ruleId);
-                    } else {
-                        disabledRuleMap.delete(directive.ruleId);
-                    }
-                    break;
+                    case "enable":
+                        disableDirectivesForProblem = [];
+                        break;
 
-                // no default
+                    // no default
+                }
             }
         }
 
-        if (disabledRuleMap.has(problem.ruleId)) {
-            usedDisableDirectives.add(disabledRuleMap.get(problem.ruleId));
-        } else if (currentGlobalDisableDirective && !enabledRules.has(problem.ruleId)) {
-            usedDisableDirectives.add(currentGlobalDisableDirective);
-        } else {
-            problems.push(problem);
+        if (disableDirectivesForProblem.length > 0) {
+            const suppressions = disableDirectivesForProblem.map(directive => ({
+                kind: "directive",
+                justification: directive.unprocessedDirective.justification
+            }));
+
+            if (problem.suppressions) {
+                problem.suppressions = problem.suppressions.concat(suppressions);
+            } else {
+                problem.suppressions = suppressions;
+                usedDisableDirectives.add(disableDirectivesForProblem[disableDirectivesForProblem.length - 1]);
+            }
         }
+
+        problems.push(problem);
     }
 
-    const unusedDisableDirectives = options.directives
-        .filter(directive => directive.type === "disable" && !usedDisableDirectives.has(directive))
-        .map(directive => ({
-            ruleId: null,
-            message: directive.ruleId
-                ? `Unused eslint-disable directive (no problems were reported from '${directive.ruleId}').`
-                : "Unused eslint-disable directive (no problems were reported).",
-            line: directive.unprocessedDirective.line,
-            column: directive.unprocessedDirective.column,
-            severity: options.reportUnusedDisableDirectives === "warn" ? 1 : 2,
-            nodeType: null
-        }));
+    const unusedDisableDirectivesToReport = options.directives
+        .filter(directive => directive.type === "disable" && !usedDisableDirectives.has(directive));
 
+    const processed = processUnusedDisableDirectives(unusedDisableDirectivesToReport);
+
+    const unusedDisableDirectives = processed
+        .map(({ description, fix, unprocessedDirective }) => {
+            const { parentComment, type, line, column } = unprocessedDirective;
+
+            return {
+                ruleId: null,
+                message: description
+                    ? `Unused eslint-disable directive (no problems were reported from ${description}).`
+                    : "Unused eslint-disable directive (no problems were reported).",
+                line: type === "disable-next-line" ? parentComment.commentToken.loc.start.line : line,
+                column: type === "disable-next-line" ? parentComment.commentToken.loc.start.column + 1 : column,
+                severity: options.reportUnusedDisableDirectives === "warn" ? 1 : 2,
+                nodeType: null,
+                ...options.disableFixes ? {} : { fix }
+            };
+        });
+
     return { problems, unusedDisableDirectives };
@@ -109,3 +289,3 @@ }
  * Given a list of directive comments (i.e. metadata about eslint-disable and eslint-enable comments) and a list
- * of reported problems, determines which problems should be reported.
+ * of reported problems, adds the suppression information to the problems.
  * @param {Object} options Information about directives and problems
@@ -116,3 +296,4 @@ * @param {{
  *      line: number,
- *      column: number
+ *      column: number,
+ *      justification: string
  * }} options.directives Directive comments found in the file, with one-based columns.
@@ -124,6 +305,7 @@ * Two directive comments can only have the same location if they also have the same type (e.g. a single eslint-disable
  * @param {"off" | "warn" | "error"} options.reportUnusedDisableDirectives If `"warn"` or `"error"`, adds additional problems for unused directives
- * @returns {{ruleId: (string|null), line: number, column: number}[]}
- * A list of reported problems that were not disabled by the directive comments.
+ * @param {boolean} options.disableFixes If true, it doesn't make `fix` properties.
+ * @returns {{ruleId: (string|null), line: number, column: number, suppressions?: {kind: string, justification: string}}[]}
+ * An object with a list of reported problems, the suppressed of which contain the suppression information.
  */
-module.exports = ({ directives, problems, reportUnusedDisableDirectives = "off" }) => {
+module.exports = ({ directives, disableFixes, problems, reportUnusedDisableDirectives = "off" }) => {
     const blockDirectives = directives
@@ -134,3 +316,3 @@ .filter(directive => directive.type === "disable" || directive.type === "enable")
 
-    const lineDirectives = lodash.flatMap(directives, directive => {
+    const lineDirectives = directives.flatMap(directive => {
         switch (directive.type) {
@@ -161,2 +343,3 @@ case "disable":
         directives: blockDirectives,
+        disableFixes,
         reportUnusedDisableDirectives
@@ -167,2 +350,3 @@ });
         directives: lineDirectives,
+        disableFixes,
         reportUnusedDisableDirectives
@@ -169,0 +353,0 @@ });

lib/linter/code-path-analysis/code-path-analyzer.js

@@ -33,2 +33,14 @@ /**
 /**
+ * Checks if a given node appears as the value of a PropertyDefinition node.
+ * @param {ASTNode} node THe node to check.
+ * @returns {boolean} `true` if the node is a PropertyDefinition value,
+ *      false if not.
+ */
+function isPropertyDefinitionValue(node) {
+    const parent = node.parent;
+
+    return parent && parent.type === "PropertyDefinition" && parent.value === node;
+}
+
+/**
  * Checks whether the given logical operator is taken into account for the code
@@ -142,2 +154,3 @@ * path analysis.
         case "Property":
+        case "PropertyDefinition":
         case "MethodDefinition":
@@ -184,11 +197,14 @@ return (
         if (currentSegment !== headSegment && currentSegment) {
-            debug.dump(`onCodePathSegmentEnd ${currentSegment.id}`);
 
-            if (currentSegment.reachable) {
-                analyzer.emitter.emit(
-                    "onCodePathSegmentEnd",
-                    currentSegment,
-                    node
-                );
-            }
+            const eventName = currentSegment.reachable
+                ? "onCodePathSegmentEnd"
+                : "onUnreachableCodePathSegmentEnd";
+
+            debug.dump(`${eventName} ${currentSegment.id}`);
+
+            analyzer.emitter.emit(
+                eventName,
+                currentSegment,
+                node
+            );
         }
@@ -206,12 +222,15 @@ }
         if (currentSegment !== headSegment && headSegment) {
-            debug.dump(`onCodePathSegmentStart ${headSegment.id}`);
 
+            const eventName = headSegment.reachable
+                ? "onCodePathSegmentStart"
+                : "onUnreachableCodePathSegmentStart";
+
+            debug.dump(`${eventName} ${headSegment.id}`);
+
             CodePathSegment.markUsed(headSegment);
-            if (headSegment.reachable) {
-                analyzer.emitter.emit(
-                    "onCodePathSegmentStart",
-                    headSegment,
-                    node
-                );
-            }
+            analyzer.emitter.emit(
+                eventName,
+                headSegment,
+                node
+            );
         }
@@ -235,11 +254,13 @@ }
         const currentSegment = currentSegments[i];
+        const eventName = currentSegment.reachable
+            ? "onCodePathSegmentEnd"
+            : "onUnreachableCodePathSegmentEnd";
 
-        debug.dump(`onCodePathSegmentEnd ${currentSegment.id}`);
-        if (currentSegment.reachable) {
-            analyzer.emitter.emit(
-                "onCodePathSegmentEnd",
-                currentSegment,
-                node
-            );
-        }
+        debug.dump(`${eventName} ${currentSegment.id}`);
+
+        analyzer.emitter.emit(
+            eventName,
+            currentSegment,
+            node
+        );
     }
@@ -396,25 +417,64 @@
 
+    /**
+     * Creates a new code path and trigger the onCodePathStart event
+     * based on the currently selected node.
+     * @param {string} origin The reason the code path was started.
+     * @returns {void}
+     */
+    function startCodePath(origin) {
+        if (codePath) {
+
+            // Emits onCodePathSegmentStart events if updated.
+            forwardCurrentToHead(analyzer, node);
+            debug.dumpState(node, state, false);
+        }
+
+        // Create the code path of this scope.
+        codePath = analyzer.codePath = new CodePath({
+            id: analyzer.idGenerator.next(),
+            origin,
+            upper: codePath,
+            onLooped: analyzer.onLooped
+        });
+        state = CodePath.getState(codePath);
+
+        // Emits onCodePathStart events.
+        debug.dump(`onCodePathStart ${codePath.id}`);
+        analyzer.emitter.emit("onCodePathStart", codePath, node);
+    }
+
+    /*
+     * Special case: The right side of class field initializer is considered
+     * to be its own function, so we need to start a new code path in this
+     * case.
+     */
+    if (isPropertyDefinitionValue(node)) {
+        startCodePath("class-field-initializer");
+
+        /*
+         * Intentional fall through because `node` needs to also be
+         * processed by the code below. For example, if we have:
+         *
+         * class Foo {
+         *     a = () => {}
+         * }
+         *
+         * In this case, we also need start a second code path.
+         */
+
+    }
+
     switch (node.type) {
         case "Program":
+            startCodePath("program");
+            break;
+
         case "FunctionDeclaration":
         case "FunctionExpression":
         case "ArrowFunctionExpression":
-            if (codePath) {
+            startCodePath("function");
+            break;
 
-                // Emits onCodePathSegmentStart events if updated.
-                forwardCurrentToHead(analyzer, node);
-                debug.dumpState(node, state, false);
-            }
-
-            // Create the code path of this scope.
-            codePath = analyzer.codePath = new CodePath(
-                analyzer.idGenerator.next(),
-                codePath,
-                analyzer.onLooped
-            );
-            state = CodePath.getState(codePath);
-
-            // Emits onCodePathStart events.
-            debug.dump(`onCodePathStart ${codePath.id}`);
-            analyzer.emitter.emit("onCodePathStart", codePath, node);
+        case "StaticBlock":
+            startCodePath("class-static-block");
             break;
@@ -512,2 +572,3 @@
 function processCodePathToExit(analyzer, node) {
+
     const codePath = analyzer.codePath;
@@ -637,2 +698,28 @@ const state = CodePath.getState(codePath);
 function postprocess(analyzer, node) {
+
+    /**
+     * Ends the code path for the current node.
+     * @returns {void}
+     */
+    function endCodePath() {
+        let codePath = analyzer.codePath;
+
+        // Mark the current path as the final node.
+        CodePath.getState(codePath).makeFinal();
+
+        // Emits onCodePathSegmentEnd event of the current segments.
+        leaveFromCurrentSegment(analyzer, node);
+
+        // Emits onCodePathEnd event of this code path.
+        debug.dump(`onCodePathEnd ${codePath.id}`);
+        analyzer.emitter.emit("onCodePathEnd", codePath, node);
+        debug.dumpDot(codePath);
+
+        codePath = analyzer.codePath = analyzer.codePath.upper;
+        if (codePath) {
+            debug.dumpState(node, CodePath.getState(codePath), true);
+        }
+
+    }
+
     switch (node.type) {
@@ -642,20 +729,5 @@ case "Program":
         case "FunctionExpression":
-        case "ArrowFunctionExpression": {
-            let codePath = analyzer.codePath;
-
-            // Mark the current path as the final node.
-            CodePath.getState(codePath).makeFinal();
-
-            // Emits onCodePathSegmentEnd event of the current segments.
-            leaveFromCurrentSegment(analyzer, node);
-
-            // Emits onCodePathEnd event of this code path.
-            debug.dump(`onCodePathEnd ${codePath.id}`);
-            analyzer.emitter.emit("onCodePathEnd", codePath, node);
-            debug.dumpDot(codePath);
-
-            codePath = analyzer.codePath = analyzer.codePath.upper;
-            if (codePath) {
-                debug.dumpState(node, CodePath.getState(codePath), true);
-            }
+        case "ArrowFunctionExpression":
+        case "StaticBlock": {
+            endCodePath();
             break;
@@ -674,2 +746,23 @@ }
     }
+
+    /*
+     * Special case: The right side of class field initializer is considered
+     * to be its own function, so we need to end a code path in this
+     * case.
+     *
+     * We need to check after the other checks in order to close the
+     * code paths in the correct order for code like this:
+     *
+     *
+     * class Foo {
+     *     a = () => {}
+     * }
+     *
+     * In this case, The ArrowFunctionExpression code path is closed first
+     * and then we need to close the code path for the PropertyDefinition
+     * value.
+     */
+    if (isPropertyDefinitionValue(node)) {
+        endCodePath();
+    }
 }
@@ -687,3 +780,2 @@
 
-    // eslint-disable-next-line jsdoc/require-description
     /**
@@ -690,0 +782,0 @@ * @param {EventGenerator} eventGenerator An event generator to wrap.

lib/linter/code-path-analysis/code-path-segment.js

 /**
- * @fileoverview A class of the code path segment.
+ * @fileoverview The CodePathSegment class.
  * @author Toru Nagashima
@@ -33,7 +33,18 @@ */
  * A code path segment.
+ *
+ * Each segment is arranged in a series of linked lists (implemented by arrays)
+ * that keep track of the previous and next segments in a code path. In this way,
+ * you can navigate between all segments in any code path so long as you have a
+ * reference to any segment in that code path.
+ *
+ * When first created, the segment is in a detached state, meaning that it knows the
+ * segments that came before it but those segments don't know that this new segment
+ * follows it. Only when `CodePathSegment#markUsed()` is called on a segment does it
+ * officially become part of the code path by updating the previous segments to know
+ * that this new segment follows.
  */
 class CodePathSegment {
 
-    // eslint-disable-next-line jsdoc/require-description
     /**
+     * Creates a new instance.
      * @param {string} id An identifier.
@@ -54,3 +65,3 @@ * @param {CodePathSegment[]} allPrevSegments An array of the previous segments.
         /**
-         * An array of the next segments.
+         * An array of the next reachable segments.
          * @type {CodePathSegment[]}
@@ -61,3 +72,3 @@ */
         /**
-         * An array of the previous segments.
+         * An array of the previous reachable segments.
          * @type {CodePathSegment[]}
@@ -68,4 +79,3 @@ */
         /**
-         * An array of the next segments.
-         * This array includes unreachable segments.
+         * An array of all next segments including reachable and unreachable.
          * @type {CodePathSegment[]}
@@ -76,4 +86,3 @@ */
         /**
-         * An array of the previous segments.
-         * This array includes unreachable segments.
+         * An array of all previous segments including reachable and unreachable.
          * @type {CodePathSegment[]}
@@ -92,3 +101,7 @@ */
             value: {
+
+                // determines if the segment has been attached to the code path
                 used: false,
+
+                // array of previous segments coming from the end of a loop
                 loopedPrevSegments: []
@@ -98,6 +111,6 @@ }
 
-        /* istanbul ignore if */
+        /* c8 ignore start */
         if (debug.enabled) {
             this.internal.nodes = [];
-        }
+        }/* c8 ignore stop */
     }
@@ -111,3 +124,3 @@
     isLoopedPrevSegment(segment) {
-        return this.internal.loopedPrevSegments.indexOf(segment) !== -1;
+        return this.internal.loopedPrevSegments.includes(segment);
     }
@@ -125,5 +138,6 @@
     /**
-     * Creates a segment that follows given segments.
+     * Creates a new segment and appends it after the given segments.
      * @param {string} id An identifier.
-     * @param {CodePathSegment[]} allPrevSegments An array of the previous segments.
+     * @param {CodePathSegment[]} allPrevSegments An array of the previous segments
+     *      to append to.
      * @returns {CodePathSegment} The created segment.
@@ -140,3 +154,3 @@ */
     /**
-     * Creates an unreachable segment that follows given segments.
+     * Creates an unreachable segment and appends it after the given segments.
      * @param {string} id An identifier.
@@ -151,3 +165,3 @@ * @param {CodePathSegment[]} allPrevSegments An array of the previous segments.
          * In `if (a) return a; foo();` case, the unreachable segment preceded by
-         * the return statement is not used but must not be remove.
+         * the return statement is not used but must not be removed.
          */
@@ -172,3 +186,3 @@ CodePathSegment.markUsed(segment);
     /**
-     * Makes a given segment being used.
+     * Marks a given segment as used.
      *
@@ -188,2 +202,9 @@ * And this function registers the segment into the previous segments as a next.
         if (segment.reachable) {
+
+            /*
+             * If the segment is reachable, then it's officially part of the
+             * code path. This loops through all previous segments to update
+             * their list of next segments. Because the segment is reachable,
+             * it's added to both `nextSegments` and `allNextSegments`.
+             */
             for (i = 0; i < segment.allPrevSegments.length; ++i) {
@@ -196,2 +217,9 @@ const prevSegment = segment.allPrevSegments[i];
         } else {
+
+            /*
+             * If the segment is not reachable, then it's not officially part of the
+             * code path. This loops through all previous segments to update
+             * their list of next segments. Because the segment is not reachable,
+             * it's added only to `allNextSegments`.
+             */
             for (i = 0; i < segment.allPrevSegments.length; ++i) {
@@ -214,9 +242,10 @@ segment.allPrevSegments[i].allNextSegments.push(segment);
     /**
-     * Replaces unused segments with the previous segments of each unused segment.
-     * @param {CodePathSegment[]} segments An array of segments to replace.
-     * @returns {CodePathSegment[]} The replaced array.
+     * Creates a new array based on an array of segments. If any segment in the
+     * array is unused, then it is replaced by all of its previous segments.
+     * All used segments are returned as-is without replacement.
+     * @param {CodePathSegment[]} segments The array of segments to flatten.
+     * @returns {CodePathSegment[]} The flattened array.
      */
     static flattenUnusedSegments(segments) {
-        const done = Object.create(null);
-        const retv = [];
+        const done = new Set();
 
@@ -227,3 +256,3 @@ for (let i = 0; i < segments.length; ++i) {
             // Ignores duplicated.
-            if (done[segment.id]) {
+            if (done.has(segment)) {
                 continue;
@@ -237,14 +266,12 @@ }
 
-                    if (!done[prevSegment.id]) {
-                        done[prevSegment.id] = true;
-                        retv.push(prevSegment);
+                    if (!done.has(prevSegment)) {
+                        done.add(prevSegment);
                     }
                 }
             } else {
-                done[segment.id] = true;
-                retv.push(segment);
+                done.add(segment);
             }
         }
 
-        return retv;
+        return [...done];
     }
@@ -251,0 +278,0 @@ }

lib/linter/code-path-analysis/code-path-state.js

@@ -36,3 +36,3 @@ /**
         dest.push(segment);
-        if (others.indexOf(segment) === -1) {
+        if (!others.includes(segment)) {
             all.push(segment);
@@ -63,3 +63,3 @@ }
 
-    /* istanbul ignore next: foolproof (syntax error) */
+    /* c8 ignore next */
     return null;
@@ -84,3 +84,3 @@ }
 
-    /* istanbul ignore next: foolproof (syntax error) */
+    /* c8 ignore next */
     return null;
@@ -225,3 +225,2 @@ }
 
-    // eslint-disable-next-line jsdoc/require-description
     /**
@@ -367,2 +366,3 @@ * @param {IdGenerator} idGenerator An id generator to generate id for code
      * Pops the last choice context and finalizes it.
+     * @throws {Error} (Unreachable.)
      * @returns {ChoiceContext} The popped context.
@@ -441,3 +441,3 @@ */
 
-            /* istanbul ignore next */
+            /* c8 ignore next */
             default:
@@ -459,2 +459,3 @@ throw new Error("unreachable");
      * expression.
+     * @throws {Error} (Unreachable.)
      * @returns {void}
@@ -975,2 +976,3 @@ */
      * @param {string|null} label A label of the node which was triggered.
+     * @throws {Error} (Unreachable - unknown type.)
      * @returns {void}
@@ -1039,3 +1041,3 @@ */
 
-            /* istanbul ignore next */
+            /* c8 ignore next */
             default:
@@ -1048,2 +1050,3 @@ throw new Error(`unknown type: "${type}"`);
      * Pops the last context of a loop statement and finalizes it.
+     * @throws {Error} (Unreachable - unknown type.)
      * @returns {void}
@@ -1105,3 +1108,3 @@ */
 
-            /* istanbul ignore next */
+            /* c8 ignore next */
             default:
@@ -1403,3 +1406,3 @@ throw new Error("unreachable");
 
-        /* istanbul ignore else: foolproof (syntax error) */
+
         if (context) {
@@ -1409,2 +1412,3 @@ context.brokenForkContext.add(forkContext.head);
 
+        /* c8 ignore next */
         forkContext.replaceHead(forkContext.makeUnreachable(-1, -1));
@@ -1430,3 +1434,2 @@ }
 
-        /* istanbul ignore else: foolproof (syntax error) */
         if (context) {
@@ -1433,0 +1436,0 @@ if (context.continueDestSegments) {

lib/linter/code-path-analysis/code-path.js

@@ -24,9 +24,11 @@ /**
 
-    // eslint-disable-next-line jsdoc/require-description
     /**
-     * @param {string} id An identifier.
-     * @param {CodePath|null} upper The code path of the upper function scope.
-     * @param {Function} onLooped A callback function to notify looping.
+     * Creates a new instance.
+     * @param {Object} options Options for the function (see below).
+     * @param {string} options.id An identifier.
+     * @param {string} options.origin The type of code path origin.
+     * @param {CodePath|null} options.upper The code path of the upper function scope.
+     * @param {Function} options.onLooped A callback function to notify looping.
      */
-    constructor(id, upper, onLooped) {
+    constructor({ id, origin, upper, onLooped }) {
 
@@ -41,2 +43,9 @@ /**
         /**
+         * The reason that this code path was started. May be "program",
+         * "function", "class-field-initializer", or "class-static-block".
+         * @type {string}
+         */
+        this.origin = origin;
+
+        /**
          * The code path of the upper function scope.
@@ -113,2 +122,3 @@ * @type {CodePath|null}
      * @type {CodePathSegment[]}
+     * @deprecated
      */
@@ -209,3 +219,3 @@ get currentSegments() {
                 // Reset the flag of skipping if all branches have been skipped.
-                if (skippedSegment && segment.prevSegments.indexOf(skippedSegment) !== -1) {
+                if (skippedSegment && segment.prevSegments.includes(skippedSegment)) {
                     skippedSegment = null;
@@ -212,0 +222,0 @@ }

lib/linter/code-path-analysis/debug-helpers.js

@@ -23,4 +23,4 @@ /**
  */
-/* istanbul ignore next */
-function getId(segment) { // eslint-disable-line jsdoc/require-jsdoc
+/* c8 ignore next */
+function getId(segment) { // eslint-disable-line jsdoc/require-jsdoc -- Ignoring
     return segment.id + (segment.reachable ? "" : "!");
@@ -71,3 +71,3 @@ }
      */
-    dumpState: !debug.enabled ? debug : /* istanbul ignore next */ function(node, state, leaving) {
+    dumpState: !debug.enabled ? debug : /* c8 ignore next */ function(node, state, leaving) {
         for (let i = 0; i < state.currentSegments.length; ++i) {
@@ -103,3 +103,3 @@ const segInternal = state.currentSegments[i].internal;
      */
-    dumpDot: !debug.enabled ? debug : /* istanbul ignore next */ function(codePath) {
+    dumpDot: !debug.enabled ? debug : /* c8 ignore next */ function(codePath) {
         let text =
@@ -115,3 +115,3 @@ "\n" +
         if (codePath.thrownSegments.length > 0) {
-            text += "thrown[label=\"✘\",shape=circle,width=0.3,height=0.3,fixedsize];\n";
+            text += "thrown[label=\"✘\",shape=circle,width=0.3,height=0.3,fixedsize=true];\n";
         }
@@ -122,3 +122,3 @@
 
-        for (const id in traceMap) { // eslint-disable-line guard-for-in
+        for (const id in traceMap) { // eslint-disable-line guard-for-in -- Want ability to traverse prototype
             const segment = traceMap[id];
@@ -125,0 +125,0 @@

lib/linter/code-path-analysis/fork-context.js

@@ -100,3 +100,2 @@ /**
 
-    // eslint-disable-next-line jsdoc/require-description
     /**
@@ -103,0 +102,0 @@ * @param {IdGenerator} idGenerator An identifier generator for segments.

lib/linter/code-path-analysis/id-generator.js

@@ -21,3 +21,2 @@ /**
 
-    // eslint-disable-next-line jsdoc/require-description
     /**
@@ -38,6 +37,6 @@ * @param {string} prefix Optional. A prefix of generated ids.
 
-        /* istanbul ignore if */
+        /* c8 ignore start */
         if (this.n < 0) {
             this.n = 1;
-        }
+        }/* c8 ignore stop */
 
@@ -44,0 +43,0 @@ return this.prefix + this.n;

lib/linter/config-comment-parser.js

@@ -6,3 +6,3 @@ /**
 
-/* eslint-disable class-methods-use-this*/
+/* eslint class-methods-use-this: off -- Methods desired on instance */
 "use strict";
@@ -15,3 +15,7 @@
 const levn = require("levn"),
-    ConfigOps = require("@eslint/eslintrc/lib/shared/config-ops");
+    {
+        Legacy: {
+            ConfigOps
+        }
+    } = require("@eslint/eslintrc/universal");
 
@@ -21,2 +25,8 @@ const debug = require("debug")("eslint:config-comment-parser");
 //------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/** @typedef {import("../shared/types").LintMessage} LintMessage */
+
+//------------------------------------------------------------------------------
 // Public Interface
@@ -63,3 +73,3 @@ //------------------------------------------------------------------------------
      * @param {Object} location Start line and column of comments for potential error message.
-     * @returns {({success: true, config: Object}|{success: false, error: Problem})} Result map object
+     * @returns {({success: true, config: Object}|{success: false, error: LintMessage})} Result map object
      */
@@ -112,3 +122,4 @@ parseJsonConfig(string, location) {
                     line: location.start.line,
-                    column: location.start.column + 1
+                    column: location.start.column + 1,
+                    nodeType: null
                 }
@@ -135,4 +146,3 @@ };
 
-        // Collapse whitespace around commas
-        string.replace(/\s*,\s*/gu, ",").split(/,+/u).forEach(name => {
+        string.split(",").forEach(name => {
             const trimmedName = name.trim();
@@ -139,0 +149,0 @@

lib/linter/node-event-generator.js

@@ -13,3 +13,2 @@ /**
 const esquery = require("esquery");
-const lodash = require("lodash");
 
@@ -37,2 +36,29 @@ //------------------------------------------------------------------------------
 /**
+ * Computes the union of one or more arrays
+ * @param {...any[]} arrays One or more arrays to union
+ * @returns {any[]} The union of the input arrays
+ */
+function union(...arrays) {
+    return [...new Set(arrays.flat())];
+}
+
+/**
+ * Computes the intersection of one or more arrays
+ * @param {...any[]} arrays One or more arrays to intersect
+ * @returns {any[]} The intersection of the input arrays
+ */
+function intersection(...arrays) {
+    if (arrays.length === 0) {
+        return [];
+    }
+
+    let result = [...new Set(arrays[0])];
+
+    for (const array of arrays.slice(1)) {
+        result = result.filter(x => array.includes(x));
+    }
+    return result;
+}
+
+/**
  * Gets the possible types of a selector
@@ -51,3 +77,3 @@ * @param {Object} parsedSelector An object (from esquery) describing the matching behavior of the selector
             if (typesForComponents.every(Boolean)) {
-                return lodash.union(...typesForComponents);
+                return union(...typesForComponents);
             }
@@ -69,3 +95,3 @@ return null;
              */
-            return lodash.intersection(...typesForComponents);
+            return intersection(...typesForComponents);
         }
@@ -79,2 +105,9 @@
 
+        case "class":
+            if (parsedSelector.name === "function") {
+                return ["FunctionDeclaration", "FunctionExpression", "ArrowFunctionExpression"];
+            }
+
+            return null;
+
         default:
@@ -174,2 +207,4 @@ return null;
 
+const selectorCache = new Map();
+
 /**
@@ -180,6 +215,10 @@ * Parses a raw selector string, and returns the parsed selector along with specificity and type information.
  */
-const parseSelector = lodash.memoize(rawSelector => {
+function parseSelector(rawSelector) {
+    if (selectorCache.has(rawSelector)) {
+        return selectorCache.get(rawSelector);
+    }
+
     const parsedSelector = tryParseSelector(rawSelector);
 
-    return {
+    const result = {
         rawSelector,
@@ -192,4 +231,7 @@ isExit: rawSelector.endsWith(":exit"),
     };
-});
 
+    selectorCache.set(rawSelector, result);
+    return result;
+}
+
 //------------------------------------------------------------------------------
@@ -213,3 +255,2 @@ // Public Interface
 
-    // eslint-disable-next-line jsdoc/require-description
     /**
@@ -216,0 +257,0 @@ * @param {SafeEmitter} emitter

lib/linter/report-translator.js

@@ -20,2 +20,4 @@ /**
 
+/** @typedef {import("../shared/types").LintMessage} LintMessage */
+
 /**
@@ -33,19 +35,2 @@ * An error message description
 
-/**
- * Information about the report
- * @typedef {Object} ReportInfo
- * @property {string} ruleId
- * @property {(0|1|2)} severity
- * @property {(string|undefined)} message
- * @property {(string|undefined)} [messageId]
- * @property {number} line
- * @property {number} column
- * @property {(number|undefined)} [endLine]
- * @property {(number|undefined)} [endColumn]
- * @property {(string|null)} nodeType
- * @property {string} source
- * @property {({text: string, range: (number[]|null)}|null)} [fix]
- * @property {Array<{text: string, range: (number[]|null)}|null>} [suggestions]
- */
-
 //------------------------------------------------------------------------------
@@ -121,2 +106,29 @@ // Module Definition
 /**
+ * Clones the given fix object.
+ * @param {Fix|null} fix The fix to clone.
+ * @returns {Fix|null} Deep cloned fix object or `null` if `null` or `undefined` was passed in.
+ */
+function cloneFix(fix) {
+    if (!fix) {
+        return null;
+    }
+
+    return {
+        range: [fix.range[0], fix.range[1]],
+        text: fix.text
+    };
+}
+
+/**
+ * Check that a fix has a valid range.
+ * @param {Fix|null} fix The fix to validate.
+ * @returns {void}
+ */
+function assertValidFix(fix) {
+    if (fix) {
+        assert(fix.range && typeof fix.range[0] === "number" && typeof fix.range[1] === "number", `Fix has invalid range: ${JSON.stringify(fix, null, 2)}`);
+    }
+}
+
+/**
  * Compares items in a fixes array by range.
@@ -139,2 +151,6 @@ * @param {Fix} a The first message.
 function mergeFixes(fixes, sourceCode) {
+    for (const fix of fixes) {
+        assertValidFix(fix);
+    }
+
     if (fixes.length === 0) {
@@ -144,3 +160,3 @@ return null;
     if (fixes.length === 1) {
-        return fixes[0];
+        return cloneFix(fixes[0]);
     }
@@ -189,3 +205,5 @@
     }
-    return fix;
+
+    assertValidFix(fix);
+    return cloneFix(fix);
 }
@@ -231,3 +249,3 @@
  * @param {Array<{text: string, range: (number[]|null)}>} options.suggestions The array of suggestions objects
- * @returns {function(...args): ReportInfo} Function that returns information about the report
+ * @returns {LintMessage} Information about the report
  */
@@ -307,3 +325,3 @@ function createProblem(options) {
  * @param {SourceCode} sourceCode The `SourceCode` instance for the text being linted
- * @returns {function(...args): ReportInfo} Function that returns information about the report
+ * @returns {function(...args): LintMessage} Function that returns information about the report
  */
@@ -310,0 +328,0 @@

lib/linter/rules.js

@@ -33,2 +33,5 @@ /**
 
+/**
+ * A storage for rules.
+ */
 class Rules {
@@ -35,0 +38,0 @@ constructor() {

lib/linter/safe-emitter.js

@@ -15,4 +15,4 @@ /**
  * @typedef {Object} SafeEmitter
- * @property {function(eventName: string, listenerFunc: Function): void} on Adds a listener for a given event name
- * @property {function(eventName: string, arg1?: any, arg2?: any, arg3?: any)} emit Emits an event with a given name.
+ * @property {(eventName: string, listenerFunc: Function) => void} on Adds a listener for a given event name
+ * @property {(eventName: string, arg1?: any, arg2?: any, arg3?: any) => void} emit Emits an event with a given name.
  * This calls all the listeners that were listening for that name, with `arg1`, `arg2`, and `arg3` as arguments.
@@ -19,0 +19,0 @@ * @property {function(): string[]} eventNames Gets the list of event names that have registered listeners.

lib/linter/source-code-fixer.js

@@ -83,4 +83,4 @@ /**
      * Try to use the 'fix' from a problem.
-     * @param   {Message} problem The message object to apply fixes from
-     * @returns {boolean}         Whether fix was successfully applied
+     * @param {Message} problem The message object to apply fixes from
+     * @returns {boolean} Whether fix was successfully applied
      */
@@ -87,0 +87,0 @@ function attemptFix(problem) {

lib/linter/timing.js

@@ -12,3 +12,3 @@ /**
 
-/* istanbul ignore next */
+/* c8 ignore next */
 /**
@@ -26,3 +26,3 @@ * Align the string to left
 
-/* istanbul ignore next */
+/* c8 ignore next */
 /**
@@ -69,3 +69,3 @@ * Align the string to right
 
-/* istanbul ignore next */
+/* c8 ignore next */
 /**
@@ -122,6 +122,6 @@ * display the data
 
-    console.log(table.join("\n")); // eslint-disable-line no-console
+    console.log(table.join("\n")); // eslint-disable-line no-console -- Debugging function
 }
 
-/* istanbul ignore next */
+/* c8 ignore next */
 module.exports = (function() {
@@ -133,3 +133,3 @@
      * Time the run
-     * @param {*} key key from the data object
+     * @param {any} key key from the data object
      * @param {Function} fn function to be called
@@ -146,6 +146,7 @@ * @returns {Function} function to be executed
             let t = process.hrtime();
+            const result = fn(...args);
 
-            fn(...args);
             t = process.hrtime(t);
             data[key] += t[0] * 1e3 + t[1] / 1e6;
+            return result;
         };
@@ -152,0 +153,0 @@ }

lib/options.js

@@ -15,2 +15,49 @@ /**
 //------------------------------------------------------------------------------
+// Typedefs
+//------------------------------------------------------------------------------
+
+/**
+ * The options object parsed by Optionator.
+ * @typedef {Object} ParsedCLIOptions
+ * @property {boolean} cache Only check changed files
+ * @property {string} cacheFile Path to the cache file. Deprecated: use --cache-location
+ * @property {string} [cacheLocation] Path to the cache file or directory
+ * @property {"metadata" | "content"} cacheStrategy Strategy to use for detecting changed files in the cache
+ * @property {boolean} [color] Force enabling/disabling of color
+ * @property {string} [config] Use this configuration, overriding .eslintrc.* config options if present
+ * @property {boolean} debug Output debugging information
+ * @property {string[]} [env] Specify environments
+ * @property {boolean} envInfo Output execution environment information
+ * @property {boolean} errorOnUnmatchedPattern Prevent errors when pattern is unmatched
+ * @property {boolean} eslintrc Disable use of configuration from .eslintrc.*
+ * @property {string[]} [ext] Specify JavaScript file extensions
+ * @property {boolean} fix Automatically fix problems
+ * @property {boolean} fixDryRun Automatically fix problems without saving the changes to the file system
+ * @property {("directive" | "problem" | "suggestion" | "layout")[]} [fixType] Specify the types of fixes to apply (directive, problem, suggestion, layout)
+ * @property {string} format Use a specific output format
+ * @property {string[]} [global] Define global variables
+ * @property {boolean} [help] Show help
+ * @property {boolean} ignore Disable use of ignore files and patterns
+ * @property {string} [ignorePath] Specify path of ignore file
+ * @property {string[]} [ignorePattern] Pattern of files to ignore (in addition to those in .eslintignore)
+ * @property {boolean} init Run config initialization wizard
+ * @property {boolean} inlineConfig Prevent comments from changing config or rules
+ * @property {number} maxWarnings Number of warnings to trigger nonzero exit code
+ * @property {string} [outputFile] Specify file to write report to
+ * @property {string} [parser] Specify the parser to be used
+ * @property {Object} [parserOptions] Specify parser options
+ * @property {string[]} [plugin] Specify plugins
+ * @property {string} [printConfig] Print the configuration for the given file
+ * @property {boolean | undefined} reportUnusedDisableDirectives Adds reported errors for unused eslint-disable directives
+ * @property {string} [resolvePluginsRelativeTo] A folder where plugins should be resolved from, CWD by default
+ * @property {Object} [rule] Specify rules
+ * @property {string[]} [rulesdir] Load additional rules from this directory. Deprecated: Use rules from plugins
+ * @property {boolean} stdin Lint code provided on <STDIN>
+ * @property {string} [stdinFilename] Specify filename to process STDIN as
+ * @property {boolean} quiet Report errors only
+ * @property {boolean} [version] Output the version number
+ * @property {string[]} _ Positional filenames or patterns
+ */
+
+//------------------------------------------------------------------------------
 // Initialization and Public Interface
@@ -20,13 +67,21 @@ //------------------------------------------------------------------------------
 // exports "parse(args)", "generateHelp()", and "generateHelpForOption(optionName)"
-module.exports = optionator({
-    prepend: "eslint [options] file.js [file.js] [dir]",
-    defaults: {
-        concatRepeatedArrays: true,
-        mergeRepeatedObjects: true
-    },
-    options: [
-        {
-            heading: "Basic configuration"
-        },
-        {
+
+/**
+ * Creates the CLI options for ESLint.
+ * @param {boolean} usingFlatConfig Indicates if flat config is being used.
+ * @returns {Object} The optionator instance.
+ */
+module.exports = function(usingFlatConfig) {
+
+    let lookupFlag;
+
+    if (usingFlatConfig) {
+        lookupFlag = {
+            option: "config-lookup",
+            type: "Boolean",
+            default: "true",
+            description: "Disable look up for eslint.config.js"
+        };
+    } else {
+        lookupFlag = {
             option: "eslintrc",
@@ -36,230 +91,290 @@ type: "Boolean",
             description: "Disable use of configuration from .eslintrc.*"
-        },
-        {
-            option: "config",
-            alias: "c",
-            type: "path::String",
-            description: "Use this configuration, overriding .eslintrc.* config options if present"
-        },
-        {
+        };
+    }
+
+    let envFlag;
+
+    if (!usingFlatConfig) {
+        envFlag = {
             option: "env",
             type: "[String]",
             description: "Specify environments"
-        },
-        {
+        };
+    }
+
+    let extFlag;
+
+    if (!usingFlatConfig) {
+        extFlag = {
             option: "ext",
             type: "[String]",
             description: "Specify JavaScript file extensions"
-        },
-        {
-            option: "global",
-            type: "[String]",
-            description: "Define global variables"
-        },
-        {
-            option: "parser",
-            type: "String",
-            description: "Specify the parser to be used"
-        },
-        {
-            option: "parser-options",
-            type: "Object",
-            description: "Specify parser options"
-        },
-        {
+        };
+    }
+
+    let resolvePluginsFlag;
+
+    if (!usingFlatConfig) {
+        resolvePluginsFlag = {
             option: "resolve-plugins-relative-to",
             type: "path::String",
             description: "A folder where plugins should be resolved from, CWD by default"
-        },
-        {
-            heading: "Specifying rules and plugins"
-        },
-        {
+        };
+    }
+
+    let rulesDirFlag;
+
+    if (!usingFlatConfig) {
+        rulesDirFlag = {
             option: "rulesdir",
             type: "[path::String]",
-            description: "Use additional rules from this directory"
-        },
-        {
-            option: "plugin",
-            type: "[String]",
-            description: "Specify plugins"
-        },
-        {
-            option: "rule",
-            type: "Object",
-            description: "Specify rules"
-        },
-        {
-            heading: "Fixing problems"
-        },
-        {
-            option: "fix",
-            type: "Boolean",
-            default: false,
-            description: "Automatically fix problems"
-        },
-        {
-            option: "fix-dry-run",
-            type: "Boolean",
-            default: false,
-            description: "Automatically fix problems without saving the changes to the file system"
-        },
-        {
-            option: "fix-type",
-            type: "Array",
-            description: "Specify the types of fixes to apply (problem, suggestion, layout)"
-        },
-        {
-            heading: "Ignoring files"
-        },
-        {
+            description: "Load additional rules from this directory. Deprecated: Use rules from plugins"
+        };
+    }
+
+    let ignorePathFlag;
+
+    if (!usingFlatConfig) {
+        ignorePathFlag = {
             option: "ignore-path",
             type: "path::String",
             description: "Specify path of ignore file"
+        };
+    }
+
+    return optionator({
+        prepend: "eslint [options] file.js [file.js] [dir]",
+        defaults: {
+            concatRepeatedArrays: true,
+            mergeRepeatedObjects: true
         },
-        {
-            option: "ignore",
-            type: "Boolean",
-            default: "true",
-            description: "Disable use of ignore files and patterns"
-        },
-        {
-            option: "ignore-pattern",
-            type: "[String]",
-            description: "Pattern of files to ignore (in addition to those in .eslintignore)",
-            concatRepeatedArrays: [true, {
-                oneValuePerFlag: true
-            }]
-        },
-        {
-            heading: "Using stdin"
-        },
-        {
-            option: "stdin",
-            type: "Boolean",
-            default: "false",
-            description: "Lint code provided on <STDIN>"
-        },
-        {
-            option: "stdin-filename",
-            type: "String",
-            description: "Specify filename to process STDIN as"
-        },
-        {
-            heading: "Handling warnings"
-        },
-        {
-            option: "quiet",
-            type: "Boolean",
-            default: "false",
-            description: "Report errors only"
-        },
-        {
-            option: "max-warnings",
-            type: "Int",
-            default: "-1",
-            description: "Number of warnings to trigger nonzero exit code"
-        },
-        {
-            heading: "Output"
-        },
-        {
-            option: "output-file",
-            alias: "o",
-            type: "path::String",
-            description: "Specify file to write report to"
-        },
-        {
-            option: "format",
-            alias: "f",
-            type: "String",
-            default: "stylish",
-            description: "Use a specific output format"
-        },
-        {
-            option: "color",
-            type: "Boolean",
-            alias: "no-color",
-            description: "Force enabling/disabling of color"
-        },
-        {
-            heading: "Inline configuration comments"
-        },
-        {
-            option: "inline-config",
-            type: "Boolean",
-            default: "true",
-            description: "Prevent comments from changing config or rules"
-        },
-        {
-            option: "report-unused-disable-directives",
-            type: "Boolean",
-            default: void 0,
-            description: "Adds reported errors for unused eslint-disable directives"
-        },
-        {
-            heading: "Caching"
-        },
-        {
-            option: "cache",
-            type: "Boolean",
-            default: "false",
-            description: "Only check changed files"
-        },
-        {
-            option: "cache-file",
-            type: "path::String",
-            default: ".eslintcache",
-            description: "Path to the cache file. Deprecated: use --cache-location"
-        },
-        {
-            option: "cache-location",
-            type: "path::String",
-            description: "Path to the cache file or directory"
-        },
-        {
-            heading: "Miscellaneous"
-        },
-        {
-            option: "init",
-            type: "Boolean",
-            default: "false",
-            description: "Run config initialization wizard"
-        },
-        {
-            option: "env-info",
-            type: "Boolean",
-            default: "false",
-            description: "Output execution environment information"
-        },
-        {
-            option: "error-on-unmatched-pattern",
-            type: "Boolean",
-            default: "true",
-            description: "Prevent errors when pattern is unmatched"
-        },
-        {
-            option: "debug",
-            type: "Boolean",
-            default: false,
-            description: "Output debugging information"
-        },
-        {
-            option: "help",
-            alias: "h",
-            type: "Boolean",
-            description: "Show help"
-        },
-        {
-            option: "version",
-            alias: "v",
-            type: "Boolean",
-            description: "Output the version number"
-        },
-        {
-            option: "print-config",
-            type: "path::String",
-            description: "Print the configuration for the given file"
-        }
-    ]
-});
+        options: [
+            {
+                heading: "Basic configuration"
+            },
+            lookupFlag,
+            {
+                option: "config",
+                alias: "c",
+                type: "path::String",
+                description: usingFlatConfig
+                    ? "Use this configuration instead of eslint.config.js"
+                    : "Use this configuration, overriding .eslintrc.* config options if present"
+            },
+            envFlag,
+            extFlag,
+            {
+                option: "global",
+                type: "[String]",
+                description: "Define global variables"
+            },
+            {
+                option: "parser",
+                type: "String",
+                description: "Specify the parser to be used"
+            },
+            {
+                option: "parser-options",
+                type: "Object",
+                description: "Specify parser options"
+            },
+            resolvePluginsFlag,
+            {
+                heading: "Specify Rules and Plugins"
+            },
+            {
+                option: "plugin",
+                type: "[String]",
+                description: "Specify plugins"
+            },
+            {
+                option: "rule",
+                type: "Object",
+                description: "Specify rules"
+            },
+            rulesDirFlag,
+            {
+                heading: "Fix Problems"
+            },
+            {
+                option: "fix",
+                type: "Boolean",
+                default: false,
+                description: "Automatically fix problems"
+            },
+            {
+                option: "fix-dry-run",
+                type: "Boolean",
+                default: false,
+                description: "Automatically fix problems without saving the changes to the file system"
+            },
+            {
+                option: "fix-type",
+                type: "Array",
+                description: "Specify the types of fixes to apply (directive, problem, suggestion, layout)"
+            },
+            {
+                heading: "Ignore Files"
+            },
+            ignorePathFlag,
+            {
+                option: "ignore",
+                type: "Boolean",
+                default: "true",
+                description: "Disable use of ignore files and patterns"
+            },
+            {
+                option: "ignore-pattern",
+                type: "[String]",
+                description: "Pattern of files to ignore (in addition to those in .eslintignore)",
+                concatRepeatedArrays: [true, {
+                    oneValuePerFlag: true
+                }]
+            },
+            {
+                heading: "Use stdin"
+            },
+            {
+                option: "stdin",
+                type: "Boolean",
+                default: "false",
+                description: "Lint code provided on <STDIN>"
+            },
+            {
+                option: "stdin-filename",
+                type: "String",
+                description: "Specify filename to process STDIN as"
+            },
+            {
+                heading: "Handle Warnings"
+            },
+            {
+                option: "quiet",
+                type: "Boolean",
+                default: "false",
+                description: "Report errors only"
+            },
+            {
+                option: "max-warnings",
+                type: "Int",
+                default: "-1",
+                description: "Number of warnings to trigger nonzero exit code"
+            },
+            {
+                heading: "Output"
+            },
+            {
+                option: "output-file",
+                alias: "o",
+                type: "path::String",
+                description: "Specify file to write report to"
+            },
+            {
+                option: "format",
+                alias: "f",
+                type: "String",
+                default: "stylish",
+                description: "Use a specific output format"
+            },
+            {
+                option: "color",
+                type: "Boolean",
+                alias: "no-color",
+                description: "Force enabling/disabling of color"
+            },
+            {
+                heading: "Inline configuration comments"
+            },
+            {
+                option: "inline-config",
+                type: "Boolean",
+                default: "true",
+                description: "Prevent comments from changing config or rules"
+            },
+            {
+                option: "report-unused-disable-directives",
+                type: "Boolean",
+                default: void 0,
+                description: "Adds reported errors for unused eslint-disable directives"
+            },
+            {
+                heading: "Caching"
+            },
+            {
+                option: "cache",
+                type: "Boolean",
+                default: "false",
+                description: "Only check changed files"
+            },
+            {
+                option: "cache-file",
+                type: "path::String",
+                default: ".eslintcache",
+                description: "Path to the cache file. Deprecated: use --cache-location"
+            },
+            {
+                option: "cache-location",
+                type: "path::String",
+                description: "Path to the cache file or directory"
+            },
+            {
+                option: "cache-strategy",
+                dependsOn: ["cache"],
+                type: "String",
+                default: "metadata",
+                enum: ["metadata", "content"],
+                description: "Strategy to use for detecting changed files in the cache"
+            },
+            {
+                heading: "Miscellaneous"
+            },
+            {
+                option: "init",
+                type: "Boolean",
+                default: "false",
+                description: "Run config initialization wizard"
+            },
+            {
+                option: "env-info",
+                type: "Boolean",
+                default: "false",
+                description: "Output execution environment information"
+            },
+            {
+                option: "error-on-unmatched-pattern",
+                type: "Boolean",
+                default: "true",
+                description: "Prevent errors when pattern is unmatched"
+            },
+            {
+                option: "exit-on-fatal-error",
+                type: "Boolean",
+                default: "false",
+                description: "Exit with exit code 2 in case of fatal error"
+            },
+            {
+                option: "debug",
+                type: "Boolean",
+                default: false,
+                description: "Output debugging information"
+            },
+            {
+                option: "help",
+                alias: "h",
+                type: "Boolean",
+                description: "Show help"
+            },
+            {
+                option: "version",
+                alias: "v",
+                type: "Boolean",
+                description: "Output the version number"
+            },
+            {
+                option: "print-config",
+                type: "path::String",
+                description: "Print the configuration for the given file"
+            }
+        ].filter(value => !!value)
+    });
+};

lib/rule-tester/rule-tester.js

@@ -7,3 +7,3 @@ /**
 
-/* global describe, it */
+/* globals describe, it -- Mocha globals */
 
@@ -48,6 +48,8 @@ /*
     util = require("util"),
-    lodash = require("lodash"),
+    merge = require("lodash.merge"),
+    equal = require("fast-deep-equal"),
     Traverser = require("../../lib/shared/traverser"),
     { getRuleOptionsSchema, validate } = require("../shared/config-validator"),
-    { Linter, SourceCodeFixer, interpolate } = require("../linter");
+    { Linter, SourceCodeFixer, interpolate } = require("../linter"),
+    CodePath = require("../linter/code-path-analysis/code-path");
 
@@ -57,3 +59,6 @@ const ajv = require("../shared/ajv")({ strictDefaults: true });
 const espreePath = require.resolve("espree");
+const parserSymbol = Symbol.for("eslint.RuleTester.parser");
 
+const { SourceCode } = require("../source-code");
+
 //------------------------------------------------------------------------------
@@ -64,6 +69,9 @@ // Typedefs
 /** @typedef {import("../shared/types").Parser} Parser */
+/** @typedef {import("../shared/types").Rule} Rule */
 
+
 /**
  * A test case that is expected to pass lint.
  * @typedef {Object} ValidTestCase
+ * @property {string} [name] Name for the test case.
  * @property {string} code Code for the test case.
@@ -77,2 +85,3 @@ * @property {any[]} [options] Options for the test case.
  * @property {{ [name: string]: boolean }} [env] Environments for the test case.
+ * @property {boolean} [only] Run only this test case or the subset of test cases with this property.
  */
@@ -83,2 +92,3 @@
  * @typedef {Object} InvalidTestCase
+ * @property {string} [name] Name for the test case.
  * @property {string} code Code for the test case.
@@ -94,2 +104,3 @@ * @property {number | Array<TestCaseError | string | RegExp>} errors Expected errors.
  * @property {{ [name: string]: boolean }} [env] Environments for the test case.
+ * @property {boolean} [only] Run only this test case or the subset of test cases with this property.
  */
@@ -126,2 +137,3 @@
 const RuleTesterParameters = [
+    "name",
     "code",
@@ -131,3 +143,4 @@ "filename",
     "errors",
-    "output"
+    "output",
+    "only"
 ];
@@ -162,4 +175,39 @@
 
+const forbiddenMethods = [
+    "applyInlineConfig",
+    "applyLanguageOptions",
+    "finalize"
+];
+
 const hasOwnProperty = Function.call.bind(Object.hasOwnProperty);
 
+const DEPRECATED_SOURCECODE_PASSTHROUGHS = {
+    getSource: "getText",
+    getSourceLines: "getLines",
+    getAllComments: "getAllComments",
+    getNodeByRangeIndex: "getNodeByRangeIndex",
+
+    // getComments: "getComments", -- already handled by a separate error
+    getCommentsBefore: "getCommentsBefore",
+    getCommentsAfter: "getCommentsAfter",
+    getCommentsInside: "getCommentsInside",
+    getJSDocComment: "getJSDocComment",
+    getFirstToken: "getFirstToken",
+    getFirstTokens: "getFirstTokens",
+    getLastToken: "getLastToken",
+    getLastTokens: "getLastTokens",
+    getTokenAfter: "getTokenAfter",
+    getTokenBefore: "getTokenBefore",
+    getTokenByRangeStart: "getTokenByRangeStart",
+    getTokens: "getTokens",
+    getTokensAfter: "getTokensAfter",
+    getTokensBefore: "getTokensBefore",
+    getTokensBetween: "getTokensBetween",
+
+    getScope: "getScope",
+    getAncestors: "getAncestors",
+    getDeclaredVariables: "getDeclaredVariables",
+    markVariableAsUsed: "markVariableAsUsed"
+};
+
 /**
@@ -217,4 +265,7 @@ * Clones a given value deeply.
 function sanitize(text) {
+    if (typeof text !== "string") {
+        return "";
+    }
     return text.replace(
-        /[\u0000-\u0009\u000b-\u001a]/gu, // eslint-disable-line no-control-regex
+        /[\u0000-\u0009\u000b-\u001a]/gu, // eslint-disable-line no-control-regex -- Escaping controls
         c => `\\u${c.codePointAt(0).toString(16).padStart(4, "0")}`
@@ -249,2 +300,3 @@ );
 
+
 /**
@@ -269,4 +321,6 @@ * Define `start`/`end` properties of all nodes of the given AST as throwing error.
 function wrapParser(parser) {
+
     if (typeof parser.parseForESLint === "function") {
         return {
+            [parserSymbol]: parser,
             parseForESLint(...args) {
@@ -280,3 +334,5 @@ const ret = parser.parseForESLint(...args);
     }
+
     return {
+        [parserSymbol]: parser,
         parse(...args) {
@@ -291,2 +347,103 @@ const ast = parser.parse(...args);
 
+/**
+ * Function to replace `SourceCode.prototype.getComments`.
+ * @returns {void}
+ * @throws {Error} Deprecation message.
+ */
+function getCommentsDeprecation() {
+    throw new Error(
+        "`SourceCode#getComments()` is deprecated and will be removed in a future major version. Use `getCommentsBefore()`, `getCommentsAfter()`, and `getCommentsInside()` instead."
+    );
+}
+
+/**
+ * Function to replace forbidden `SourceCode` methods.
+ * @param {string} methodName The name of the method to forbid.
+ * @returns {Function} The function that throws the error.
+ */
+function throwForbiddenMethodError(methodName) {
+    return () => {
+        throw new Error(
+            `\`SourceCode#${methodName}()\` cannot be called inside a rule.`
+        );
+    };
+}
+
+/**
+ * Emit a deprecation warning if function-style format is being used.
+ * @param {string} ruleName Name of the rule.
+ * @returns {void}
+ */
+function emitLegacyRuleAPIWarning(ruleName) {
+    if (!emitLegacyRuleAPIWarning[`warned-${ruleName}`]) {
+        emitLegacyRuleAPIWarning[`warned-${ruleName}`] = true;
+        process.emitWarning(
+            `"${ruleName}" rule is using the deprecated function-style format and will stop working in ESLint v9. Please use object-style format: https://eslint.org/docs/latest/extend/custom-rules`,
+            "DeprecationWarning"
+        );
+    }
+}
+
+/**
+ * Emit a deprecation warning if rule has options but is missing the "meta.schema" property
+ * @param {string} ruleName Name of the rule.
+ * @returns {void}
+ */
+function emitMissingSchemaWarning(ruleName) {
+    if (!emitMissingSchemaWarning[`warned-${ruleName}`]) {
+        emitMissingSchemaWarning[`warned-${ruleName}`] = true;
+        process.emitWarning(
+            `"${ruleName}" rule has options but is missing the "meta.schema" property and will stop working in ESLint v9. Please add a schema: https://eslint.org/docs/latest/extend/custom-rules#options-schemas`,
+            "DeprecationWarning"
+        );
+    }
+}
+
+/**
+ * Emit a deprecation warning if a rule uses a deprecated `context` method.
+ * @param {string} ruleName Name of the rule.
+ * @param {string} methodName The name of the method on `context` that was used.
+ * @returns {void}
+ */
+function emitDeprecatedContextMethodWarning(ruleName, methodName) {
+    if (!emitDeprecatedContextMethodWarning[`warned-${ruleName}-${methodName}`]) {
+        emitDeprecatedContextMethodWarning[`warned-${ruleName}-${methodName}`] = true;
+        process.emitWarning(
+            `"${ruleName}" rule is using \`context.${methodName}()\`, which is deprecated and will be removed in ESLint v9. Please use \`sourceCode.${DEPRECATED_SOURCECODE_PASSTHROUGHS[methodName]}()\` instead.`,
+            "DeprecationWarning"
+        );
+    }
+}
+
+/**
+ * Emit a deprecation warning if rule uses CodePath#currentSegments.
+ * @param {string} ruleName Name of the rule.
+ * @returns {void}
+ */
+function emitCodePathCurrentSegmentsWarning(ruleName) {
+    if (!emitCodePathCurrentSegmentsWarning[`warned-${ruleName}`]) {
+        emitCodePathCurrentSegmentsWarning[`warned-${ruleName}`] = true;
+        process.emitWarning(
+            `"${ruleName}" rule uses CodePath#currentSegments and will stop working in ESLint v9. Please read the documentation for how to update your code: https://eslint.org/docs/latest/extend/code-path-analysis#usage-examples`,
+            "DeprecationWarning"
+        );
+    }
+}
+
+/**
+ * Emit a deprecation warning if `context.parserServices` is used.
+ * @param {string} ruleName Name of the rule.
+ * @returns {void}
+ */
+function emitParserServicesWarning(ruleName) {
+    if (!emitParserServicesWarning[`warned-${ruleName}`]) {
+        emitParserServicesWarning[`warned-${ruleName}`] = true;
+        process.emitWarning(
+            `"${ruleName}" rule is using \`context.parserServices\`, which is deprecated and will be removed in ESLint v9. Please use \`sourceCode.parserServices\` instead.`,
+            "DeprecationWarning"
+        );
+    }
+}
+
+
 //------------------------------------------------------------------------------
@@ -299,2 +456,3 @@ // Public Interface
 const IT = Symbol("it");
+const IT_ONLY = Symbol("itOnly");
 
@@ -306,2 +464,3 @@ /**
  * @param {Function} method The logic of the test case.
+ * @throws {Error} Any error upon execution of `method`.
  * @returns {any} Returned value of `method`.
@@ -331,2 +490,5 @@ */
 
+/**
+ * Mocha test wrapper.
+ */
 class RuleTester {
@@ -345,6 +507,5 @@
          */
-        this.testerConfig = lodash.merge(
-
-            // we have to clone because merge uses the first argument for recipient
-            lodash.cloneDeep(defaultConfig),
+        this.testerConfig = merge(
+            {},
+            defaultConfig,
             testerConfig,
@@ -365,6 +526,7 @@ { rules: { "rule-tester/validate-ast": "error" } }
      * @param {Object} config the configuration to use.
+     * @throws {TypeError} If non-object config.
      * @returns {void}
      */
     static setDefaultConfig(config) {
-        if (typeof config !== "object") {
+        if (typeof config !== "object" || config === null) {
             throw new TypeError("RuleTester.setDefaultConfig: config must be an object");
@@ -392,3 +554,3 @@ }
     static resetDefaultConfig() {
-        defaultConfig = lodash.cloneDeep(testerDefaultConfig);
+        defaultConfig = merge({}, testerDefaultConfig);
     }
@@ -425,8 +587,51 @@
     /**
+     * Adds the `only` property to a test to run it in isolation.
+     * @param {string | ValidTestCase | InvalidTestCase} item A single test to run by itself.
+     * @returns {ValidTestCase | InvalidTestCase} The test with `only` set.
+     */
+    static only(item) {
+        if (typeof item === "string") {
+            return { code: item, only: true };
+        }
+
+        return { ...item, only: true };
+    }
+
+    static get itOnly() {
+        if (typeof this[IT_ONLY] === "function") {
+            return this[IT_ONLY];
+        }
+        if (typeof this[IT] === "function" && typeof this[IT].only === "function") {
+            return Function.bind.call(this[IT].only, this[IT]);
+        }
+        if (typeof it === "function" && typeof it.only === "function") {
+            return Function.bind.call(it.only, it);
+        }
+
+        if (typeof this[DESCRIBE] === "function" || typeof this[IT] === "function") {
+            throw new Error(
+                "Set `RuleTester.itOnly` to use `only` with a custom test framework.\n" +
+                "See https://eslint.org/docs/latest/integrate/nodejs-api#customizing-ruletester for more."
+            );
+        }
+        if (typeof it === "function") {
+            throw new Error("The current test framework does not support exclusive tests with `only`.");
+        }
+        throw new Error("To use `only`, use RuleTester with a test framework that provides `it.only()` like Mocha.");
+    }
+
+    static set itOnly(value) {
+        this[IT_ONLY] = value;
+    }
+
+    /**
      * Define a rule for one particular run of tests.
      * @param {string} name The name of the rule to define.
-     * @param {Function} rule The rule definition.
+     * @param {Function | Rule} rule The rule definition.
      * @returns {void}
      */
     defineRule(name, rule) {
+        if (typeof rule === "function") {
+            emitLegacyRuleAPIWarning(name);
+        }
         this.rules[name] = rule;
@@ -438,3 +643,3 @@ }
      * @param {string} ruleName The name of the rule to run.
-     * @param {Function} rule The rule to test.
+     * @param {Function | Rule} rule The rule to test.
      * @param {{
@@ -444,2 +649,4 @@ *   valid: (ValidTestCase | string)[],
      * }} test The collection of tests to run.
+     * @throws {TypeError|Error} If non-object `test`, or if a required
+     * scenario of the given type is missing.
      * @returns {void}
@@ -454,3 +661,3 @@ */
 
-        if (lodash.isNil(test) || typeof test !== "object") {
+        if (!test || typeof test !== "object") {
             throw new TypeError(`Test Scenarios for rule ${ruleName} : Could not find test scenario object`);
@@ -460,3 +667,3 @@ }
         requiredScenarios.forEach(scenarioType => {
-            if (lodash.isNil(test[scenarioType])) {
+            if (!test[scenarioType]) {
                 scenarioErrors.push(`Could not find any ${scenarioType} test scenarios`);
@@ -472,2 +679,5 @@ }
 
+        if (typeof rule === "function") {
+            emitLegacyRuleAPIWarning(ruleName);
+        }
 
@@ -482,3 +692,34 @@ linter.defineRule(ruleName, Object.assign({}, rule, {
 
-                return (typeof rule === "function" ? rule : rule.create)(context);
+                // wrap all deprecated methods
+                const newContext = Object.create(
+                    context,
+                    Object.fromEntries(Object.keys(DEPRECATED_SOURCECODE_PASSTHROUGHS).map(methodName => [
+                        methodName,
+                        {
+                            value(...args) {
+
+                                // emit deprecation warning
+                                emitDeprecatedContextMethodWarning(ruleName, methodName);
+
+                                // call the original method
+                                return context[methodName].call(this, ...args);
+                            },
+                            enumerable: true
+                        }
+                    ]))
+                );
+
+                // emit warning about context.parserServices
+                const parserServices = context.parserServices;
+
+                Object.defineProperty(newContext, "parserServices", {
+                    get() {
+                        emitParserServicesWarning(ruleName);
+                        return parserServices;
+                    }
+                });
+
+                Object.freeze(newContext);
+
+                return (typeof rule === "function" ? rule : rule.create)(newContext);
             }
@@ -492,2 +733,3 @@ }));
          * @param {string|Object} item Item to run the rule against
+         * @throws {Error} If an invalid schema.
          * @returns {Object} Eslint run result
@@ -497,3 +739,3 @@ * @private
         function runRuleForItem(item) {
-            let config = lodash.cloneDeep(testerConfig),
+            let config = merge({}, testerConfig),
                 code, filename, output, beforeAST, afterAST;
@@ -510,4 +752,8 @@
                  */
-                const itemConfig = lodash.omit(item, RuleTesterParameters);
+                const itemConfig = { ...item };
 
+                for (const parameter of RuleTesterParameters) {
+                    delete itemConfig[parameter];
+                }
+
                 /*
@@ -517,3 +763,3 @@ * Create the config object from the tester config and this item
                  */
-                config = lodash.merge(
+                config = merge(
                     config,
@@ -530,2 +776,11 @@ itemConfig
                 assert(Array.isArray(item.options), "options must be an array");
+                if (
+                    item.options.length > 0 &&
+                    typeof rule === "object" &&
+                    (
+                        !rule.meta || (rule.meta && (typeof rule.meta.schema === "undefined" || rule.meta.schema === null))
+                    )
+                ) {
+                    emitMissingSchemaWarning(ruleName);
+                }
                 config.rules[ruleName] = [1].concat(item.options);
@@ -543,10 +798,14 @@ } else {
              */
-            linter.defineRule("rule-tester/validate-ast", () => ({
-                Program(node) {
-                    beforeAST = cloneDeeplyExcludesParent(node);
-                },
-                "Program:exit"(node) {
-                    afterAST = node;
+            linter.defineRule("rule-tester/validate-ast", {
+                create() {
+                    return {
+                        Program(node) {
+                            beforeAST = cloneDeeplyExcludesParent(node);
+                        },
+                        "Program:exit"(node) {
+                            afterAST = node;
+                        }
+                    };
                 }
-            }));
+            });
 
@@ -590,3 +849,28 @@ if (typeof config.parser === "string") {
             // Verify the code.
-            const messages = linter.verify(code, config, filename);
+            const { getComments, applyLanguageOptions, applyInlineConfig, finalize } = SourceCode.prototype;
+            const originalCurrentSegments = Object.getOwnPropertyDescriptor(CodePath.prototype, "currentSegments");
+            let messages;
+
+            try {
+                SourceCode.prototype.getComments = getCommentsDeprecation;
+                Object.defineProperty(CodePath.prototype, "currentSegments", {
+                    get() {
+                        emitCodePathCurrentSegmentsWarning(ruleName);
+                        return originalCurrentSegments.get.call(this);
+                    }
+                });
+
+                forbiddenMethods.forEach(methodName => {
+                    SourceCode.prototype[methodName] = throwForbiddenMethodError(methodName);
+                });
+
+                messages = linter.verify(code, config, filename);
+            } finally {
+                SourceCode.prototype.getComments = getComments;
+                Object.defineProperty(CodePath.prototype, "currentSegments", originalCurrentSegments);
+                SourceCode.prototype.applyInlineConfig = applyInlineConfig;
+                SourceCode.prototype.applyLanguageOptions = applyLanguageOptions;
+                SourceCode.prototype.finalize = finalize;
+            }
+
             const fatalErrorMessage = messages.find(m => m.fatal);
@@ -627,3 +911,3 @@
         function assertASTDidntChange(beforeAST, afterAST) {
-            if (!lodash.isEqual(beforeAST, afterAST)) {
+            if (!equal(beforeAST, afterAST)) {
                 assert.fail("Rule should not modify AST.");
@@ -641,2 +925,9 @@ }
         function testValidTemplate(item) {
+            const code = typeof item === "object" ? item.code : item;
+
+            assert.ok(typeof code === "string", "Test case must specify a string value for 'code'");
+            if (item.name) {
+                assert.ok(typeof item.name === "string", "Optional test case property 'name' must be a string");
+            }
+
             const result = runRuleForItem(item);
@@ -646,3 +937,4 @@ const messages = result.messages;
             assert.strictEqual(messages.length, 0, util.format("Should have no errors but had %d: %s",
-                messages.length, util.inspect(messages)));
+                messages.length,
+                util.inspect(messages)));
 
@@ -682,2 +974,6 @@ assertASTDidntChange(result.beforeAST, result.afterAST);
         function testInvalidTemplate(item) {
+            assert.ok(typeof item.code === "string", "Test case must specify a string value for 'code'");
+            if (item.name) {
+                assert.ok(typeof item.name === "string", "Optional test case property 'name' must be a string");
+            }
             assert.ok(item.errors || item.errors === 0,
@@ -703,9 +999,14 @@ `Did not specify errors for an invalid test of ${ruleName}`);
                 assert.strictEqual(messages.length, item.errors, util.format("Should have %d error%s but had %d: %s",
-                    item.errors, item.errors === 1 ? "" : "s", messages.length, util.inspect(messages)));
+                    item.errors,
+                    item.errors === 1 ? "" : "s",
+                    messages.length,
+                    util.inspect(messages)));
             } else {
                 assert.strictEqual(
-                    messages.length, item.errors.length,
-                    util.format(
+                    messages.length, item.errors.length, util.format(
                         "Should have %d error%s but had %d: %s",
-                        item.errors.length, item.errors.length === 1 ? "" : "s", messages.length, util.inspect(messages)
+                        item.errors.length,
+                        item.errors.length === 1 ? "" : "s",
+                        messages.length,
+                        util.inspect(messages)
                     )
@@ -904,12 +1205,2 @@ );
 
-            // Rules that produce fixes must have `meta.fixable` property.
-            if (result.output !== item.code) {
-                assert.ok(
-                    hasOwnProperty(rule, "meta"),
-                    "Fixable rules should export a `meta.fixable` property."
-                );
-
-                // Linter throws if a rule that produced a fix has `meta` but doesn't have `meta.fixable`.
-            }
-
             assertASTDidntChange(result.beforeAST, result.afterAST);
@@ -921,19 +1212,31 @@ }
          * one of the templates above.
+         * The test suites for valid/invalid are created conditionally as
+         * test runners (eg. vitest) fail for empty test suites.
          */
-        RuleTester.describe(ruleName, () => {
-            RuleTester.describe("valid", () => {
-                test.valid.forEach(valid => {
-                    RuleTester.it(sanitize(typeof valid === "object" ? valid.code : valid), () => {
-                        testValidTemplate(valid);
+        this.constructor.describe(ruleName, () => {
+            if (test.valid.length > 0) {
+                this.constructor.describe("valid", () => {
+                    test.valid.forEach(valid => {
+                        this.constructor[valid.only ? "itOnly" : "it"](
+                            sanitize(typeof valid === "object" ? valid.name || valid.code : valid),
+                            () => {
+                                testValidTemplate(valid);
+                            }
+                        );
                     });
                 });
-            });
+            }
 
-            RuleTester.describe("invalid", () => {
-                test.invalid.forEach(invalid => {
-                    RuleTester.it(sanitize(invalid.code), () => {
-                        testInvalidTemplate(invalid);
+            if (test.invalid.length > 0) {
+                this.constructor.describe("invalid", () => {
+                    test.invalid.forEach(invalid => {
+                        this.constructor[invalid.only ? "itOnly" : "it"](
+                            sanitize(invalid.name || invalid.code),
+                            () => {
+                                testInvalidTemplate(invalid);
+                            }
+                        );
                     });
                 });
-            });
+            }
         });
@@ -943,4 +1246,4 @@ }
 
-RuleTester[DESCRIBE] = RuleTester[IT] = null;
+RuleTester[DESCRIBE] = RuleTester[IT] = RuleTester[IT_ONLY] = null;
 
 module.exports = RuleTester;

lib/rules/accessor-pairs.js

@@ -137,2 +137,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -143,6 +144,5 @@ meta: {
         docs: {
-            description: "enforce getter and setter pairs in objects and classes",
-            category: "Best Practices",
+            description: "Enforce getter and setter pairs in objects and classes",
             recommended: false,
-            url: "https://eslint.org/docs/rules/accessor-pairs"
+            url: "https://eslint.org/docs/latest/rules/accessor-pairs"
         },
@@ -183,3 +183,3 @@
         const enforceForClassMembers = config.enforceForClassMembers !== false;
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -230,49 +230,41 @@ /**
         /**
-         * Creates a new `AccessorData` object for the given getter or setter node.
-         * @param {ASTNode} node A getter or setter node.
-         * @returns {AccessorData} New `AccessorData` object that contains the given node.
+         * Checks accessor pairs in the given list of nodes.
+         * @param {ASTNode[]} nodes The list to check.
+         * @returns {void}
          * @private
          */
-        function createAccessorData(node) {
-            const name = astUtils.getStaticPropertyName(node);
-            const key = (name !== null) ? name : sourceCode.getTokens(node.key);
+        function checkList(nodes) {
+            const accessors = [];
+            let found = false;
 
-            return {
-                key,
-                getters: node.kind === "get" ? [node] : [],
-                setters: node.kind === "set" ? [node] : []
-            };
-        }
+            for (let i = 0; i < nodes.length; i++) {
+                const node = nodes[i];
 
-        /**
-         * Merges the given `AccessorData` object into the given accessors list.
-         * @param {AccessorData[]} accessors The list to merge into.
-         * @param {AccessorData} accessorData The object to merge.
-         * @returns {AccessorData[]} The same instance with the merged object.
-         * @private
-         */
-        function mergeAccessorData(accessors, accessorData) {
-            const equalKeyElement = accessors.find(a => areEqualKeys(a.key, accessorData.key));
+                if (isAccessorKind(node)) {
 
-            if (equalKeyElement) {
-                equalKeyElement.getters.push(...accessorData.getters);
-                equalKeyElement.setters.push(...accessorData.setters);
-            } else {
-                accessors.push(accessorData);
-            }
+                    // Creates a new `AccessorData` object for the given getter or setter node.
+                    const name = astUtils.getStaticPropertyName(node);
+                    const key = (name !== null) ? name : sourceCode.getTokens(node.key);
 
-            return accessors;
-        }
+                    // Merges the given `AccessorData` object into the given accessors list.
+                    for (let j = 0; j < accessors.length; j++) {
+                        const accessor = accessors[j];
 
-        /**
-         * Checks accessor pairs in the given list of nodes.
-         * @param {ASTNode[]} nodes The list to check.
-         * @returns {void}
-         * @private
-         */
-        function checkList(nodes) {
-            const accessors = nodes
-                .filter(isAccessorKind)
-                .map(createAccessorData)
-                .reduce(mergeAccessorData, []);
+                        if (areEqualKeys(accessor.key, key)) {
+                            accessor.getters.push(...node.kind === "get" ? [node] : []);
+                            accessor.setters.push(...node.kind === "set" ? [node] : []);
+                            found = true;
+                            break;
+                        }
+                    }
+                    if (!found) {
+                        accessors.push({
+                            key,
+                            getters: node.kind === "get" ? [node] : [],
+                            setters: node.kind === "set" ? [node] : []
+                        });
+                    }
+                    found = false;
+                }
+            }
 
@@ -306,8 +298,8 @@ for (const { getters, setters } of accessors) {
         function checkPropertyDescriptor(node) {
-            const namesToCheck = node.properties
+            const namesToCheck = new Set(node.properties
                 .filter(p => p.type === "Property" && p.kind === "init" && !p.computed)
-                .map(({ key }) => key.name);
+                .map(({ key }) => key.name));
 
-            const hasGetter = namesToCheck.includes("get");
-            const hasSetter = namesToCheck.includes("set");
+            const hasGetter = namesToCheck.has("get");
+            const hasSetter = namesToCheck.has("set");
 
@@ -314,0 +306,0 @@ if (checkSetWithoutGet && hasSetter && !hasGetter) {

lib/rules/array-bracket-newline.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "enforce linebreaks after opening and before closing array brackets",
-            category: "Stylistic Issues",
+            description: "Enforce linebreaks after opening and before closing array brackets",
             recommended: false,
-            url: "https://eslint.org/docs/rules/array-bracket-newline"
+            url: "https://eslint.org/docs/latest/rules/array-bracket-newline"
         },
@@ -61,3 +61,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -64,0 +64,0 @@

lib/rules/array-bracket-spacing.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "enforce consistent spacing inside array brackets",
-            category: "Stylistic Issues",
+            description: "Enforce consistent spacing inside array brackets",
             recommended: false,
-            url: "https://eslint.org/docs/rules/array-bracket-spacing"
+            url: "https://eslint.org/docs/latest/rules/array-bracket-spacing"
         },
@@ -58,3 +58,3 @@
         const spaced = context.options[0] === "always",
-            sourceCode = context.getSourceCode();
+            sourceCode = context.sourceCode;
 
@@ -61,0 +61,0 @@ /**

lib/rules/array-callback-return.js

@@ -19,14 +19,5 @@ /**
 const TARGET_NODE_TYPE = /^(?:Arrow)?FunctionExpression$/u;
-const TARGET_METHODS = /^(?:every|filter|find(?:Index)?|flatMap|forEach|map|reduce(?:Right)?|some|sort)$/u;
+const TARGET_METHODS = /^(?:every|filter|find(?:Last)?(?:Index)?|flatMap|forEach|map|reduce(?:Right)?|some|sort|toSorted)$/u;
 
 /**
- * Checks a given code path segment is reachable.
- * @param {CodePathSegment} segment A segment to check.
- * @returns {boolean} `true` if the segment is reachable.
- */
-function isReachable(segment) {
-    return segment.reachable;
-}
-
-/**
  * Checks a given node is a member access which has the specified name's
@@ -43,2 +34,18 @@ * property.
 /**
+ * Checks all segments in a set and returns true if any are reachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if any segment is reachable; false otherwise.
+ */
+function isAnySegmentReachable(segments) {
+
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+/**
  * Returns a human-legible description of an array method
@@ -130,6 +137,76 @@ * @param {string} arrayMethodName A method name to fully qualify
 
-    /* istanbul ignore next: unreachable */
+    /* c8 ignore next */
     return null;
 }
 
+/**
+ * Checks if the given node is a void expression.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} - `true` if the node is a void expression
+ */
+function isExpressionVoid(node) {
+    return node.type === "UnaryExpression" && node.operator === "void";
+}
+
+/**
+ * Fixes the linting error by prepending "void " to the given node
+ * @param {Object} sourceCode context given by context.sourceCode
+ * @param {ASTNode} node The node to fix.
+ * @param {Object} fixer The fixer object provided by ESLint.
+ * @returns {Array<Object>} - An array of fix objects to apply to the node.
+ */
+function voidPrependFixer(sourceCode, node, fixer) {
+
+    const requiresParens =
+
+        // prepending `void ` will fail if the node has a lower precedence than void
+        astUtils.getPrecedence(node) < astUtils.getPrecedence({ type: "UnaryExpression", operator: "void" }) &&
+
+        // check if there are parentheses around the node to avoid redundant parentheses
+        !astUtils.isParenthesised(sourceCode, node);
+
+    // avoid parentheses issues
+    const returnOrArrowToken = sourceCode.getTokenBefore(
+        node,
+        node.parent.type === "ArrowFunctionExpression"
+            ? astUtils.isArrowToken
+
+            // isReturnToken
+            : token => token.type === "Keyword" && token.value === "return"
+    );
+
+    const firstToken = sourceCode.getTokenAfter(returnOrArrowToken);
+
+    const prependSpace =
+
+        // is return token, as => allows void to be adjacent
+        returnOrArrowToken.value === "return" &&
+
+        // If two tokens (return and "(") are adjacent
+        returnOrArrowToken.range[1] === firstToken.range[0];
+
+    return [
+        fixer.insertTextBefore(firstToken, `${prependSpace ? " " : ""}void ${requiresParens ? "(" : ""}`),
+        fixer.insertTextAfter(node, requiresParens ? ")" : "")
+    ];
+}
+
+/**
+ * Fixes the linting error by `wrapping {}` around the given node's body.
+ * @param {Object} sourceCode context given by context.sourceCode
+ * @param {ASTNode} node The node to fix.
+ * @param {Object} fixer The fixer object provided by ESLint.
+ * @returns {Array<Object>} - An array of fix objects to apply to the node.
+ */
+function curlyWrapFixer(sourceCode, node, fixer) {
+    const arrowToken = sourceCode.getTokenBefore(node.body, astUtils.isArrowToken);
+    const firstToken = sourceCode.getTokenAfter(arrowToken);
+    const lastToken = sourceCode.getLastToken(node);
+
+    return [
+        fixer.insertTextBefore(firstToken, "{"),
+        fixer.insertTextAfter(lastToken, "}")
+    ];
+}
+
 //------------------------------------------------------------------------------
@@ -139,2 +216,3 @@ // Rule Definition
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -145,8 +223,10 @@ meta: {
         docs: {
-            description: "enforce `return` statements in callbacks of array methods",
-            category: "Best Practices",
+            description: "Enforce `return` statements in callbacks of array methods",
             recommended: false,
-            url: "https://eslint.org/docs/rules/array-callback-return"
+            url: "https://eslint.org/docs/latest/rules/array-callback-return"
         },
 
+        // eslint-disable-next-line eslint-plugin/require-meta-has-suggestions -- false positive
+        hasSuggestions: true,
+
         schema: [
@@ -163,2 +243,6 @@ {
                         default: false
+                    },
+                    allowVoid: {
+                        type: "boolean",
+                        default: false
                     }
@@ -174,3 +258,5 @@ },
             expectedReturnValue: "{{arrayMethodName}}() expects a return value from {{name}}.",
-            expectedNoReturnValue: "{{arrayMethodName}}() expects no useless return value from {{name}}."
+            expectedNoReturnValue: "{{arrayMethodName}}() expects no useless return value from {{name}}.",
+            wrapBraces: "Wrap the expression in `{}`.",
+            prependVoid: "Prepend `void` to the expression."
         }
@@ -181,4 +267,4 @@ },
 
-        const options = context.options[0] || { allowImplicit: false, checkForEach: false };
-        const sourceCode = context.getSourceCode();
+        const options = context.options[0] || { allowImplicit: false, checkForEach: false, allowVoid: false };
+        const sourceCode = context.sourceCode;
 
@@ -209,15 +295,44 @@ let funcInfo = {
 
-            let messageId = null;
+            const messageAndSuggestions = { messageId: "", suggest: [] };
 
             if (funcInfo.arrayMethodName === "forEach") {
                 if (options.checkForEach && node.type === "ArrowFunctionExpression" && node.expression) {
-                    messageId = "expectedNoReturnValue";
+
+                    if (options.allowVoid) {
+                        if (isExpressionVoid(node.body)) {
+                            return;
+                        }
+
+                        messageAndSuggestions.messageId = "expectedNoReturnValue";
+                        messageAndSuggestions.suggest = [
+                            {
+                                messageId: "wrapBraces",
+                                fix(fixer) {
+                                    return curlyWrapFixer(sourceCode, node, fixer);
+                                }
+                            },
+                            {
+                                messageId: "prependVoid",
+                                fix(fixer) {
+                                    return voidPrependFixer(sourceCode, node.body, fixer);
+                                }
+                            }
+                        ];
+                    } else {
+                        messageAndSuggestions.messageId = "expectedNoReturnValue";
+                        messageAndSuggestions.suggest = [{
+                            messageId: "wrapBraces",
+                            fix(fixer) {
+                                return curlyWrapFixer(sourceCode, node, fixer);
+                            }
+                        }];
+                    }
                 }
             } else {
-                if (node.body.type === "BlockStatement" && funcInfo.codePath.currentSegments.some(isReachable)) {
-                    messageId = funcInfo.hasReturn ? "expectedAtEnd" : "expectedInside";
+                if (node.body.type === "BlockStatement" && isAnySegmentReachable(funcInfo.currentSegments)) {
+                    messageAndSuggestions.messageId = funcInfo.hasReturn ? "expectedAtEnd" : "expectedInside";
                 }
             }
 
-            if (messageId) {
+            if (messageAndSuggestions.messageId) {
                 const name = astUtils.getFunctionNameWithKind(node);
@@ -228,4 +343,5 @@
                     loc: astUtils.getFunctionHeadLoc(node, sourceCode),
-                    messageId,
-                    data: { name, arrayMethodName: fullMethodName(funcInfo.arrayMethodName) }
+                    messageId: messageAndSuggestions.messageId,
+                    data: { name, arrayMethodName: fullMethodName(funcInfo.arrayMethodName) },
+                    suggest: messageAndSuggestions.suggest.length !== 0 ? messageAndSuggestions.suggest : null
                 });
@@ -255,3 +371,4 @@ }
                         !node.generator,
-                    node
+                    node,
+                    currentSegments: new Set()
                 };
@@ -265,2 +382,19 @@ },
 
+            onUnreachableCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+            onCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+
             // Checks the return statement is valid.
@@ -275,3 +409,3 @@ ReturnStatement(node) {
 
-                let messageId = null;
+                const messageAndSuggestions = { messageId: "", suggest: [] };
 
@@ -282,3 +416,18 @@ if (funcInfo.arrayMethodName === "forEach") {
                     if (options.checkForEach && node.argument) {
-                        messageId = "expectedNoReturnValue";
+
+                        if (options.allowVoid) {
+                            if (isExpressionVoid(node.argument)) {
+                                return;
+                            }
+
+                            messageAndSuggestions.messageId = "expectedNoReturnValue";
+                            messageAndSuggestions.suggest = [{
+                                messageId: "prependVoid",
+                                fix(fixer) {
+                                    return voidPrependFixer(sourceCode, node.argument, fixer);
+                                }
+                            }];
+                        } else {
+                            messageAndSuggestions.messageId = "expectedNoReturnValue";
+                        }
                     }
@@ -289,14 +438,15 @@ } else {
                     if (!options.allowImplicit && !node.argument) {
-                        messageId = "expectedReturnValue";
+                        messageAndSuggestions.messageId = "expectedReturnValue";
                     }
                 }
 
-                if (messageId) {
+                if (messageAndSuggestions.messageId) {
                     context.report({
                         node,
-                        messageId,
+                        messageId: messageAndSuggestions.messageId,
                         data: {
                             name: astUtils.getFunctionNameWithKind(funcInfo.node),
                             arrayMethodName: fullMethodName(funcInfo.arrayMethodName)
-                        }
+                        },
+                        suggest: messageAndSuggestions.suggest.length !== 0 ? messageAndSuggestions.suggest : null
                     });
@@ -303,0 +453,0 @@ }

lib/rules/array-element-newline.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "enforce line breaks after each array element",
-            category: "Stylistic Issues",
+            description: "Enforce line breaks after each array element",
             recommended: false,
-            url: "https://eslint.org/docs/rules/array-element-newline"
+            url: "https://eslint.org/docs/latest/rules/array-element-newline"
         },
@@ -52,2 +52,3 @@
             },
+            type: "array",
             items: [
@@ -84,3 +85,3 @@ {
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -246,7 +247,11 @@ //----------------------------------------------------------------------
 
-            const linebreaksCount = node.elements.map((element, i) => {
+            let linebreaksCount = 0;
+
+            for (let i = 0; i < node.elements.length; i++) {
+                const element = node.elements[i];
+
                 const previousElement = elements[i - 1];
 
                 if (i === 0 || element === null || previousElement === null) {
-                    return false;
+                    continue;
                 }
@@ -258,4 +263,6 @@
 
-                return !astUtils.isTokenOnSameLine(lastTokenOfPreviousElement, firstTokenOfCurrentElement);
-            }).filter(isBreak => isBreak === true).length;
+                if (!astUtils.isTokenOnSameLine(lastTokenOfPreviousElement, firstTokenOfCurrentElement)) {
+                    linebreaksCount++;
+                }
+            }
 
@@ -262,0 +269,0 @@ const needsLinebreaks = (

lib/rules/arrow-body-style.js

@@ -17,2 +17,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +24,5 @@ meta: {
         docs: {
-            description: "require braces around arrow function bodies",
-            category: "ECMAScript 6",
+            description: "Require braces around arrow function bodies",
             recommended: false,
-            url: "https://eslint.org/docs/rules/arrow-body-style"
+            url: "https://eslint.org/docs/latest/rules/arrow-body-style"
         },
@@ -79,3 +79,3 @@
         const requireReturnForObjectLiteral = options[1] && options[1].requireReturnForObjectLiteral;
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         let funcInfo = null;
@@ -93,13 +93,13 @@
         /**
-         * Gets the closing parenthesis which is the pair of the given opening parenthesis.
-         * @param {Token} token The opening parenthesis token to get.
+         * Gets the closing parenthesis by the given node.
+         * @param {ASTNode} node first node after an opening parenthesis.
          * @returns {Token} The found closing parenthesis token.
          */
-        function findClosingParen(token) {
-            let node = sourceCode.getNodeByRangeIndex(token.range[0]);
+        function findClosingParen(node) {
+            let nodeToCheck = node;
 
-            while (!astUtils.isParenthesised(sourceCode, node)) {
-                node = node.parent;
+            while (!astUtils.isParenthesised(sourceCode, nodeToCheck)) {
+                nodeToCheck = nodeToCheck.parent;
             }
-            return sourceCode.getTokenAfter(node);
+            return sourceCode.getTokenAfter(nodeToCheck);
         }
@@ -233,8 +233,18 @@
                             const lastToken = sourceCode.getLastToken(node);
-                            const isParenthesisedObjectLiteral =
+
+                            let parenthesisedObjectLiteral = null;
+
+                            if (
                                 astUtils.isOpeningParenToken(firstTokenAfterArrow) &&
-                                astUtils.isOpeningBraceToken(secondTokenAfterArrow);
+                                astUtils.isOpeningBraceToken(secondTokenAfterArrow)
+                            ) {
+                                const braceNode = sourceCode.getNodeByRangeIndex(secondTokenAfterArrow.range[0]);
 
+                                if (braceNode.type === "ObjectExpression") {
+                                    parenthesisedObjectLiteral = braceNode;
+                                }
+                            }
+
                             // If the value is object literal, remove parentheses which were forced by syntax.
-                            if (isParenthesisedObjectLiteral) {
+                            if (parenthesisedObjectLiteral) {
                                 const openingParenToken = firstTokenAfterArrow;
@@ -255,3 +265,3 @@ const openingBraceToken = secondTokenAfterArrow;
                                 // Closing paren for the object doesn't have to be lastToken, e.g.: () => ({}).foo()
-                                fixes.push(fixer.remove(findClosingParen(openingBraceToken)));
+                                fixes.push(fixer.remove(findClosingParen(parenthesisedObjectLiteral)));
                                 fixes.push(fixer.insertTextAfter(lastToken, "}"));
@@ -258,0 +268,0 @@

lib/rules/arrow-parens.js

@@ -30,2 +30,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -36,6 +37,5 @@ meta: {
         docs: {
-            description: "require parentheses around arrow function arguments",
-            category: "ECMAScript 6",
+            description: "Require parentheses around arrow function arguments",
             recommended: false,
-            url: "https://eslint.org/docs/rules/arrow-parens"
+            url: "https://eslint.org/docs/latest/rules/arrow-parens"
         },
@@ -74,3 +74,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -77,0 +77,0 @@ /**

lib/rules/arrow-spacing.js

@@ -17,2 +17,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +24,5 @@ meta: {
         docs: {
-            description: "enforce consistent spacing before and after the arrow in arrow functions",
-            category: "ECMAScript 6",
+            description: "Enforce consistent spacing before and after the arrow in arrow functions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/arrow-spacing"
+            url: "https://eslint.org/docs/latest/rules/arrow-spacing"
         },
@@ -66,3 +66,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -69,0 +69,0 @@ /**

lib/rules/block-scoped-var.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "enforce the use of variables within the scope they are defined",
-            category: "Best Practices",
+            description: "Enforce the use of variables within the scope they are defined",
             recommended: false,
-            url: "https://eslint.org/docs/rules/block-scoped-var"
+            url: "https://eslint.org/docs/latest/rules/block-scoped-var"
         },
@@ -27,3 +27,3 @@
         messages: {
-            outOfScope: "'{{name}}' used outside of binding context."
+            outOfScope: "'{{name}}' declared on line {{definitionLine}} column {{definitionColumn}} is used outside of binding context."
         }
@@ -34,2 +34,3 @@ },
         let stack = [];
+        const sourceCode = context.sourceCode;
 
@@ -56,8 +57,18 @@ /**
          * @param {eslint-scope.Reference} reference A reference to report.
+         * @param {eslint-scope.Definition} definition A definition for which to report reference.
          * @returns {void}
          */
-        function report(reference) {
+        function report(reference, definition) {
             const identifier = reference.identifier;
+            const definitionPosition = definition.name.loc.start;
 
-            context.report({ node: identifier, messageId: "outOfScope", data: { name: identifier.name } });
+            context.report({
+                node: identifier,
+                messageId: "outOfScope",
+                data: {
+                    name: identifier.name,
+                    definitionLine: definitionPosition.line,
+                    definitionColumn: definitionPosition.column + 1
+                }
+            });
         }
@@ -91,3 +102,3 @@
             // Gets declared variables, and checks its references.
-            const variables = context.getDeclaredVariables(node);
+            const variables = sourceCode.getDeclaredVariables(node);
 
@@ -100,3 +111,3 @@ for (let i = 0; i < variables.length; ++i) {
                     .filter(isOutsideOfScope)
-                    .forEach(report);
+                    .forEach(ref => report(ref, variables[i].defs.find(def => def.parent === node)));
             }
@@ -123,2 +134,4 @@ }
             "CatchClause:exit": exitScope,
+            StaticBlock: enterScope,
+            "StaticBlock:exit": exitScope,
 
@@ -125,0 +138,0 @@ // Finds and reports references which are outside of valid scope.

lib/rules/block-spacing.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "disallow or enforce spaces inside of blocks after opening block and before closing block",
-            category: "Stylistic Issues",
+            description: "Disallow or enforce spaces inside of blocks after opening block and before closing block",
             recommended: false,
-            url: "https://eslint.org/docs/rules/block-spacing"
+            url: "https://eslint.org/docs/latest/rules/block-spacing"
         },
@@ -42,7 +42,7 @@
             messageId = always ? "missing" : "extra",
-            sourceCode = context.getSourceCode();
+            sourceCode = context.sourceCode;
 
         /**
          * Gets the open brace token from a given node.
-         * @param {ASTNode} node A BlockStatement/SwitchStatement node to get.
+         * @param {ASTNode} node A BlockStatement/StaticBlock/SwitchStatement node to get.
          * @returns {Token} The token of the open brace.
@@ -57,2 +57,8 @@ */
             }
+
+            if (node.type === "StaticBlock") {
+                return sourceCode.getFirstToken(node, { skip: 1 }); // skip the `static` token
+            }
+
+            // "BlockStatement"
             return sourceCode.getFirstToken(node);
@@ -80,4 +86,4 @@ }
         /**
-         * Reports invalid spacing style inside braces.
-         * @param {ASTNode} node A BlockStatement/SwitchStatement node to get.
+         * Checks and reports invalid spacing style inside braces.
+         * @param {ASTNode} node A BlockStatement/StaticBlock/SwitchStatement node to check.
          * @returns {void}
@@ -166,2 +172,3 @@ */
             BlockStatement: checkSpacingInsideBraces,
+            StaticBlock: checkSpacingInsideBraces,
             SwitchStatement: checkSpacingInsideBraces
@@ -168,0 +175,0 @@ };

lib/rules/brace-style.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "enforce consistent brace style for blocks",
-            category: "Stylistic Issues",
+            description: "Enforce consistent brace style for blocks",
             recommended: false,
-            url: "https://eslint.org/docs/rules/brace-style"
+            url: "https://eslint.org/docs/latest/rules/brace-style"
         },
@@ -58,3 +58,3 @@
             params = context.options[1] || {},
-            sourceCode = context.getSourceCode();
+            sourceCode = context.sourceCode;
 
@@ -162,2 +162,8 @@ //--------------------------------------------------------------------------
             },
+            StaticBlock(node) {
+                validateCurlyPair(
+                    sourceCode.getFirstToken(node, { skip: 1 }), // skip the `static` token
+                    sourceCode.getLastToken(node)
+                );
+            },
             ClassBody(node) {
@@ -164,0 +170,0 @@ validateCurlyPair(sourceCode.getFirstToken(node), sourceCode.getLastToken(node));

lib/rules/callback-return.js

 /**
  * @fileoverview Enforce return after a callback.
  * @author Jamund Ferguson
+ * @deprecated in ESLint v7.0.0
  */
@@ -11,2 +12,3 @@ "use strict";
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -21,6 +23,5 @@ meta: {
         docs: {
-            description: "require `return` statements after callbacks",
-            category: "Node.js and CommonJS",
+            description: "Require `return` statements after callbacks",
             recommended: false,
-            url: "https://eslint.org/docs/rules/callback-return"
+            url: "https://eslint.org/docs/latest/rules/callback-return"
         },
@@ -41,3 +42,3 @@
         const callbacks = context.options[0] || ["callback", "cb", "next"],
-            sourceCode = context.getSourceCode();
+            sourceCode = context.sourceCode;
 
@@ -58,3 +59,3 @@ //--------------------------------------------------------------------------
             }
-            if (types.indexOf(node.parent.type) === -1) {
+            if (!types.includes(node.parent.type)) {
                 return findClosestParentOfType(node.parent, types);
@@ -93,3 +94,3 @@ }
         function isCallback(node) {
-            return containsOnlyIdentifiers(node.callee) && callbacks.indexOf(sourceCode.getText(node.callee)) > -1;
+            return containsOnlyIdentifiers(node.callee) && callbacks.includes(sourceCode.getText(node.callee));
         }
@@ -96,0 +97,0 @@

lib/rules/camelcase.js

@@ -9,5 +9,12 @@ /**
 //------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +25,5 @@ meta: {
         docs: {
-            description: "enforce camelcase naming convention",
-            category: "Stylistic Issues",
+            description: "Enforce camelcase naming convention",
             recommended: false,
-            url: "https://eslint.org/docs/rules/camelcase"
+            url: "https://eslint.org/docs/latest/rules/camelcase"
         },
@@ -60,3 +66,4 @@
         messages: {
-            notCamelCase: "Identifier '{{name}}' is not in camel case."
+            notCamelCase: "Identifier '{{name}}' is not in camel case.",
+            notCamelCasePrivate: "#{{name}} is not in camel case."
         }
@@ -66,5 +73,4 @@ },
     create(context) {
-
         const options = context.options[0] || {};
-        let properties = options.properties || "";
+        const properties = options.properties === "never" ? "never" : "always";
         const ignoreDestructuring = options.ignoreDestructuring;
@@ -74,9 +80,4 @@ const ignoreImports = options.ignoreImports;
         const allow = options.allow || [];
+        const sourceCode = context.sourceCode;
 
-        let globalScope;
-
-        if (properties !== "always" && properties !== "never") {
-            properties = "always";
-        }
-
         //--------------------------------------------------------------------------
@@ -87,4 +88,3 @@ // Helpers
         // contains reported nodes to avoid reporting twice on destructuring with shorthand notation
-        const reported = [];
-        const ALLOWED_PARENT_TYPES = new Set(["CallExpression", "NewExpression"]);
+        const reported = new Set();
 
@@ -98,5 +98,6 @@ /**
         function isUnderscored(name) {
+            const nameBody = name.replace(/^_+|_+$/gu, "");
 
             // if there's an underscore, it might be A_CONSTANT, which is okay
-            return name.includes("_") && name !== name.toUpperCase();
+            return nameBody.includes("_") && nameBody !== nameBody.toUpperCase();
         }
@@ -117,93 +118,75 @@
         /**
-         * Checks if a parent of a node is an ObjectPattern.
-         * @param {ASTNode} node The node to check.
-         * @returns {boolean} if the node is inside an ObjectPattern
+         * Checks if a given name is good or not.
+         * @param {string} name The name to check.
+         * @returns {boolean} `true` if the name is good.
          * @private
          */
-        function isInsideObjectPattern(node) {
-            let current = node;
+        function isGoodName(name) {
+            return !isUnderscored(name) || isAllowed(name);
+        }
 
-            while (current) {
-                const parent = current.parent;
+        /**
+         * Checks if a given identifier reference or member expression is an assignment
+         * target.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} `true` if the node is an assignment target.
+         */
+        function isAssignmentTarget(node) {
+            const parent = node.parent;
 
-                if (parent && parent.type === "Property" && parent.computed && parent.key === current) {
-                    return false;
-                }
+            switch (parent.type) {
+                case "AssignmentExpression":
+                case "AssignmentPattern":
+                    return parent.left === node;
 
-                if (current.type === "ObjectPattern") {
+                case "Property":
+                    return (
+                        parent.parent.type === "ObjectPattern" &&
+                        parent.value === node
+                    );
+                case "ArrayPattern":
+                case "RestElement":
                     return true;
-                }
 
-                current = parent;
+                default:
+                    return false;
             }
-
-            return false;
         }
 
         /**
-         * Checks whether the given node represents assignment target property in destructuring.
-         *
-         * For examples:
-         *    ({a: b.foo} = c);  // => true for `foo`
-         *    ([a.foo] = b);     // => true for `foo`
-         *    ([a.foo = 1] = b); // => true for `foo`
-         *    ({...a.foo} = b);  // => true for `foo`
-         * @param {ASTNode} node An Identifier node to check
-         * @returns {boolean} True if the node is an assignment target property in destructuring.
+         * Checks if a given binding identifier uses the original name as-is.
+         * - If it's in object destructuring or object expression, the original name is its property name.
+         * - If it's in import declaration, the original name is its exported name.
+         * @param {ASTNode} node The `Identifier` node to check.
+         * @returns {boolean} `true` if the identifier uses the original name as-is.
          */
-        function isAssignmentTargetPropertyInDestructuring(node) {
-            if (
-                node.parent.type === "MemberExpression" &&
-                node.parent.property === node &&
-                !node.parent.computed
-            ) {
-                const effectiveParent = node.parent.parent;
+        function equalsToOriginalName(node) {
+            const localName = node.name;
+            const valueNode = node.parent.type === "AssignmentPattern"
+                ? node.parent
+                : node;
+            const parent = valueNode.parent;
 
-                return (
-                    effectiveParent.type === "Property" &&
-                    effectiveParent.value === node.parent &&
-                    effectiveParent.parent.type === "ObjectPattern" ||
-                    effectiveParent.type === "ArrayPattern" ||
-                    effectiveParent.type === "RestElement" ||
-                    (
-                        effectiveParent.type === "AssignmentPattern" &&
-                        effectiveParent.left === node.parent
-                    )
-                );
-            }
-            return false;
-        }
+            switch (parent.type) {
+                case "Property":
+                    return (
+                        (parent.parent.type === "ObjectPattern" || parent.parent.type === "ObjectExpression") &&
+                        parent.value === valueNode &&
+                        !parent.computed &&
+                        parent.key.type === "Identifier" &&
+                        parent.key.name === localName
+                    );
 
-        /**
-         * Checks whether the given node represents a reference to a global variable that is not declared in the source code.
-         * These identifiers will be allowed, as it is assumed that user has no control over the names of external global variables.
-         * @param {ASTNode} node `Identifier` node to check.
-         * @returns {boolean} `true` if the node is a reference to a global variable.
-         */
-        function isReferenceToGlobalVariable(node) {
-            const variable = globalScope.set.get(node.name);
+                case "ImportSpecifier":
+                    return (
+                        parent.local === node &&
+                        astUtils.getModuleExportName(parent.imported) === localName
+                    );
 
-            return variable && variable.defs.length === 0 &&
-                variable.references.some(ref => ref.identifier === node);
+                default:
+                    return false;
+            }
         }
 
         /**
-         * Checks whether the given node represents a reference to a property of an object in an object literal expression.
-         * This allows to differentiate between a global variable that is allowed to be used as a reference, and the key
-         * of the expressed object (which shouldn't be allowed).
-         * @param {ASTNode} node `Identifier` node to check.
-         * @returns {boolean} `true` if the node is a property name of an object literal expression
-         */
-        function isPropertyNameInObjectLiteral(node) {
-            const parent = node.parent;
-
-            return (
-                parent.type === "Property" &&
-                parent.parent.type === "ObjectExpression" &&
-                !parent.computed &&
-                parent.key === node
-            );
-        }
-
-        /**
          * Reports an AST node as a rule violation.
@@ -215,120 +198,211 @@ * @param {ASTNode} node The node to report.
         function report(node) {
-            if (!reported.includes(node)) {
-                reported.push(node);
-                context.report({ node, messageId: "notCamelCase", data: { name: node.name } });
+            if (reported.has(node.range[0])) {
+                return;
             }
+            reported.add(node.range[0]);
+
+            // Report it.
+            context.report({
+                node,
+                messageId: node.type === "PrivateIdentifier"
+                    ? "notCamelCasePrivate"
+                    : "notCamelCase",
+                data: { name: node.name }
+            });
         }
 
-        return {
+        /**
+         * Reports an identifier reference or a binding identifier.
+         * @param {ASTNode} node The `Identifier` node to report.
+         * @returns {void}
+         */
+        function reportReferenceId(node) {
 
-            Program() {
-                globalScope = context.getScope();
-            },
+            /*
+             * For backward compatibility, if it's in callings then ignore it.
+             * Not sure why it is.
+             */
+            if (
+                node.parent.type === "CallExpression" ||
+                node.parent.type === "NewExpression"
+            ) {
+                return;
+            }
 
-            Identifier(node) {
+            /*
+             * For backward compatibility, if it's a default value of
+             * destructuring/parameters then ignore it.
+             * Not sure why it is.
+             */
+            if (
+                node.parent.type === "AssignmentPattern" &&
+                node.parent.right === node
+            ) {
+                return;
+            }
 
-                /*
-                 * Leading and trailing underscores are commonly used to flag
-                 * private/protected identifiers, strip them before checking if underscored
-                 */
-                const name = node.name,
-                    nameIsUnderscored = isUnderscored(name.replace(/^_+|_+$/gu, "")),
-                    effectiveParent = (node.parent.type === "MemberExpression") ? node.parent.parent : node.parent;
+            /*
+             * The `ignoreDestructuring` flag skips the identifiers that uses
+             * the property name as-is.
+             */
+            if (ignoreDestructuring && equalsToOriginalName(node)) {
+                return;
+            }
 
-                // First, we ignore the node if it match the ignore list
-                if (isAllowed(name)) {
-                    return;
-                }
+            report(node);
+        }
 
-                // Check if it's a global variable
-                if (ignoreGlobals && isReferenceToGlobalVariable(node) && !isPropertyNameInObjectLiteral(node)) {
-                    return;
-                }
+        return {
 
-                // MemberExpressions get special rules
-                if (node.parent.type === "MemberExpression") {
+            // Report camelcase of global variable references ------------------
+            Program(node) {
+                const scope = sourceCode.getScope(node);
 
-                    // "never" check properties
-                    if (properties === "never") {
-                        return;
-                    }
+                if (!ignoreGlobals) {
 
-                    // Always report underscored object names
-                    if (node.parent.object.type === "Identifier" && node.parent.object.name === node.name && nameIsUnderscored) {
-                        report(node);
+                    // Defined globals in config files or directive comments.
+                    for (const variable of scope.variables) {
+                        if (
+                            variable.identifiers.length > 0 ||
+                            isGoodName(variable.name)
+                        ) {
+                            continue;
+                        }
+                        for (const reference of variable.references) {
 
-                    // Report AssignmentExpressions only if they are the left side of the assignment
-                    } else if (effectiveParent.type === "AssignmentExpression" && nameIsUnderscored && (effectiveParent.right.type !== "MemberExpression" || effectiveParent.left.type === "MemberExpression" && effectiveParent.left.property.name === node.name)) {
-                        report(node);
-
-                    } else if (isAssignmentTargetPropertyInDestructuring(node) && nameIsUnderscored) {
-                        report(node);
+                            /*
+                             * For backward compatibility, this rule reports read-only
+                             * references as well.
+                             */
+                            reportReferenceId(reference.identifier);
+                        }
                     }
+                }
 
-                /*
-                 * Properties have their own rules, and
-                 * AssignmentPattern nodes can be treated like Properties:
-                 * e.g.: const { no_camelcased = false } = bar;
-                 */
-                } else if (node.parent.type === "Property" || node.parent.type === "AssignmentPattern") {
+                // Undefined globals.
+                for (const reference of scope.through) {
+                    const id = reference.identifier;
 
-                    if (node.parent.parent && node.parent.parent.type === "ObjectPattern") {
-                        if (node.parent.shorthand && node.parent.value.left && nameIsUnderscored) {
-                            report(node);
-                        }
+                    if (isGoodName(id.name)) {
+                        continue;
+                    }
 
-                        const assignmentKeyEqualsValue = node.parent.key.name === node.parent.value.name;
+                    /*
+                     * For backward compatibility, this rule reports read-only
+                     * references as well.
+                     */
+                    reportReferenceId(id);
+                }
+            },
 
-                        if (nameIsUnderscored && node.parent.computed) {
-                            report(node);
-                        }
+            // Report camelcase of declared variables --------------------------
+            [[
+                "VariableDeclaration",
+                "FunctionDeclaration",
+                "FunctionExpression",
+                "ArrowFunctionExpression",
+                "ClassDeclaration",
+                "ClassExpression",
+                "CatchClause"
+            ]](node) {
+                for (const variable of sourceCode.getDeclaredVariables(node)) {
+                    if (isGoodName(variable.name)) {
+                        continue;
+                    }
+                    const id = variable.identifiers[0];
 
-                        // prevent checking righthand side of destructured object
-                        if (node.parent.key === node && node.parent.value !== node) {
-                            return;
-                        }
+                    // Report declaration.
+                    if (!(ignoreDestructuring && equalsToOriginalName(id))) {
+                        report(id);
+                    }
 
-                        const valueIsUnderscored = node.parent.value.name && nameIsUnderscored;
-
-                        // ignore destructuring if the option is set, unless a new identifier is created
-                        if (valueIsUnderscored && !(assignmentKeyEqualsValue && ignoreDestructuring)) {
-                            report(node);
+                    /*
+                     * For backward compatibility, report references as well.
+                     * It looks unnecessary because declarations are reported.
+                     */
+                    for (const reference of variable.references) {
+                        if (reference.init) {
+                            continue; // Skip the write references of initializers.
                         }
+                        reportReferenceId(reference.identifier);
                     }
+                }
+            },
 
-                    // "never" check properties or always ignore destructuring
-                    if (properties === "never" || (ignoreDestructuring && isInsideObjectPattern(node))) {
-                        return;
-                    }
+            // Report camelcase in properties ----------------------------------
+            [[
+                "ObjectExpression > Property[computed!=true] > Identifier.key",
+                "MethodDefinition[computed!=true] > Identifier.key",
+                "PropertyDefinition[computed!=true] > Identifier.key",
+                "MethodDefinition > PrivateIdentifier.key",
+                "PropertyDefinition > PrivateIdentifier.key"
+            ]](node) {
+                if (properties === "never" || isGoodName(node.name)) {
+                    return;
+                }
+                report(node);
+            },
+            "MemberExpression[computed!=true] > Identifier.property"(node) {
+                if (
+                    properties === "never" ||
+                    !isAssignmentTarget(node.parent) || // ← ignore read-only references.
+                    isGoodName(node.name)
+                ) {
+                    return;
+                }
+                report(node);
+            },
 
-                    // don't check right hand side of AssignmentExpression to prevent duplicate warnings
-                    if (nameIsUnderscored && !ALLOWED_PARENT_TYPES.has(effectiveParent.type) && !(node.parent.right === node)) {
-                        report(node);
+            // Report camelcase in import --------------------------------------
+            ImportDeclaration(node) {
+                for (const variable of sourceCode.getDeclaredVariables(node)) {
+                    if (isGoodName(variable.name)) {
+                        continue;
                     }
+                    const id = variable.identifiers[0];
 
-                // Check if it's an import specifier
-                } else if (["ImportSpecifier", "ImportNamespaceSpecifier", "ImportDefaultSpecifier"].includes(node.parent.type)) {
-
-                    if (node.parent.type === "ImportSpecifier" && ignoreImports) {
-                        return;
+                    // Report declaration.
+                    if (!(ignoreImports && equalsToOriginalName(id))) {
+                        report(id);
                     }
 
-                    // Report only if the local imported identifier is underscored
-                    if (
-                        node.parent.local &&
-                        node.parent.local.name === node.name &&
-                        nameIsUnderscored
-                    ) {
-                        report(node);
+                    /*
+                     * For backward compatibility, report references as well.
+                     * It looks unnecessary because declarations are reported.
+                     */
+                    for (const reference of variable.references) {
+                        reportReferenceId(reference.identifier);
                     }
+                }
+            },
 
-                // Report anything that is underscored that isn't a CallExpression
-                } else if (nameIsUnderscored && !ALLOWED_PARENT_TYPES.has(effectiveParent.type)) {
-                    report(node);
+            // Report camelcase in re-export -----------------------------------
+            [[
+                "ExportAllDeclaration > Identifier.exported",
+                "ExportSpecifier > Identifier.exported"
+            ]](node) {
+                if (isGoodName(node.name)) {
+                    return;
                 }
+                report(node);
+            },
+
+            // Report camelcase in labels --------------------------------------
+            [[
+                "LabeledStatement > Identifier.label",
+
+                /*
+                 * For backward compatibility, report references as well.
+                 * It looks unnecessary because declarations are reported.
+                 */
+                "BreakStatement > Identifier.label",
+                "ContinueStatement > Identifier.label"
+            ]](node) {
+                if (isGoodName(node.name)) {
+                    return;
+                }
+                report(node);
             }
-
         };
-
     }
 };

lib/rules/capitalized-comments.js

@@ -102,2 +102,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -108,6 +109,5 @@ meta: {
         docs: {
-            description: "enforce or disallow capitalization of the first letter of a comment",
-            category: "Stylistic Issues",
+            description: "Enforce or disallow capitalization of the first letter of a comment",
             recommended: false,
-            url: "https://eslint.org/docs/rules/capitalized-comments"
+            url: "https://eslint.org/docs/latest/rules/capitalized-comments"
         },
@@ -144,3 +144,3 @@
             normalizedOptions = getAllNormalizedOptions(context.options[1]),
-            sourceCode = context.getSourceCode();
+            sourceCode = context.sourceCode;
 
@@ -191,3 +191,3 @@ createRegExpForIgnorePatterns(normalizedOptions);
                 previousTokenOrComment &&
-                ["Block", "Line"].indexOf(previousTokenOrComment.type) !== -1
+                ["Block", "Line"].includes(previousTokenOrComment.type)
             );
@@ -194,0 +194,0 @@ }

lib/rules/class-methods-use-this.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "enforce that class methods utilize `this`",
-            category: "Best Practices",
+            description: "Enforce that class methods utilize `this`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/class-methods-use-this"
+            url: "https://eslint.org/docs/latest/rules/class-methods-use-this"
         },
@@ -39,2 +39,6 @@
                     }
+                },
+                enforceForClassFields: {
+                    type: "boolean",
+                    default: true
                 }
@@ -51,2 +55,3 @@ },
         const config = Object.assign({}, context.options[0]);
+        const enforceForClassFields = config.enforceForClassFields !== false;
         const exceptMethods = new Set(config.exceptMethods || []);
@@ -57,2 +62,18 @@
         /**
+         * Push `this` used flag initialized with `false` onto the stack.
+         * @returns {void}
+         */
+        function pushContext() {
+            stack.push(false);
+        }
+
+        /**
+         * Pop `this` used flag from the stack.
+         * @returns {boolean | undefined} `this` used flag
+         */
+        function popContext() {
+            return stack.pop();
+        }
+
+        /**
          * Initializes the current context to false and pushes it onto the stack.
@@ -64,3 +85,3 @@ * These booleans represent whether 'this' has been used in the context.
         function enterFunction() {
-            stack.push(false);
+            pushContext();
         }
@@ -75,3 +96,10 @@
         function isInstanceMethod(node) {
-            return !node.static && node.kind !== "constructor" && node.type === "MethodDefinition";
+            switch (node.type) {
+                case "MethodDefinition":
+                    return !node.static && node.kind !== "constructor";
+                case "PropertyDefinition":
+                    return !node.static && enforceForClassFields;
+                default:
+                    return false;
+            }
         }
@@ -86,4 +114,15 @@
         function isIncludedInstanceMethod(node) {
-            return isInstanceMethod(node) &&
-                (node.computed || !exceptMethods.has(node.key.name));
+            if (isInstanceMethod(node)) {
+                if (node.computed) {
+                    return true;
+                }
+
+                const hashIfNeeded = node.key.type === "PrivateIdentifier" ? "#" : "";
+                const name = node.key.type === "Literal"
+                    ? astUtils.getStaticStringValue(node.key)
+                    : (node.key.name || "");
+
+                return !exceptMethods.has(hashIfNeeded + name);
+            }
+            return false;
         }
@@ -100,3 +139,3 @@
         function exitFunction(node) {
-            const methodUsesThis = stack.pop();
+            const methodUsesThis = popContext();
 
@@ -106,2 +145,3 @@ if (isIncludedInstanceMethod(node.parent) && !methodUsesThis) {
                     node,
+                    loc: astUtils.getFunctionHeadLoc(node, context.sourceCode),
                     messageId: "missingThis",
@@ -131,6 +171,28 @@ data: {
             "FunctionExpression:exit": exitFunction,
+
+            /*
+             * Class field value are implicit functions.
+             */
+            "PropertyDefinition > *.key:exit": pushContext,
+            "PropertyDefinition:exit": popContext,
+
+            /*
+             * Class static blocks are implicit functions. They aren't required to use `this`,
+             * but we have to push context so that it captures any use of `this` in the static block
+             * separately from enclosing contexts, because static blocks have their own `this` and it
+             * shouldn't count as used `this` in enclosing contexts.
+             */
+            StaticBlock: pushContext,
+            "StaticBlock:exit": popContext,
+
             ThisExpression: markThisUsed,
-            Super: markThisUsed
+            Super: markThisUsed,
+            ...(
+                enforceForClassFields && {
+                    "PropertyDefinition > ArrowFunctionExpression.value": enterFunction,
+                    "PropertyDefinition > ArrowFunctionExpression.value:exit": exitFunction
+                }
+            )
         };
     }
 };

lib/rules/comma-dangle.js

@@ -12,3 +12,2 @@ /**
 
-const lodash = require("lodash");
 const astUtils = require("./utils/ast-utils");
@@ -55,3 +54,3 @@
             exports: optionValue,
-            functions: (!ecmaVersion || ecmaVersion < 8) ? "ignore" : optionValue
+            functions: ecmaVersion < 2017 ? "ignore" : optionValue
         };
@@ -76,2 +75,3 @@ }
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -82,6 +82,5 @@ meta: {
         docs: {
-            description: "require or disallow trailing commas",
-            category: "Stylistic Issues",
+            description: "Require or disallow trailing commas",
             recommended: false,
-            url: "https://eslint.org/docs/rules/comma-dangle"
+            url: "https://eslint.org/docs/latest/rules/comma-dangle"
         },
@@ -131,3 +130,4 @@
                 }
-            ]
+            ],
+            additionalItems: false
         },
@@ -142,5 +142,5 @@
     create(context) {
-        const options = normalizeOptions(context.options[0], context.parserOptions.ecmaVersion);
+        const options = normalizeOptions(context.options[0], context.languageOptions.ecmaVersion);
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -153,19 +153,29 @@ /**
         function getLastItem(node) {
+
+            /**
+             * Returns the last element of an array
+             * @param {any[]} array The input array
+             * @returns {any} The last element
+             */
+            function last(array) {
+                return array[array.length - 1];
+            }
+
             switch (node.type) {
                 case "ObjectExpression":
                 case "ObjectPattern":
-                    return lodash.last(node.properties);
+                    return last(node.properties);
                 case "ArrayExpression":
                 case "ArrayPattern":
-                    return lodash.last(node.elements);
+                    return last(node.elements);
                 case "ImportDeclaration":
                 case "ExportNamedDeclaration":
-                    return lodash.last(node.specifiers);
+                    return last(node.specifiers);
                 case "FunctionDeclaration":
                 case "FunctionExpression":
                 case "ArrowFunctionExpression":
-                    return lodash.last(node.params);
+                    return last(node.params);
                 case "CallExpression":
                 case "NewExpression":
-                    return lodash.last(node.arguments);
+                    return last(node.arguments);
                 default:
@@ -243,4 +253,14 @@ return null;
                     messageId: "unexpected",
-                    fix(fixer) {
-                        return fixer.remove(trailingToken);
+                    *fix(fixer) {
+                        yield fixer.remove(trailingToken);
+
+                        /*
+                         * Extend the range of the fix to include surrounding tokens to ensure
+                         * that the element after which the comma is removed stays _last_.
+                         * This intentionally makes conflicts in fix ranges with rules that may be
+                         * adding or removing elements in the same autofix pass.
+                         * https://github.com/eslint/eslint/issues/15660
+                         */
+                        yield fixer.insertTextBefore(sourceCode.getTokenBefore(trailingToken), "");
+                        yield fixer.insertTextAfter(sourceCode.getTokenAfter(trailingToken), "");
                     }
@@ -283,4 +303,14 @@ });
                     messageId: "missing",
-                    fix(fixer) {
-                        return fixer.insertTextAfter(trailingToken, ",");
+                    *fix(fixer) {
+                        yield fixer.insertTextAfter(trailingToken, ",");
+
+                        /*
+                         * Extend the range of the fix to include surrounding tokens to ensure
+                         * that the element after which the comma is inserted stays _last_.
+                         * This intentionally makes conflicts in fix ranges with rules that may be
+                         * adding or removing elements in the same autofix pass.
+                         * https://github.com/eslint/eslint/issues/15660
+                         */
+                        yield fixer.insertTextBefore(trailingToken, "");
+                        yield fixer.insertTextAfter(sourceCode.getTokenAfter(trailingToken), "");
                     }
@@ -328,3 +358,3 @@ });
             never: forbidTrailingComma,
-            ignore: lodash.noop
+            ignore() {}
         };
@@ -331,0 +361,0 @@

lib/rules/comma-spacing.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "enforce consistent spacing before and after commas",
-            category: "Stylistic Issues",
+            description: "Enforce consistent spacing before and after commas",
             recommended: false,
-            url: "https://eslint.org/docs/rules/comma-spacing"
+            url: "https://eslint.org/docs/latest/rules/comma-spacing"
         },
@@ -53,3 +53,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const tokensAndComments = sourceCode.tokensAndComments;
@@ -110,34 +110,2 @@
         /**
-         * Validates the spacing around a comma token.
-         * @param {Object} tokens The tokens to be validated.
-         * @param {Token} tokens.comma The token representing the comma.
-         * @param {Token} [tokens.left] The last token before the comma.
-         * @param {Token} [tokens.right] The first token after the comma.
-         * @param {Token|ASTNode} reportItem The item to use when reporting an error.
-         * @returns {void}
-         * @private
-         */
-        function validateCommaItemSpacing(tokens, reportItem) {
-            if (tokens.left && astUtils.isTokenOnSameLine(tokens.left, tokens.comma) &&
-                    (options.before !== sourceCode.isSpaceBetweenTokens(tokens.left, tokens.comma))
-            ) {
-                report(reportItem, "before", tokens.left);
-            }
-
-            if (tokens.right && astUtils.isClosingParenToken(tokens.right)) {
-                return;
-            }
-
-            if (tokens.right && !options.after && tokens.right.type === "Line") {
-                return;
-            }
-
-            if (tokens.right && astUtils.isTokenOnSameLine(tokens.comma, tokens.right) &&
-                    (options.after !== sourceCode.isSpaceBetweenTokens(tokens.comma, tokens.right))
-            ) {
-                report(reportItem, "after", tokens.right);
-            }
-        }
-
-        /**
          * Adds null elements of the given ArrayExpression or ArrayPattern node to the ignore list.
@@ -179,14 +147,40 @@ * @param {ASTNode} node An ArrayExpression or ArrayPattern node.
 
-                    if (token && token.type === "JSXText") {
-                        return;
-                    }
-
                     const previousToken = tokensAndComments[i - 1];
                     const nextToken = tokensAndComments[i + 1];
 
-                    validateCommaItemSpacing({
-                        comma: token,
-                        left: astUtils.isCommaToken(previousToken) || commaTokensToIgnore.indexOf(token) > -1 ? null : previousToken,
-                        right: astUtils.isCommaToken(nextToken) ? null : nextToken
-                    }, token);
+                    if (
+                        previousToken &&
+                        !astUtils.isCommaToken(previousToken) && // ignore spacing between two commas
+
+                        /*
+                         * `commaTokensToIgnore` are ending commas of `null` elements (array holes/elisions).
+                         * In addition to spacing between two commas, this can also ignore:
+                         *
+                         *   - Spacing after `[` (controlled by array-bracket-spacing)
+                         *       Example: [ , ]
+                         *                 ^
+                         *   - Spacing after a comment (for backwards compatibility, this was possibly unintentional)
+                         *       Example: [a, /* * / ,]
+                         *                          ^
+                         */
+                        !commaTokensToIgnore.includes(token) &&
+
+                        astUtils.isTokenOnSameLine(previousToken, token) &&
+                        options.before !== sourceCode.isSpaceBetweenTokens(previousToken, token)
+                    ) {
+                        report(token, "before", previousToken);
+                    }
+
+                    if (
+                        nextToken &&
+                        !astUtils.isCommaToken(nextToken) && // ignore spacing between two commas
+                        !astUtils.isClosingParenToken(nextToken) && // controlled by space-in-parens
+                        !astUtils.isClosingBracketToken(nextToken) && // controlled by array-bracket-spacing
+                        !astUtils.isClosingBraceToken(nextToken) && // controlled by object-curly-spacing
+                        !(!options.after && nextToken.type === "Line") && // special case, allow space before line comment
+                        astUtils.isTokenOnSameLine(token, nextToken) &&
+                        options.after !== sourceCode.isSpaceBetweenTokens(token, nextToken)
+                    ) {
+                        report(token, "after", nextToken);
+                    }
                 });
@@ -193,0 +187,0 @@ },

lib/rules/comma-style.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "enforce consistent comma style",
-            category: "Stylistic Issues",
+            description: "Enforce consistent comma style",
             recommended: false,
-            url: "https://eslint.org/docs/rules/comma-style"
+            url: "https://eslint.org/docs/latest/rules/comma-style"
         },
@@ -56,3 +56,3 @@
         const style = context.options[0] || "last",
-            sourceCode = context.getSourceCode();
+            sourceCode = context.sourceCode;
         const exceptions = {
@@ -213,4 +213,3 @@ ArrayPattern: true,
                     if (astUtils.isCommaToken(commaToken)) {
-                        validateCommaItemSpacing(previousItemToken, commaToken,
-                            currentItemToken, reportItem);
+                        validateCommaItemSpacing(previousItemToken, commaToken, currentItemToken, reportItem);
                     }
@@ -224,2 +223,4 @@
                             : sourceCode.ast.tokens[sourceCode.ast.tokens.length - 1];
+                    } else {
+                        previousItemToken = currentItemToken;
                     }
@@ -226,0 +227,0 @@ });

lib/rules/complexity.js

@@ -13,5 +13,4 @@ /**
 
-const lodash = require("lodash");
-
 const astUtils = require("./utils/ast-utils");
+const { upperCaseFirst } = require("../shared/string-utils");
 
@@ -22,2 +21,3 @@ //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -28,6 +28,5 @@ meta: {
         docs: {
-            description: "enforce a maximum cyclomatic complexity allowed in a program",
-            category: "Best Practices",
+            description: "Enforce a maximum cyclomatic complexity allowed in a program",
             recommended: false,
-            url: "https://eslint.org/docs/rules/complexity"
+            url: "https://eslint.org/docs/latest/rules/complexity"
         },
@@ -82,58 +81,14 @@
 
-        // Using a stack to store complexity (handling nested functions)
-        const fns = [];
+        // Using a stack to store complexity per code path
+        const complexities = [];
 
         /**
-         * When parsing a new function, store it in our function stack
+         * Increase the complexity of the code path in context
          * @returns {void}
          * @private
          */
-        function startFunction() {
-            fns.push(1);
-        }
-
-        /**
-         * Evaluate the node at the end of function
-         * @param {ASTNode} node node to evaluate
-         * @returns {void}
-         * @private
-         */
-        function endFunction(node) {
-            const name = lodash.upperFirst(astUtils.getFunctionNameWithKind(node));
-            const complexity = fns.pop();
-
-            if (complexity > THRESHOLD) {
-                context.report({
-                    node,
-                    messageId: "complex",
-                    data: { name, complexity, max: THRESHOLD }
-                });
-            }
-        }
-
-        /**
-         * Increase the complexity of the function in context
-         * @returns {void}
-         * @private
-         */
         function increaseComplexity() {
-            if (fns.length) {
-                fns[fns.length - 1]++;
-            }
+            complexities[complexities.length - 1]++;
         }
 
-        /**
-         * Increase the switch complexity in context
-         * @param {ASTNode} node node to evaluate
-         * @returns {void}
-         * @private
-         */
-        function increaseSwitchComplexity(node) {
-
-            // Avoiding `default`
-            if (node.test) {
-                increaseComplexity();
-            }
-        }
-
         //--------------------------------------------------------------------------
@@ -144,9 +99,10 @@ // Public API
         return {
-            FunctionDeclaration: startFunction,
-            FunctionExpression: startFunction,
-            ArrowFunctionExpression: startFunction,
-            "FunctionDeclaration:exit": endFunction,
-            "FunctionExpression:exit": endFunction,
-            "ArrowFunctionExpression:exit": endFunction,
 
+            onCodePathStart() {
+
+                // The initial complexity is 1, representing one execution path in the CodePath
+                complexities.push(1);
+            },
+
+            // Each branching in the code adds 1 to the complexity
             CatchClause: increaseComplexity,
@@ -159,6 +115,9 @@ ConditionalExpression: increaseComplexity,
             IfStatement: increaseComplexity,
-            SwitchCase: increaseSwitchComplexity,
             WhileStatement: increaseComplexity,
             DoWhileStatement: increaseComplexity,
 
+            // Avoid `default`
+            "SwitchCase[test]": increaseComplexity,
+
+            // Logical assignment operators have short-circuiting behavior
             AssignmentExpression(node) {
@@ -168,2 +127,42 @@ if (astUtils.isLogicalAssignmentOperator(node.operator)) {
                 }
+            },
+
+            onCodePathEnd(codePath, node) {
+                const complexity = complexities.pop();
+
+                /*
+                 * This rule only evaluates complexity of functions, so "program" is excluded.
+                 * Class field initializers and class static blocks are implicit functions. Therefore,
+                 * they shouldn't contribute to the enclosing function's complexity, but their
+                 * own complexity should be evaluated.
+                 */
+                if (
+                    codePath.origin !== "function" &&
+                    codePath.origin !== "class-field-initializer" &&
+                    codePath.origin !== "class-static-block"
+                ) {
+                    return;
+                }
+
+                if (complexity > THRESHOLD) {
+                    let name;
+
+                    if (codePath.origin === "class-field-initializer") {
+                        name = "class field initializer";
+                    } else if (codePath.origin === "class-static-block") {
+                        name = "class static block";
+                    } else {
+                        name = astUtils.getFunctionNameWithKind(node);
+                    }
+
+                    context.report({
+                        node,
+                        messageId: "complex",
+                        data: {
+                            name: upperCaseFirst(name),
+                            complexity,
+                            max: THRESHOLD
+                        }
+                    });
+                }
             }
@@ -170,0 +169,0 @@ };

lib/rules/computed-property-spacing.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "enforce consistent spacing inside computed property brackets",
-            category: "Stylistic Issues",
+            description: "Enforce consistent spacing inside computed property brackets",
             recommended: false,
-            url: "https://eslint.org/docs/rules/computed-property-spacing"
+            url: "https://eslint.org/docs/latest/rules/computed-property-spacing"
         },
@@ -54,3 +54,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const propertyNameMustBeSpaced = context.options[0] === "always"; // default is "never"
@@ -201,3 +201,4 @@ const enforceForClassMembers = !context.options[1] || context.options[1].enforceForClassMembers;
         if (enforceForClassMembers) {
-            listeners.MethodDefinition = checkSpacing("key");
+            listeners.MethodDefinition =
+                listeners.PropertyDefinition = listeners.Property;
         }
@@ -204,0 +205,0 @@

lib/rules/consistent-return.js

@@ -11,4 +11,4 @@ /**
 
-const lodash = require("lodash");
 const astUtils = require("./utils/ast-utils");
+const { upperCaseFirst } = require("../shared/string-utils");
 
@@ -20,8 +20,15 @@ //------------------------------------------------------------------------------
 /**
- * Checks whether or not a given code path segment is unreachable.
- * @param {CodePathSegment} segment A CodePathSegment to check.
- * @returns {boolean} `true` if the segment is unreachable.
+ * Checks all segments in a set and returns true if all are unreachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if all segments are unreachable; false otherwise.
  */
-function isUnreachable(segment) {
-    return !segment.reachable;
+function areAllSegmentsUnreachable(segments) {
+
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return false;
+        }
+    }
+
+    return true;
 }
@@ -45,2 +52,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -51,6 +59,5 @@ meta: {
         docs: {
-            description: "require `return` statements to either always or never specify values",
-            category: "Best Practices",
+            description: "Require `return` statements to either always or never specify values",
             recommended: false,
-            url: "https://eslint.org/docs/rules/consistent-return"
+            url: "https://eslint.org/docs/latest/rules/consistent-return"
         },
@@ -95,3 +102,3 @@
             if (!funcInfo.hasReturnValue ||
-                funcInfo.codePath.currentSegments.every(isUnreachable) ||
+                areAllSegmentsUnreachable(funcInfo.currentSegments) ||
                 astUtils.isES5Constructor(node) ||
@@ -112,3 +119,3 @@ isClassConstructor(node)
                 // `=>` token
-                loc = context.getSourceCode().getTokenBefore(node.body, astUtils.isArrowToken).loc.start;
+                loc = context.sourceCode.getTokenBefore(node.body, astUtils.isArrowToken).loc;
             } else if (
@@ -120,7 +127,7 @@ node.parent.type === "MethodDefinition" ||
                 // Method name.
-                loc = node.parent.key.loc.start;
+                loc = node.parent.key.loc;
             } else {
 
                 // Function name or `function` keyword.
-                loc = (node.id || node).loc.start;
+                loc = (node.id || context.sourceCode.getFirstToken(node)).loc;
             }
@@ -151,3 +158,4 @@
                     messageId: "",
-                    node
+                    node,
+                    currentSegments: new Set()
                 };
@@ -159,2 +167,19 @@ },
 
+            onUnreachableCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+            onCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+
             // Reports a given return statement if it's inconsistent.
@@ -176,3 +201,3 @@ ReturnStatement(node) {
                             ? "Program"
-                            : lodash.upperFirst(astUtils.getFunctionNameWithKind(funcInfo.node))
+                            : upperCaseFirst(astUtils.getFunctionNameWithKind(funcInfo.node))
                     };
@@ -179,0 +204,0 @@ } else if (funcInfo.hasReturnValue !== hasReturnValue) {

lib/rules/consistent-this.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "enforce consistent naming when capturing the current execution context",
-            category: "Stylistic Issues",
+            description: "Enforce consistent naming when capturing the current execution context",
             recommended: false,
-            url: "https://eslint.org/docs/rules/consistent-this"
+            url: "https://eslint.org/docs/latest/rules/consistent-this"
         },
@@ -41,2 +41,3 @@
         let aliases = [];
+        const sourceCode = context.sourceCode;
 
@@ -53,3 +54,3 @@ if (context.options.length === 0) {
          * @param {ASTNode} node The assigning node.
-         * @param {string}  name the name of the alias that was incorrectly used.
+         * @param {string} name the name of the alias that was incorrectly used.
          * @returns {void}
@@ -72,3 +73,3 @@ */
 
-            if (aliases.indexOf(name) !== -1) {
+            if (aliases.includes(name)) {
                 if (!isThis || node.operator && node.operator !== "=") {
@@ -123,6 +124,7 @@ reportBadAssignment(node, name);
          * Check each alias to ensure that is was assigned to the correct value.
+         * @param {ASTNode} node The node that represents the scope to check.
          * @returns {void}
          */
-        function ensureWasAssigned() {
-            const scope = context.getScope();
+        function ensureWasAssigned(node) {
+            const scope = sourceCode.getScope(node);
 
@@ -129,0 +131,0 @@ aliases.forEach(alias => {

lib/rules/constructor-super.js

@@ -13,8 +13,15 @@ /**
 /**
- * Checks whether a given code path segment is reachable or not.
- * @param {CodePathSegment} segment A code path segment to check.
- * @returns {boolean} `true` if the segment is reachable.
+ * Checks all segments in a set and returns true if any are reachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if any segment is reachable; false otherwise.
  */
-function isReachable(segment) {
-    return segment.reachable;
+function isAnySegmentReachable(segments) {
+
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return true;
+        }
+    }
+
+    return false;
 }
@@ -120,2 +127,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -126,6 +134,5 @@ meta: {
         docs: {
-            description: "require `super()` calls in constructors",
-            category: "ECMAScript 6",
+            description: "Require `super()` calls in constructors",
             recommended: true,
-            url: "https://eslint.org/docs/rules/constructor-super"
+            url: "https://eslint.org/docs/latest/rules/constructor-super"
         },
@@ -216,3 +223,4 @@
                         superIsConstructor: isPossibleConstructor(superClass),
-                        codePath
+                        codePath,
+                        currentSegments: new Set()
                     };
@@ -225,3 +233,4 @@ } else {
                         superIsConstructor: false,
-                        codePath
+                        codePath,
+                        currentSegments: new Set()
                     };
@@ -269,2 +278,5 @@ }
             onCodePathSegmentStart(segment) {
+
+                funcInfo.currentSegments.add(segment);
+
                 if (!(funcInfo && funcInfo.isConstructor && funcInfo.hasExtends)) {
@@ -290,2 +302,15 @@ return;
 
+            onUnreachableCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+
             /**
@@ -354,8 +379,7 @@ * Update information of the code path segment when a code path was
                 if (funcInfo.hasExtends) {
-                    const segments = funcInfo.codePath.currentSegments;
+                    const segments = funcInfo.currentSegments;
                     let duplicate = false;
                     let info = null;
 
-                    for (let i = 0; i < segments.length; ++i) {
-                        const segment = segments[i];
+                    for (const segment of segments) {
 
@@ -385,3 +409,3 @@ if (segment.reachable) {
                     }
-                } else if (funcInfo.codePath.currentSegments.some(isReachable)) {
+                } else if (isAnySegmentReachable(funcInfo.currentSegments)) {
                     context.report({
@@ -410,6 +434,5 @@ messageId: "unexpected",
                 // Returning argument is a substitute of 'super()'.
-                const segments = funcInfo.codePath.currentSegments;
+                const segments = funcInfo.currentSegments;
 
-                for (let i = 0; i < segments.length; ++i) {
-                    const segment = segments[i];
+                for (const segment of segments) {
 
@@ -416,0 +439,0 @@ if (segment.reachable) {

lib/rules/curly.js

@@ -17,2 +17,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +24,5 @@ meta: {
         docs: {
-            description: "enforce consistent brace style for all control statements",
-            category: "Best Practices",
+            description: "Enforce consistent brace style for all control statements",
             recommended: false,
-            url: "https://eslint.org/docs/rules/curly"
+            url: "https://eslint.org/docs/latest/rules/curly"
         },
@@ -75,3 +75,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -138,11 +138,2 @@ //--------------------------------------------------------------------------
         /**
-         * Gets the `else` keyword token of a given `IfStatement` node.
-         * @param {ASTNode} node A `IfStatement` node to get.
-         * @returns {Token} The `else` keyword token.
-         */
-        function getElseKeyword(node) {
-            return node.alternate && sourceCode.getFirstTokenBetween(node.consequent, node.alternate, isElseKeywordToken);
-        }
-
-        /**
          * Determines whether the given node has an `else` keyword token as the first token after.
@@ -368,3 +359,3 @@ * @param {ASTNode} node The node to check.
                                 node,
-                                loc: (name !== "else" ? node : getElseKeyword(node)).loc.start,
+                                loc: body.loc,
                                 messageId: opts && opts.condition ? "missingCurlyAfterCondition" : "missingCurlyAfter",
@@ -379,3 +370,3 @@ data: {
                                 node,
-                                loc: (name !== "else" ? node : getElseKeyword(node)).loc.start,
+                                loc: body.loc,
                                 messageId: opts && opts.condition ? "unexpectedCurlyAfterCondition" : "unexpectedCurlyAfter",
@@ -382,0 +373,0 @@ data: {

lib/rules/default-case-last.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "enforce default clauses in switch statements to be last",
-            category: "Best Practices",
+            description: "Enforce default clauses in switch statements to be last",
             recommended: false,
-            url: "https://eslint.org/docs/rules/default-case-last"
+            url: "https://eslint.org/docs/latest/rules/default-case-last"
         },
@@ -24,0 +24,0 @@

lib/rules/default-case.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "require `default` cases in `switch` statements",
-            category: "Best Practices",
+            description: "Require `default` cases in `switch` statements",
             recommended: false,
-            url: "https://eslint.org/docs/rules/default-case"
+            url: "https://eslint.org/docs/latest/rules/default-case"
         },
@@ -47,3 +47,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -56,4 +56,4 @@ //--------------------------------------------------------------------------
          * Shortcut to get last element of array
-         * @param  {*[]} collection Array
-         * @returns {*} Last element
+         * @param {*[]} collection Array
+         * @returns {any} Last element
          */
@@ -60,0 +60,0 @@ function last(collection) {

lib/rules/default-param-last.js

@@ -8,2 +8,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -14,6 +15,5 @@ meta: {
         docs: {
-            description: "enforce default parameters to be last",
-            category: "Best Practices",
+            description: "Enforce default parameters to be last",
             recommended: false,
-            url: "https://eslint.org/docs/rules/default-param-last"
+            url: "https://eslint.org/docs/latest/rules/default-param-last"
         },
@@ -30,4 +30,4 @@
 
-        // eslint-disable-next-line jsdoc/require-description
         /**
+         * Handler for function contexts.
          * @param {ASTNode} node function node
@@ -34,0 +34,0 @@ * @returns {void}

lib/rules/dot-location.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "enforce consistent newlines before and after dots",
-            category: "Best Practices",
+            description: "Enforce consistent newlines before and after dots",
             recommended: false,
-            url: "https://eslint.org/docs/rules/dot-location"
+            url: "https://eslint.org/docs/latest/rules/dot-location"
         },
@@ -48,3 +48,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -51,0 +51,0 @@ /**

lib/rules/dot-notation.js

@@ -23,2 +23,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -29,6 +30,5 @@ meta: {
         docs: {
-            description: "enforce dot notation whenever possible",
-            category: "Best Practices",
+            description: "Enforce dot notation whenever possible",
             recommended: false,
-            url: "https://eslint.org/docs/rules/dot-notation"
+            url: "https://eslint.org/docs/latest/rules/dot-notation"
         },
@@ -64,3 +64,3 @@
         const allowKeywords = options.allowKeywords === void 0 || options.allowKeywords;
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -82,3 +82,3 @@ let allowPattern;
                 validIdentifier.test(value) &&
-                (allowKeywords || keywords.indexOf(String(value)) === -1) &&
+                (allowKeywords || !keywords.includes(String(value))) &&
                 !(allowPattern && allowPattern.test(value))
@@ -101,3 +101,3 @@ ) {
                         if (sourceCode.commentsExistBetween(leftBracket, rightBracket)) {
-                            return; // eslint-disable-line eslint-plugin/fixer-return -- false positive
+                            return;
                         }
@@ -141,4 +141,3 @@
                     node.computed &&
-                    node.property.type === "TemplateLiteral" &&
-                    node.property.expressions.length === 0
+                    astUtils.isStaticTemplateLiteral(node.property)
                 ) {
@@ -150,3 +149,4 @@ checkComputedProperty(node, node.property.quasis[0].value.cooked);
                     !node.computed &&
-                    keywords.indexOf(String(node.property.name)) !== -1
+                    node.property.type === "Identifier" &&
+                    keywords.includes(String(node.property.name))
                 ) {
@@ -164,3 +164,3 @@ context.report({
                             if (node.object.type === "Identifier" && node.object.name === "let" && !node.optional) {
-                                return; // eslint-disable-line eslint-plugin/fixer-return -- false positive
+                                return;
                             }
@@ -170,3 +170,3 @@
                             if (sourceCode.commentsExistBetween(dotToken, node.property)) {
-                                return; // eslint-disable-line eslint-plugin/fixer-return -- false positive
+                                return;
                             }
@@ -173,0 +173,0 @@

lib/rules/eol-last.js

@@ -8,11 +8,6 @@ /**
 //------------------------------------------------------------------------------
-// Requirements
-//------------------------------------------------------------------------------
-
-const lodash = require("lodash");
-
-//------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +18,5 @@ meta: {
         docs: {
-            description: "require or disallow newline at the end of files",
-            category: "Stylistic Issues",
+            description: "Require or disallow newline at the end of files",
             recommended: false,
-            url: "https://eslint.org/docs/rules/eol-last"
+            url: "https://eslint.org/docs/latest/rules/eol-last"
         },
@@ -51,6 +45,7 @@
             Program: function checkBadEOF(node) {
-                const sourceCode = context.getSourceCode(),
+                const sourceCode = context.sourceCode,
                     src = sourceCode.getText(),
+                    lastLine = sourceCode.lines[sourceCode.lines.length - 1],
                     location = {
-                        column: lodash.last(sourceCode.lines).length,
+                        column: lastLine.length,
                         line: sourceCode.lines.length
@@ -60,3 +55,3 @@ },
                     CRLF = `\r${LF}`,
-                    endsWithNewline = lodash.endsWith(src, LF);
+                    endsWithNewline = src.endsWith(LF);
 
@@ -98,6 +93,11 @@ /*
 
+                    const secondLastLine = sourceCode.lines[sourceCode.lines.length - 2];
+
                     // File is newline-terminated, but shouldn't be
                     context.report({
                         node,
-                        loc: location,
+                        loc: {
+                            start: { line: sourceCode.lines.length - 1, column: secondLastLine.length },
+                            end: { line: sourceCode.lines.length, column: 0 }
+                        },
                         messageId: "unexpected",
@@ -104,0 +104,0 @@ fix(fixer) {

lib/rules/eqeqeq.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "require the use of `===` and `!==`",
-            category: "Best Practices",
+            description: "Require the use of `===` and `!==`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/eqeqeq"
+            url: "https://eslint.org/docs/latest/rules/eqeqeq"
         },
@@ -73,3 +73,3 @@
         const options = context.options[1] || {};
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -84,3 +84,3 @@ const nullOption = (config === "always")
          * Checks if an expression is a typeof expression
-         * @param  {ASTNode} node The node to check
+         * @param {ASTNode} node The node to check
          * @returns {boolean} if the node is a typeof expression
@@ -87,0 +87,0 @@ */

lib/rules/for-direction.js

@@ -9,5 +9,12 @@ /**
 //------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { getStaticValue } = require("@eslint-community/eslint-utils");
+
+//------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +25,5 @@ meta: {
         docs: {
-            description: "enforce \"for\" loop update clause moving the counter in the right direction.",
-            category: "Possible Errors",
+            description: "Enforce \"for\" loop update clause moving the counter in the right direction",
             recommended: true,
-            url: "https://eslint.org/docs/rules/for-direction"
+            url: "https://eslint.org/docs/latest/rules/for-direction"
         },
@@ -34,2 +40,3 @@
     create(context) {
+        const { sourceCode } = context;
 
@@ -52,13 +59,13 @@ /**
          * @param {int} dir expected direction that could either be turned around or invalidated
-         * @returns {int} return dir, the negated dir or zero if it's not clear for identifiers
+         * @returns {int} return dir, the negated dir, or zero if the counter does not change or the direction is not clear
          */
         function getRightDirection(update, dir) {
-            if (update.right.type === "UnaryExpression") {
-                if (update.right.operator === "-") {
-                    return -dir;
-                }
-            } else if (update.right.type === "Identifier") {
-                return 0;
+            const staticValue = getStaticValue(update.right, sourceCode.getScope(update));
+
+            if (staticValue && ["bigint", "boolean", "number"].includes(typeof staticValue.value)) {
+                const sign = Math.sign(Number(staticValue.value)) || 0; // convert NaN to 0
+
+                return dir * sign;
             }
-            return dir;
+            return 0;
         }
@@ -65,0 +72,0 @@

lib/rules/func-call-spacing.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "require or disallow spacing between function identifiers and their invocations",
-            category: "Stylistic Issues",
+            description: "Require or disallow spacing between function identifiers and their invocations",
             recommended: false,
-            url: "https://eslint.org/docs/rules/func-call-spacing"
+            url: "https://eslint.org/docs/latest/rules/func-call-spacing"
         },
@@ -78,3 +78,3 @@
         const allowNewlines = !never && context.options[1] && context.options[1].allowNewlines;
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const text = sourceCode.getText();
@@ -81,0 +81,0 @@

lib/rules/func-name-matching.js

@@ -47,3 +47,3 @@ /**
 function isIdentifier(name, ecmaVersion) {
-    if (ecmaVersion >= 6) {
+    if (ecmaVersion >= 2015) {
         return esutils.keyword.isIdentifierES6(name);
@@ -72,2 +72,3 @@ }
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -78,6 +79,5 @@ meta: {
         docs: {
-            description: "require function names to match the name of the variable or property to which they are assigned",
-            category: "Stylistic Issues",
+            description: "Require function names to match the name of the variable or property to which they are assigned",
             recommended: false,
-            url: "https://eslint.org/docs/rules/func-name-matching"
+            url: "https://eslint.org/docs/latest/rules/func-name-matching"
         },
@@ -110,3 +110,3 @@
         const includeModuleExports = options.includeCommonJSModuleExports;
-        const ecmaVersion = context.parserOptions && context.parserOptions.ecmaVersion ? context.parserOptions.ecmaVersion : 5;
+        const ecmaVersion = context.languageOptions.ecmaVersion;
 
@@ -203,3 +203,3 @@ /**
 
-                if (node.right.id && isIdentifier(name) && shouldWarn(name, node.right.id.name)) {
+                if (node.right.id && name && isIdentifier(name) && shouldWarn(name, node.right.id.name)) {
                     report(node, name, node.right.id.name, isProp);
@@ -209,12 +209,16 @@ }
 
-            Property(node) {
-                if (node.value.type !== "FunctionExpression" || !node.value.id || node.computed && !isStringLiteral(node.key)) {
+            "Property, PropertyDefinition[value]"(node) {
+                if (!(node.value.type === "FunctionExpression" && node.value.id)) {
                     return;
                 }
 
-                if (node.key.type === "Identifier") {
+                if (node.key.type === "Identifier" && !node.computed) {
                     const functionName = node.value.id.name;
                     let propertyName = node.key.name;
 
-                    if (considerPropertyDescriptor && propertyName === "value") {
+                    if (
+                        considerPropertyDescriptor &&
+                        propertyName === "value" &&
+                        node.parent.type === "ObjectExpression"
+                    ) {
                         if (isPropertyCall("Object", "defineProperty", node.parent.parent) || isPropertyCall("Reflect", "defineProperty", node.parent.parent)) {
@@ -221,0 +225,0 @@ const property = node.parent.parent.arguments[1];

lib/rules/func-names.js

@@ -27,2 +27,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -33,6 +34,5 @@ meta: {
         docs: {
-            description: "require or disallow named `function` expressions",
-            category: "Stylistic Issues",
+            description: "Require or disallow named `function` expressions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/func-names"
+            url: "https://eslint.org/docs/latest/rules/func-names"
         },
@@ -74,3 +74,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -124,2 +124,3 @@ /**
                 (parent.type === "Property" && parent.value === node) ||
+                (parent.type === "PropertyDefinition" && parent.value === node) ||
                 (parent.type === "AssignmentExpression" && parent.left.type === "Identifier" && parent.right === node) ||
@@ -165,3 +166,3 @@ (parent.type === "AssignmentPattern" && parent.left.type === "Identifier" && parent.right === node);
             // Skip recursive functions.
-            const nameVar = context.getDeclaredVariables(node)[0];
+            const nameVar = sourceCode.getDeclaredVariables(node)[0];
 
@@ -168,0 +169,0 @@ if (isFunctionName(nameVar) && nameVar.references.length > 0) {

lib/rules/func-style.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "enforce the consistent use of either `function` declarations or expressions",
-            category: "Stylistic Issues",
+            description: "Enforce the consistent use of either `function` declarations or expressions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/func-style"
+            url: "https://eslint.org/docs/latest/rules/func-style"
         },
@@ -23,0 +23,0 @@

lib/rules/function-call-argument-newline.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "enforce line breaks between arguments of a function call",
-            category: "Stylistic Issues",
+            description: "Enforce line breaks between arguments of a function call",
             recommended: false,
-            url: "https://eslint.org/docs/rules/function-call-argument-newline"
+            url: "https://eslint.org/docs/latest/rules/function-call-argument-newline"
         },
@@ -40,3 +40,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -43,0 +43,0 @@ const checkers = {

lib/rules/function-paren-newline.js

@@ -17,2 +17,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +24,5 @@ meta: {
         docs: {
-            description: "enforce consistent line breaks inside function parentheses",
-            category: "Stylistic Issues",
+            description: "Enforce consistent line breaks inside function parentheses",
             recommended: false,
-            url: "https://eslint.org/docs/rules/function-paren-newline"
+            url: "https://eslint.org/docs/latest/rules/function-paren-newline"
         },
@@ -62,3 +62,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const rawOption = context.options[0] || "multiline";
@@ -189,2 +189,3 @@ const multilineOption = rawOption === "multiline";
          * @param {ASTNode} node The node with parens
+         * @throws {TypeError} Unexpected node type.
          * @returns {Object} An object with keys `leftParen` for the left paren token, and `rightParen` for the right paren token.
@@ -197,6 +198,9 @@ * Can also return `null` if an expression has no parens (e.g. a NewExpression with no arguments, or an ArrowFunctionExpression
                 case "NewExpression":
-                    if (!node.arguments.length && !(
-                        astUtils.isOpeningParenToken(sourceCode.getLastToken(node, { skip: 1 })) &&
-                        astUtils.isClosingParenToken(sourceCode.getLastToken(node))
-                    )) {
+                    if (!node.arguments.length &&
+                        !(
+                            astUtils.isOpeningParenToken(sourceCode.getLastToken(node, { skip: 1 })) &&
+                            astUtils.isClosingParenToken(sourceCode.getLastToken(node)) &&
+                            node.callee.range[1] < node.range[1]
+                        )
+                    ) {
 
@@ -234,5 +238,9 @@ // If the NewExpression does not have parens (e.g. `new Foo`), return null.
 
+                    const rightParen = node.params.length
+                        ? sourceCode.getTokenAfter(node.params[node.params.length - 1], astUtils.isClosingParenToken)
+                        : sourceCode.getTokenAfter(firstToken);
+
                     return {
                         leftParen: firstToken,
-                        rightParen: sourceCode.getTokenBefore(node.body, astUtils.isClosingParenToken)
+                        rightParen
                     };
@@ -239,0 +247,0 @@ }

lib/rules/generator-star-spacing.js

@@ -28,2 +28,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -34,6 +35,5 @@ meta: {
         docs: {
-            description: "enforce consistent spacing around `*` operators in generator functions",
-            category: "ECMAScript 6",
+            description: "Enforce consistent spacing around `*` operators in generator functions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/generator-star-spacing"
+            url: "https://eslint.org/docs/latest/rules/generator-star-spacing"
         },
@@ -107,3 +107,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -110,0 +110,0 @@ /**

lib/rules/getter-return.js

@@ -17,11 +17,19 @@ /**
 //------------------------------------------------------------------------------
+
 const TARGET_NODE_TYPE = /^(?:Arrow)?FunctionExpression$/u;
 
 /**
- * Checks a given code path segment is reachable.
- * @param {CodePathSegment} segment A segment to check.
- * @returns {boolean} `true` if the segment is reachable.
+ * Checks all segments in a set and returns true if any are reachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if any segment is reachable; false otherwise.
  */
-function isReachable(segment) {
-    return segment.reachable;
+function isAnySegmentReachable(segments) {
+
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return true;
+        }
+    }
+
+    return false;
 }
@@ -33,2 +41,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -39,6 +48,5 @@ meta: {
         docs: {
-            description: "enforce `return` statements in getters",
-            category: "Possible Errors",
+            description: "Enforce `return` statements in getters",
             recommended: true,
-            url: "https://eslint.org/docs/rules/getter-return"
+            url: "https://eslint.org/docs/latest/rules/getter-return"
         },
@@ -70,3 +78,3 @@
         const options = context.options[0] || { allowImplicit: false };
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -78,3 +86,4 @@ let funcInfo = {
             shouldCheck: false,
-            node: null
+            node: null,
+            currentSegments: []
         };
@@ -93,3 +102,3 @@
             if (funcInfo.shouldCheck &&
-                funcInfo.codePath.currentSegments.some(isReachable)
+                isAnySegmentReachable(funcInfo.currentSegments)
             ) {
@@ -121,14 +130,20 @@ context.report({
 
-                    // Object.defineProperty()
-                    if (parent.parent.parent.type === "CallExpression" &&
-                        astUtils.getStaticPropertyName(parent.parent.parent.callee) === "defineProperty") {
-                        return true;
+                    // Object.defineProperty() or Reflect.defineProperty()
+                    if (parent.parent.parent.type === "CallExpression") {
+                        const callNode = parent.parent.parent.callee;
+
+                        if (astUtils.isSpecificMemberAccess(callNode, "Object", "defineProperty") ||
+                            astUtils.isSpecificMemberAccess(callNode, "Reflect", "defineProperty")) {
+                            return true;
+                        }
                     }
 
-                    // Object.defineProperties()
+                    // Object.defineProperties() or Object.create()
                     if (parent.parent.parent.type === "Property" &&
                         parent.parent.parent.parent.type === "ObjectExpression" &&
-                        parent.parent.parent.parent.parent.type === "CallExpression" &&
-                        astUtils.getStaticPropertyName(parent.parent.parent.parent.parent.callee) === "defineProperties") {
-                        return true;
+                        parent.parent.parent.parent.parent.type === "CallExpression") {
+                        const callNode = parent.parent.parent.parent.parent.callee;
+
+                        return astUtils.isSpecificMemberAccess(callNode, "Object", "defineProperties") ||
+                               astUtils.isSpecificMemberAccess(callNode, "Object", "create");
                     }
@@ -148,3 +163,4 @@ }
                     shouldCheck: isGetter(node),
-                    node
+                    node,
+                    currentSegments: new Set()
                 };
@@ -157,3 +173,18 @@ },
             },
+            onUnreachableCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
 
+            onUnreachableCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+            onCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
             // Checks the return statement is valid.
@@ -160,0 +191,0 @@ ReturnStatement(node) {

lib/rules/global-require.js

 /**
  * @fileoverview Rule for disallowing require() outside of the top-level module context
  * @author Jamund Ferguson
+ * @deprecated in ESLint v7.0.0
  */
@@ -8,3 +9,3 @@
 
-const ACCEPTABLE_PARENTS = [
+const ACCEPTABLE_PARENTS = new Set([
     "AssignmentExpression",
@@ -19,3 +20,3 @@ "VariableDeclarator",
     "ChainExpression"
-];
+]);
 
@@ -32,6 +33,7 @@ /**
 
-    /* istanbul ignore else: correctly returns null */
     if (references.length === 1) {
         return references[0];
     }
+
+    /* c8 ignore next */
     return null;
@@ -53,2 +55,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -63,6 +66,5 @@ meta: {
         docs: {
-            description: "require `require()` calls to be placed at top-level module scope",
-            category: "Node.js and CommonJS",
+            description: "Require `require()` calls to be placed at top-level module scope",
             recommended: false,
-            url: "https://eslint.org/docs/rules/global-require"
+            url: "https://eslint.org/docs/latest/rules/global-require"
         },
@@ -77,8 +79,10 @@
     create(context) {
+        const sourceCode = context.sourceCode;
+
         return {
             CallExpression(node) {
-                const currentScope = context.getScope();
+                const currentScope = sourceCode.getScope(node);
 
                 if (node.callee.name === "require" && !isShadowed(currentScope, node.callee)) {
-                    const isGoodRequire = context.getAncestors().every(parent => ACCEPTABLE_PARENTS.indexOf(parent.type) > -1);
+                    const isGoodRequire = sourceCode.getAncestors(node).every(parent => ACCEPTABLE_PARENTS.has(parent.type));
 
@@ -85,0 +89,0 @@ if (!isGoodRequire) {

lib/rules/grouped-accessor-pairs.js

@@ -93,2 +93,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -99,6 +100,5 @@ meta: {
         docs: {
-            description: "require grouped accessor pairs in object literals and classes",
-            category: "Best Practices",
+            description: "Require grouped accessor pairs in object literals and classes",
             recommended: false,
-            url: "https://eslint.org/docs/rules/grouped-accessor-pairs"
+            url: "https://eslint.org/docs/latest/rules/grouped-accessor-pairs"
         },
@@ -120,3 +120,3 @@
         const order = context.options[0] || "anyOrder";
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -144,39 +144,2 @@ /**
         /**
-         * Creates a new `AccessorData` object for the given getter or setter node.
-         * @param {ASTNode} node A getter or setter node.
-         * @returns {AccessorData} New `AccessorData` object that contains the given node.
-         * @private
-         */
-        function createAccessorData(node) {
-            const name = astUtils.getStaticPropertyName(node);
-            const key = (name !== null) ? name : sourceCode.getTokens(node.key);
-
-            return {
-                key,
-                getters: node.kind === "get" ? [node] : [],
-                setters: node.kind === "set" ? [node] : []
-            };
-        }
-
-        /**
-         * Merges the given `AccessorData` object into the given accessors list.
-         * @param {AccessorData[]} accessors The list to merge into.
-         * @param {AccessorData} accessorData The object to merge.
-         * @returns {AccessorData[]} The same instance with the merged object.
-         * @private
-         */
-        function mergeAccessorData(accessors, accessorData) {
-            const equalKeyElement = accessors.find(a => areEqualKeys(a.key, accessorData.key));
-
-            if (equalKeyElement) {
-                equalKeyElement.getters.push(...accessorData.getters);
-                equalKeyElement.setters.push(...accessorData.setters);
-            } else {
-                accessors.push(accessorData);
-            }
-
-            return accessors;
-        }
-
-        /**
          * Checks accessor pairs in the given list of nodes.
@@ -189,8 +152,36 @@ * @param {ASTNode[]} nodes The list to check.
         function checkList(nodes, shouldCheck) {
-            const accessors = nodes
-                .filter(shouldCheck)
-                .filter(isAccessorKind)
-                .map(createAccessorData)
-                .reduce(mergeAccessorData, []);
+            const accessors = [];
+            let found = false;
 
+            for (let i = 0; i < nodes.length; i++) {
+                const node = nodes[i];
+
+                if (shouldCheck(node) && isAccessorKind(node)) {
+
+                    // Creates a new `AccessorData` object for the given getter or setter node.
+                    const name = astUtils.getStaticPropertyName(node);
+                    const key = (name !== null) ? name : sourceCode.getTokens(node.key);
+
+                    // Merges the given `AccessorData` object into the given accessors list.
+                    for (let j = 0; j < accessors.length; j++) {
+                        const accessor = accessors[j];
+
+                        if (areEqualKeys(accessor.key, key)) {
+                            accessor.getters.push(...node.kind === "get" ? [node] : []);
+                            accessor.setters.push(...node.kind === "set" ? [node] : []);
+                            found = true;
+                            break;
+                        }
+                    }
+                    if (!found) {
+                        accessors.push({
+                            key,
+                            getters: node.kind === "get" ? [node] : [],
+                            setters: node.kind === "set" ? [node] : []
+                        });
+                    }
+                    found = false;
+                }
+            }
+
             for (const { getters, setters } of accessors) {
@@ -197,0 +188,0 @@

lib/rules/guard-for-in.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "require `for-in` loops to include an `if` statement",
-            category: "Best Practices",
+            description: "Require `for-in` loops to include an `if` statement",
             recommended: false,
-            url: "https://eslint.org/docs/rules/guard-for-in"
+            url: "https://eslint.org/docs/latest/rules/guard-for-in"
         },
@@ -24,0 +24,0 @@

lib/rules/handle-callback-err.js

 /**
  * @fileoverview Ensure handling of errors when we know they exist.
  * @author Jamund Ferguson
+ * @deprecated in ESLint v7.0.0
  */
@@ -12,2 +13,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -22,6 +24,5 @@ meta: {
         docs: {
-            description: "require error handling in callbacks",
-            category: "Node.js and CommonJS",
+            description: "Require error handling in callbacks",
             recommended: false,
-            url: "https://eslint.org/docs/rules/handle-callback-err"
+            url: "https://eslint.org/docs/latest/rules/handle-callback-err"
         },
@@ -42,2 +43,3 @@
         const errorArgument = context.options[0] || "err";
+        const sourceCode = context.sourceCode;
 
@@ -84,3 +86,3 @@ /**
         function checkForError(node) {
-            const scope = context.getScope(),
+            const scope = sourceCode.getScope(node),
                 parameters = getParameters(scope),
@@ -87,0 +89,0 @@ firstParameter = parameters[0];

lib/rules/id-blacklist.js

@@ -5,2 +5,3 @@ /**
  * @author Keith Cirkel (http://keithcirkel.co.uk)
+ * @deprecated in ESLint v7.5.0
  */
@@ -113,2 +114,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -122,6 +124,5 @@ meta: {
         docs: {
-            description: "disallow specified identifiers",
-            category: "Stylistic Issues",
+            description: "Disallow specified identifiers",
             recommended: false,
-            url: "https://eslint.org/docs/rules/id-blacklist"
+            url: "https://eslint.org/docs/latest/rules/id-blacklist"
         },
@@ -145,2 +146,3 @@
         const reportedNodes = new Set();
+        const sourceCode = context.sourceCode;
 
@@ -212,3 +214,13 @@ let globalScope;
         function report(node) {
-            if (!reportedNodes.has(node)) {
+
+            /*
+             * We used the range instead of the node because it's possible
+             * for the same identifier to be represented by two different
+             * nodes, with the most clear example being shorthand properties:
+             * { foo }
+             * In this case, "foo" is represented by one node for the name
+             * and one for the value. The only way to know they are the same
+             * is to look at the range.
+             */
+            if (!reportedNodes.has(node.range.toString())) {
                 context.report({
@@ -221,4 +233,5 @@ node,
                 });
-                reportedNodes.add(node);
+                reportedNodes.add(node.range.toString());
             }
+
         }
@@ -228,4 +241,4 @@
 
-            Program() {
-                globalScope = context.getScope();
+            Program(node) {
+                globalScope = sourceCode.getScope(node);
             },
@@ -232,0 +245,0 @@

lib/rules/id-denylist.js

@@ -72,10 +72,10 @@ /**
 /**
- * Checks whether the given node is a renamed identifier node in an ObjectPattern destructuring.
+ * Checks whether the given node is an ObjectPattern destructuring.
  *
  * Examples:
- * const { a : b } = foo; // node `a` is renamed node.
+ * const { a : b } = foo;
  * @param {ASTNode} node `Identifier` node to check.
- * @returns {boolean} `true` if the node is a renamed node in an ObjectPattern destructuring.
+ * @returns {boolean} `true` if the node is in an ObjectPattern destructuring.
  */
-function isRenamedInDestructuring(node) {
+function isPropertyNameInDestructuring(node) {
     const parent = node.parent;
@@ -88,3 +88,2 @@
             parent.parent.type === "ObjectPattern" &&
-            parent.value !== node &&
             parent.key === node
@@ -95,17 +94,2 @@ )
 
-/**
- * Checks whether the given node represents shorthand definition of a property in an object literal.
- * @param {ASTNode} node `Identifier` node to check.
- * @returns {boolean} `true` if the node is a shorthand property definition.
- */
-function isShorthandPropertyDefinition(node) {
-    const parent = node.parent;
-
-    return (
-        parent.type === "Property" &&
-        parent.parent.type === "ObjectExpression" &&
-        parent.shorthand
-    );
-}
-
 //------------------------------------------------------------------------------
@@ -115,2 +99,3 @@ // Rule Definition
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -121,6 +106,5 @@ meta: {
         docs: {
-            description: "disallow specified identifiers",
-            category: "Stylistic Issues",
+            description: "Disallow specified identifiers",
             recommended: false,
-            url: "https://eslint.org/docs/rules/id-denylist"
+            url: "https://eslint.org/docs/latest/rules/id-denylist"
         },
@@ -136,3 +120,4 @@
         messages: {
-            restricted: "Identifier '{{name}}' is restricted."
+            restricted: "Identifier '{{name}}' is restricted.",
+            restrictedPrivate: "Identifier '#{{name}}' is restricted."
         }
@@ -145,2 +130,3 @@ },
         const reportedNodes = new Set();
+        const sourceCode = context.sourceCode;
 
@@ -197,7 +183,4 @@ let globalScope;
                 !isRenamedImport(node) &&
-                !isRenamedInDestructuring(node) &&
-                !(
-                    isReferenceToGlobalVariable(node) &&
-                    !isShorthandPropertyDefinition(node)
-                )
+                !isPropertyNameInDestructuring(node) &&
+                !isReferenceToGlobalVariable(node)
             );
@@ -213,6 +196,18 @@ }
         function report(node) {
-            if (!reportedNodes.has(node)) {
+
+            /*
+             * We used the range instead of the node because it's possible
+             * for the same identifier to be represented by two different
+             * nodes, with the most clear example being shorthand properties:
+             * { foo }
+             * In this case, "foo" is represented by one node for the name
+             * and one for the value. The only way to know they are the same
+             * is to look at the range.
+             */
+            if (!reportedNodes.has(node.range.toString())) {
+                const isPrivate = node.type === "PrivateIdentifier";
+
                 context.report({
                     node,
-                    messageId: "restricted",
+                    messageId: isPrivate ? "restrictedPrivate" : "restricted",
                     data: {
@@ -222,3 +217,3 @@ name: node.name
                 });
-                reportedNodes.add(node);
+                reportedNodes.add(node.range.toString());
             }
@@ -229,7 +224,10 @@ }
 
-            Program() {
-                globalScope = context.getScope();
+            Program(node) {
+                globalScope = sourceCode.getScope(node);
             },
 
-            Identifier(node) {
+            [[
+                "Identifier",
+                "PrivateIdentifier"
+            ]](node) {
                 if (isRestricted(node.name) && shouldCheck(node)) {
@@ -236,0 +234,0 @@ report(node);

lib/rules/id-length.js

@@ -10,5 +10,12 @@ /**
 //------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { getGraphemeCount } = require("../shared/string-utils");
+
+//------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +26,5 @@ meta: {
         docs: {
-            description: "enforce minimum and maximum identifier lengths",
-            category: "Stylistic Issues",
+            description: "Enforce minimum and maximum identifier lengths",
             recommended: false,
-            url: "https://eslint.org/docs/rules/id-length"
+            url: "https://eslint.org/docs/latest/rules/id-length"
         },
@@ -60,3 +66,5 @@
             tooShort: "Identifier name '{{name}}' is too short (< {{min}}).",
-            tooLong: "Identifier name '{{name}}' is too long (> {{max}})."
+            tooShortPrivate: "Identifier name '#{{name}}' is too short (< {{min}}).",
+            tooLong: "Identifier name '{{name}}' is too long (> {{max}}).",
+            tooLongPrivate: "Identifier name #'{{name}}' is too long (> {{max}})."
         }
@@ -72,3 +80,3 @@ },
         const exceptionPatterns = (options.exceptionPatterns || []).map(pattern => new RegExp(pattern, "u"));
-        const reportedNode = new Set();
+        const reportedNodes = new Set();
 
@@ -106,8 +114,10 @@ /**
                 if (parent.parent.type === "ObjectPattern") {
+                    const isKeyAndValueSame = parent.value.name === parent.key.name;
+
                     return (
-                        parent.value !== parent.key && parent.value === node ||
-                        parent.value === parent.key && parent.key === node && properties
+                        !isKeyAndValueSame && parent.value === node ||
+                        isKeyAndValueSame && parent.key === node && properties
                     );
                 }
-                return properties && !parent.computed && parent.key === node;
+                return properties && !parent.computed && parent.key.name === node.name;
             },
@@ -121,2 +131,3 @@ ImportDefaultSpecifier: true,
             MethodDefinition: true,
+            PropertyDefinition: true,
             CatchClause: true,
@@ -127,9 +138,14 @@ ArrayPattern: true
         return {
-            Identifier(node) {
+            [[
+                "Identifier",
+                "PrivateIdentifier"
+            ]](node) {
                 const name = node.name;
                 const parent = node.parent;
 
-                const isShort = name.length < minLength;
-                const isLong = name.length > maxLength;
+                const nameLength = getGraphemeCount(name);
 
+                const isShort = nameLength < minLength;
+                const isLong = nameLength > maxLength;
+
                 if (!(isShort || isLong) || exceptions.has(name) || matchesExceptionPattern(name)) {
@@ -141,7 +157,23 @@ return; // Nothing to report
 
-                if (isValidExpression && !reportedNode.has(node) && (isValidExpression === true || isValidExpression(parent, node))) {
-                    reportedNode.add(node);
+                /*
+                 * We used the range instead of the node because it's possible
+                 * for the same identifier to be represented by two different
+                 * nodes, with the most clear example being shorthand properties:
+                 * { foo }
+                 * In this case, "foo" is represented by one node for the name
+                 * and one for the value. The only way to know they are the same
+                 * is to look at the range.
+                 */
+                if (isValidExpression && !reportedNodes.has(node.range.toString()) && (isValidExpression === true || isValidExpression(parent, node))) {
+                    reportedNodes.add(node.range.toString());
+
+                    let messageId = isShort ? "tooShort" : "tooLong";
+
+                    if (node.type === "PrivateIdentifier") {
+                        messageId += "Private";
+                    }
+
                     context.report({
                         node,
-                        messageId: isShort ? "tooShort" : "tooLong",
+                        messageId,
                         data: { name, min: minLength, max: maxLength }
@@ -148,0 +180,0 @@ });

lib/rules/id-match.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "require identifiers to match a specified regular expression",
-            category: "Stylistic Issues",
+            description: "Require identifiers to match a specified regular expression",
             recommended: false,
-            url: "https://eslint.org/docs/rules/id-match"
+            url: "https://eslint.org/docs/latest/rules/id-match"
         },
@@ -36,2 +36,6 @@
                     },
+                    classFields: {
+                        type: "boolean",
+                        default: false
+                    },
                     onlyDeclarations: {
@@ -50,3 +54,4 @@ type: "boolean",
         messages: {
-            notMatch: "Identifier '{{name}}' does not match the pattern '{{pattern}}'."
+            notMatch: "Identifier '{{name}}' does not match the pattern '{{pattern}}'.",
+            notMatchPrivate: "Identifier '#{{name}}' does not match the pattern '{{pattern}}'."
         }
@@ -64,6 +69,10 @@ },
         const options = context.options[1] || {},
-            properties = !!options.properties,
+            checkProperties = !!options.properties,
+            checkClassFields = !!options.classFields,
             onlyDeclarations = !!options.onlyDeclarations,
             ignoreDestructuring = !!options.ignoreDestructuring;
 
+        const sourceCode = context.sourceCode;
+        let globalScope;
+
         //--------------------------------------------------------------------------
@@ -74,3 +83,3 @@ // Helpers
         // contains reported nodes to avoid reporting twice on destructuring with shorthand notation
-        const reported = new Map();
+        const reportedNodes = new Set();
         const ALLOWED_PARENT_TYPES = new Set(["CallExpression", "NewExpression"]);
@@ -81,2 +90,15 @@ const DECLARATION_TYPES = new Set(["FunctionDeclaration", "VariableDeclarator"]);
         /**
+         * Checks whether the given node represents a reference to a global variable that is not declared in the source code.
+         * These identifiers will be allowed, as it is assumed that user has no control over the names of external global variables.
+         * @param {ASTNode} node `Identifier` node to check.
+         * @returns {boolean} `true` if the node is a reference to a global variable.
+         */
+        function isReferenceToGlobalVariable(node) {
+            const variable = globalScope.set.get(node.name);
+
+            return variable && variable.defs.length === 0 &&
+                variable.references.some(ref => ref.identifier === node);
+        }
+
+        /**
          * Checks if a string matches the provided pattern
@@ -130,6 +152,20 @@ * @param {string} name The string to check.
         function report(node) {
-            if (!reported.has(node)) {
+
+            /*
+             * We used the range instead of the node because it's possible
+             * for the same identifier to be represented by two different
+             * nodes, with the most clear example being shorthand properties:
+             * { foo }
+             * In this case, "foo" is represented by one node for the name
+             * and one for the value. The only way to know they are the same
+             * is to look at the range.
+             */
+            if (!reportedNodes.has(node.range.toString())) {
+
+                const messageId = (node.type === "PrivateIdentifier")
+                    ? "notMatchPrivate" : "notMatch";
+
                 context.report({
                     node,
-                    messageId: "notMatch",
+                    messageId,
                     data: {
@@ -140,3 +176,3 @@ name: node.name,
                 });
-                reported.set(node, true);
+                reportedNodes.add(node.range.toString());
             }
@@ -147,2 +183,6 @@ }
 
+            Program(node) {
+                globalScope = sourceCode.getScope(node);
+            },
+
             Identifier(node) {
@@ -153,5 +193,9 @@ const name = node.name,
 
+                if (isReferenceToGlobalVariable(node)) {
+                    return;
+                }
+
                 if (parent.type === "MemberExpression") {
 
-                    if (!properties) {
+                    if (!checkProperties) {
                         return;
@@ -182,2 +226,13 @@ }
 
+                // For https://github.com/eslint/eslint/issues/15123
+                } else if (
+                    parent.type === "Property" &&
+                    parent.parent.type === "ObjectExpression" &&
+                    parent.key === node &&
+                    !parent.computed
+                ) {
+                    if (checkProperties && isInvalid(name)) {
+                        report(node);
+                    }
+
                 /*
@@ -191,4 +246,3 @@ * Properties have their own rules, and
                     if (parent.parent && parent.parent.type === "ObjectPattern") {
-                        if (parent.shorthand && parent.value.left && isInvalid(name)) {
-
+                        if (!ignoreDestructuring && parent.shorthand && parent.value.left && isInvalid(name)) {
                             report(node);
@@ -213,3 +267,3 @@ }
                     // never check properties or always ignore destructuring
-                    if (!properties || (ignoreDestructuring && isInsideObjectPattern(node))) {
+                    if ((!checkProperties && !parent.computed) || (ignoreDestructuring && isInsideObjectPattern(node))) {
                         return;
@@ -231,2 +285,8 @@ }
 
+                } else if (parent.type === "PropertyDefinition") {
+
+                    if (checkClassFields && isInvalid(name)) {
+                        report(node);
+                    }
+
                 // Report anything that is invalid that isn't a CallExpression
@@ -236,2 +296,15 @@ } else if (shouldReport(effectiveParent, name)) {
                 }
+            },
+
+            "PrivateIdentifier"(node) {
+
+                const isClassField = node.parent.type === "PropertyDefinition";
+
+                if (isClassField && !checkClassFields) {
+                    return;
+                }
+
+                if (isInvalid(node.name)) {
+                    report(node);
+                }
             }
@@ -238,0 +311,0 @@

lib/rules/implicit-arrow-linebreak.js

@@ -12,2 +12,3 @@ /**
 //------------------------------------------------------------------------------
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "enforce the location of arrow function bodies",
-            category: "Stylistic Issues",
+            description: "Enforce the location of arrow function bodies",
             recommended: false,
-            url: "https://eslint.org/docs/rules/implicit-arrow-linebreak"
+            url: "https://eslint.org/docs/latest/rules/implicit-arrow-linebreak"
         },
@@ -39,3 +39,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const option = context.options[0] || "beside";
@@ -42,0 +42,0 @@

lib/rules/indent-legacy.js

@@ -7,2 +7,3 @@ /**
  * @author Gyandeep Singh
+ * @deprecated in ESLint v4.0.0
  */
@@ -21,4 +22,5 @@
 //------------------------------------------------------------------------------
-
-/* istanbul ignore next: this rule has known coverage issues, but it's deprecated and shouldn't be updated in the future anyway. */
+// this rule has known coverage issues, but it's deprecated and shouldn't be updated in the future anyway.
+/* c8 ignore next */
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -29,6 +31,5 @@ meta: {
         docs: {
-            description: "enforce consistent indentation",
-            category: "Stylistic Issues",
+            description: "Enforce consistent indentation",
             recommended: false,
-            url: "https://eslint.org/docs/rules/indent-legacy"
+            url: "https://eslint.org/docs/latest/rules/indent-legacy"
         },
@@ -211,3 +212,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -218,6 +219,6 @@ if (context.options.length) {
                 indentType = "tab";
-            } else /* istanbul ignore else : this will be caught by options validation */ if (typeof context.options[0] === "number") {
+            } else /* c8 ignore start */ if (typeof context.options[0] === "number") {
                 indentSize = context.options[0];
                 indentType = "space";
-            }
+            }/* c8 ignore stop */
 
@@ -760,3 +761,3 @@ if (context.options[1]) {
                             } else if (options.CallExpression.arguments === "first") {
-                                if (parent.arguments.indexOf(node) !== -1) {
+                                if (parent.arguments.includes(node)) {
                                     nodeIndent = parent.arguments[0].loc.start.column;
@@ -848,3 +849,3 @@ }
 
-            if (node.parent && statementsWithProperties.indexOf(node.parent.type) !== -1 && isNodeBodyBlock(node)) {
+            if (node.parent && statementsWithProperties.includes(node.parent.type) && isNodeBodyBlock(node)) {
                 indent = getNodeIndent(node.parent).goodChar;
@@ -964,3 +965,3 @@ } else if (node.parent && node.parent.type === "CatchClause") {
         /**
-         * Checks wether a return statement is wrapped in ()
+         * Checks whether a return statement is wrapped in ()
          * @param {ASTNode} node node to examine
@@ -967,0 +968,0 @@ * @returns {boolean} the result

lib/rules/index.js

@@ -9,3 +9,3 @@ /**
 
-/* eslint sort-keys: ["error", "asc"] */
+/* eslint sort-keys: ["error", "asc"] -- More readable for long list */
 
@@ -76,2 +76,3 @@ const { LazyLoadingRuleMap } = require("./utils/lazy-loading-rule-map");
     "lines-between-class-members": () => require("./lines-between-class-members"),
+    "logical-assignment-operators": () => require("./logical-assignment-operators"),
     "max-classes-per-file": () => require("./max-classes-per-file"),
@@ -108,2 +109,3 @@ "max-depth": () => require("./max-depth"),
     "no-const-assign": () => require("./no-const-assign"),
+    "no-constant-binary-expression": () => require("./no-constant-binary-expression"),
     "no-constant-condition": () => require("./no-constant-condition"),
@@ -127,2 +129,3 @@ "no-constructor-return": () => require("./no-constructor-return"),
     "no-empty-pattern": () => require("./no-empty-pattern"),
+    "no-empty-static-block": () => require("./no-empty-static-block"),
     "no-eq-null": () => require("./no-eq-null"),
@@ -172,2 +175,3 @@ "no-eval": () => require("./no-eval"),
     "no-new-func": () => require("./no-new-func"),
+    "no-new-native-nonconstructor": () => require("./no-new-native-nonconstructor"),
     "no-new-object": () => require("./no-new-object"),
@@ -179,2 +183,3 @@ "no-new-require": () => require("./no-new-require"),
     "no-obj-calls": () => require("./no-obj-calls"),
+    "no-object-constructor": () => require("./no-object-constructor"),
     "no-octal": () => require("./no-octal"),
@@ -230,2 +235,3 @@ "no-octal-escape": () => require("./no-octal-escape"),
     "no-unused-labels": () => require("./no-unused-labels"),
+    "no-unused-private-class-members": () => require("./no-unused-private-class-members"),
     "no-unused-vars": () => require("./no-unused-vars"),
@@ -264,2 +270,3 @@ "no-use-before-define": () => require("./no-use-before-define"),
     "prefer-numeric-literals": () => require("./prefer-numeric-literals"),
+    "prefer-object-has-own": () => require("./prefer-object-has-own"),
     "prefer-object-spread": () => require("./prefer-object-spread"),
@@ -266,0 +273,0 @@ "prefer-promise-reject-errors": () => require("./prefer-promise-reject-errors"),

lib/rules/init-declarations.js

@@ -45,2 +45,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -51,6 +52,5 @@ meta: {
         docs: {
-            description: "require or disallow initialization in variable declarations",
-            category: "Variables",
+            description: "Require or disallow initialization in variable declarations",
             recommended: false,
-            url: "https://eslint.org/docs/rules/init-declarations"
+            url: "https://eslint.org/docs/latest/rules/init-declarations"
         },
@@ -57,0 +57,0 @@

lib/rules/jsx-quotes.js

@@ -39,2 +39,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -45,6 +46,5 @@ meta: {
         docs: {
-            description: "enforce the consistent use of either double or single quotes in JSX attributes",
-            category: "Stylistic Issues",
+            description: "Enforce the consistent use of either double or single quotes in JSX attributes",
             recommended: false,
-            url: "https://eslint.org/docs/rules/jsx-quotes"
+            url: "https://eslint.org/docs/latest/rules/jsx-quotes"
         },
@@ -75,3 +75,3 @@
         function usesExpectedQuotes(node) {
-            return node.value.indexOf(setting.quote) !== -1 || astUtils.isSurroundedBy(node.raw, setting.quote);
+            return node.value.includes(setting.quote) || astUtils.isSurroundedBy(node.raw, setting.quote);
         }
@@ -78,0 +78,0 @@

lib/rules/key-spacing.js

@@ -12,7 +12,4 @@ /**
 const astUtils = require("./utils/ast-utils");
+const { getGraphemeCount } = require("../shared/string-utils");
 
-//------------------------------------------------------------------------------
-// Helpers
-//------------------------------------------------------------------------------
-
 /**
@@ -137,2 +134,3 @@ * Checks whether a string contains a line terminator as defined in
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -143,6 +141,5 @@ meta: {
         docs: {
-            description: "enforce consistent spacing between keys and values in object literal properties",
-            category: "Stylistic Issues",
+            description: "Enforce consistent spacing between keys and values in object literal properties",
             recommended: false,
-            url: "https://eslint.org/docs/rules/key-spacing"
+            url: "https://eslint.org/docs/latest/rules/key-spacing"
         },
@@ -335,5 +332,52 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
         /**
+         * Determines if the given property is key-value property.
+         * @param {ASTNode} property Property node to check.
+         * @returns {boolean} Whether the property is a key-value property.
+         */
+        function isKeyValueProperty(property) {
+            return !(
+                (property.method ||
+                property.shorthand ||
+                property.kind !== "init" || property.type !== "Property") // Could be "ExperimentalSpreadProperty" or "SpreadElement"
+            );
+        }
+
+        /**
+         * Starting from the given node (a property.key node here) looks forward
+         * until it finds the colon punctuator and returns it.
+         * @param {ASTNode} node The node to start looking from.
+         * @returns {ASTNode} The colon punctuator.
+         */
+        function getNextColon(node) {
+            return sourceCode.getTokenAfter(node, astUtils.isColonToken);
+        }
+
+        /**
+         * Starting from the given node (a property.key node here) looks forward
+         * until it finds the last token before a colon punctuator and returns it.
+         * @param {ASTNode} node The node to start looking from.
+         * @returns {ASTNode} The last token before a colon punctuator.
+         */
+        function getLastTokenBeforeColon(node) {
+            const colonToken = getNextColon(node);
+
+            return sourceCode.getTokenBefore(colonToken);
+        }
+
+        /**
+         * Starting from the given node (a property.key node here) looks forward
+         * until it finds the first token after a colon punctuator and returns it.
+         * @param {ASTNode} node The node to start looking from.
+         * @returns {ASTNode} The first token after a colon punctuator.
+         */
+        function getFirstTokenAfterColon(node) {
+            const colonToken = getNextColon(node);
+
+            return sourceCode.getTokenAfter(colonToken);
+        }
+
+        /**
          * Checks whether a property is a member of the property group it follows.
@@ -346,5 +390,5 @@ * @param {ASTNode} lastMember The last Property known to be in the group.
             const groupEndLine = lastMember.loc.start.line,
-                candidateStartLine = candidate.loc.start.line;
+                candidateValueStartLine = (isKeyValueProperty(candidate) ? getFirstTokenAfterColon(candidate.key) : candidate).loc.start.line;
 
-            if (candidateStartLine - groupEndLine <= 1) {
+            if (candidateValueStartLine - groupEndLine <= 1) {
                 return true;
@@ -363,3 +407,3 @@ }
                 leadingComments[0].loc.start.line - groupEndLine <= 1 &&
-                candidateStartLine - last(leadingComments).loc.end.line <= 1
+                candidateValueStartLine - last(leadingComments).loc.end.line <= 1
             ) {
@@ -378,37 +422,2 @@ for (let i = 1; i < leadingComments.length; i++) {
         /**
-         * Determines if the given property is key-value property.
-         * @param {ASTNode} property Property node to check.
-         * @returns {boolean} Whether the property is a key-value property.
-         */
-        function isKeyValueProperty(property) {
-            return !(
-                (property.method ||
-                property.shorthand ||
-                property.kind !== "init" || property.type !== "Property") // Could be "ExperimentalSpreadProperty" or "SpreadElement"
-            );
-        }
-
-        /**
-         * Starting from the given a node (a property.key node here) looks forward
-         * until it finds the last token before a colon punctuator and returns it.
-         * @param {ASTNode} node The node to start looking from.
-         * @returns {ASTNode} The last token before a colon punctuator.
-         */
-        function getLastTokenBeforeColon(node) {
-            const colonToken = sourceCode.getTokenAfter(node, astUtils.isColonToken);
-
-            return sourceCode.getTokenBefore(colonToken);
-        }
-
-        /**
-         * Starting from the given a node (a property.key node here) looks forward
-         * until it finds the colon punctuator and returns it.
-         * @param {ASTNode} node The node to start looking from.
-         * @returns {ASTNode} The colon punctuator.
-         */
-        function getNextColon(node) {
-            return sourceCode.getTokenAfter(node, astUtils.isColonToken);
-        }
-
-        /**
          * Gets an object literal property's key as the identifier name or string value.
@@ -438,16 +447,4 @@ * @param {ASTNode} property Property node whose key to retrieve.
         function report(property, side, whitespace, expected, mode) {
-            const diff = whitespace.length - expected,
-                nextColon = getNextColon(property.key),
-                tokenBeforeColon = sourceCode.getTokenBefore(nextColon, { includeComments: true }),
-                tokenAfterColon = sourceCode.getTokenAfter(nextColon, { includeComments: true }),
-                isKeySide = side === "key",
-                isExtra = diff > 0,
-                diffAbs = Math.abs(diff),
-                spaces = Array(diffAbs + 1).join(" ");
+            const diff = whitespace.length - expected;
 
-            const locStart = isKeySide ? tokenBeforeColon.loc.end : nextColon.loc.start;
-            const locEnd = isKeySide ? nextColon.loc.start : tokenAfterColon.loc.start;
-            const missingLoc = isKeySide ? tokenBeforeColon.loc : tokenAfterColon.loc;
-            const loc = isExtra ? { start: locStart, end: locEnd } : missingLoc;
-
             if ((
@@ -459,2 +456,15 @@ diff && mode === "strict" ||
             ) {
+                const nextColon = getNextColon(property.key),
+                    tokenBeforeColon = sourceCode.getTokenBefore(nextColon, { includeComments: true }),
+                    tokenAfterColon = sourceCode.getTokenAfter(nextColon, { includeComments: true }),
+                    isKeySide = side === "key",
+                    isExtra = diff > 0,
+                    diffAbs = Math.abs(diff),
+                    spaces = Array(diffAbs + 1).join(" ");
+
+                const locStart = isKeySide ? tokenBeforeColon.loc.end : nextColon.loc.start;
+                const locEnd = isKeySide ? nextColon.loc.start : tokenAfterColon.loc.start;
+                const missingLoc = isKeySide ? tokenBeforeColon.loc : tokenAfterColon.loc;
+                const loc = isExtra ? { start: locStart, end: locEnd } : missingLoc;
+
                 let fix;
@@ -519,3 +529,3 @@
 
-            return endToken.range[1] - startToken.range[0];
+            return getGraphemeCount(sourceCode.getText().slice(startToken.range[0], endToken.range[1]));
         }
@@ -544,4 +554,4 @@
          * Creates groups of properties.
-         * @param  {ASTNode} node ObjectExpression node being evaluated.
-         * @returns {Array.<ASTNode[]>} Groups of property AST node lists.
+         * @param {ASTNode} node ObjectExpression node being evaluated.
+         * @returns {Array<ASTNode[]>} Groups of property AST node lists.
          */
@@ -614,3 +624,3 @@ function createGroups(node) {
          * Verifies spacing of property conforms to specified options.
-         * @param  {ASTNode} node Property node being evaluated.
+         * @param {ASTNode} node Property node being evaluated.
          * @param {Object} lineOptions Configured singleLine or multiLine options
@@ -644,3 +654,3 @@ * @returns {void}
          * Verifies vertical alignment, taking into account groups of properties.
-         * @param  {ASTNode} node ObjectExpression node being evaluated.
+         * @param {ASTNode} node ObjectExpression node being evaluated.
          * @returns {void}
@@ -647,0 +657,0 @@ */

lib/rules/keyword-spacing.js

@@ -25,3 +25,3 @@ /**
 const TEMPLATE_CLOSE_PAREN = /^\}/u;
-const CHECK_TYPE = /^(?:JSXElement|RegularExpression|String|Template)$/u;
+const CHECK_TYPE = /^(?:JSXElement|RegularExpression|String|Template|PrivateIdentifier)$/u;
 const KEYS = keywords.concat(["as", "async", "await", "from", "get", "let", "of", "set", "yield"]);
@@ -65,2 +65,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -71,6 +72,5 @@ meta: {
         docs: {
-            description: "enforce consistent spacing before and after keywords",
-            category: "Stylistic Issues",
+            description: "Enforce consistent spacing before and after keywords",
             recommended: false,
-            url: "https://eslint.org/docs/rules/keyword-spacing"
+            url: "https://eslint.org/docs/latest/rules/keyword-spacing"
         },
@@ -114,4 +114,6 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
+        const tokensToIgnore = new WeakSet();
+
         /**
@@ -129,2 +131,3 @@ * Reports a given token if there are not space(s) before the token.
                 !isOpenParenOfTemplate(prevToken) &&
+                !tokensToIgnore.has(prevToken) &&
                 astUtils.isTokenOnSameLine(prevToken, token) &&
@@ -156,2 +159,3 @@ !sourceCode.isSpaceBetweenTokens(prevToken, token)
                 !isOpenParenOfTemplate(prevToken) &&
+                !tokensToIgnore.has(prevToken) &&
                 astUtils.isTokenOnSameLine(prevToken, token) &&
@@ -183,2 +187,3 @@ sourceCode.isSpaceBetweenTokens(prevToken, token)
                 !isCloseParenOfTemplate(nextToken) &&
+                !tokensToIgnore.has(nextToken) &&
                 astUtils.isTokenOnSameLine(token, nextToken) &&
@@ -210,2 +215,3 @@ !sourceCode.isSpaceBetweenTokens(token, nextToken)
                 !isCloseParenOfTemplate(nextToken) &&
+                !tokensToIgnore.has(nextToken) &&
                 astUtils.isTokenOnSameLine(token, nextToken) &&
@@ -414,3 +420,11 @@ sourceCode.isSpaceBetweenTokens(token, nextToken)
             checkSpacingAroundFirstToken(node);
-            checkSpacingAroundTokenBefore(node.right);
+
+            const inToken = sourceCode.getTokenBefore(node.right, astUtils.isNotOpeningParenToken);
+            const previousToken = sourceCode.getTokenBefore(inToken);
+
+            if (previousToken.type !== "PrivateIdentifier") {
+                checkSpacingBefore(inToken);
+            }
+
+            checkSpacingAfter(inToken);
         }
@@ -431,3 +445,11 @@
             }
-            checkSpacingAround(sourceCode.getTokenBefore(node.right, astUtils.isNotOpeningParenToken));
+
+            const ofToken = sourceCode.getTokenBefore(node.right, astUtils.isNotOpeningParenToken);
+            const previousToken = sourceCode.getTokenBefore(ofToken);
+
+            if (previousToken.type !== "PrivateIdentifier") {
+                checkSpacingBefore(ofToken);
+            }
+
+            checkSpacingAfter(ofToken);
         }
@@ -460,2 +482,3 @@
                 checkSpacingBefore(asToken, PREV_TOKEN_M);
+                checkSpacingAfter(asToken, NEXT_TOKEN_M);
             }
@@ -474,2 +497,31 @@
          * keyword is invalid.
+         * @param {ASTNode} node An `ImportSpecifier` node to check.
+         * @returns {void}
+         */
+        function checkSpacingForImportSpecifier(node) {
+            if (node.imported.range[0] !== node.local.range[0]) {
+                const asToken = sourceCode.getTokenBefore(node.local);
+
+                checkSpacingBefore(asToken, PREV_TOKEN_M);
+            }
+        }
+
+        /**
+         * Reports `as` keyword of a given node if usage of spacing around this
+         * keyword is invalid.
+         * @param {ASTNode} node An `ExportSpecifier` node to check.
+         * @returns {void}
+         */
+        function checkSpacingForExportSpecifier(node) {
+            if (node.local.range[0] !== node.exported.range[0]) {
+                const asToken = sourceCode.getTokenBefore(node.exported);
+
+                checkSpacingBefore(asToken, PREV_TOKEN_M);
+                checkSpacingAfter(asToken, NEXT_TOKEN_M);
+            }
+        }
+
+        /**
+         * Reports `as` keyword of a given node if usage of spacing around this
+         * keyword is invalid.
          * @param {ASTNode} node A node to report.
@@ -488,2 +540,3 @@ * @returns {void}
          * @param {ASTNode} node A node to report.
+         * @throws {Error} If unable to find token get, set, or async beside method name.
          * @returns {void}
@@ -581,7 +634,18 @@ */
             // Others
+            ImportSpecifier: checkSpacingForImportSpecifier,
+            ExportSpecifier: checkSpacingForExportSpecifier,
             ImportNamespaceSpecifier: checkSpacingForImportNamespaceSpecifier,
             MethodDefinition: checkSpacingForProperty,
-            Property: checkSpacingForProperty
+            PropertyDefinition: checkSpacingForProperty,
+            StaticBlock: checkSpacingAroundFirstToken,
+            Property: checkSpacingForProperty,
+
+            // To avoid conflicts with `space-infix-ops`, e.g. `a > this.b`
+            "BinaryExpression[operator='>']"(node) {
+                const operatorToken = sourceCode.getTokenBefore(node.right, astUtils.isNotOpeningParenToken);
+
+                tokensToIgnore.add(operatorToken);
+            }
         };
     }
 };

lib/rules/line-comment-position.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "enforce position of line comments",
-            category: "Stylistic Issues",
+            description: "Enforce position of line comments",
             recommended: false,
-            url: "https://eslint.org/docs/rules/line-comment-position"
+            url: "https://eslint.org/docs/latest/rules/line-comment-position"
         },
@@ -83,3 +83,3 @@
         const customIgnoreRegExp = new RegExp(ignorePattern, "u");
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -86,0 +86,0 @@ //--------------------------------------------------------------------------

lib/rules/linebreak-style.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "enforce consistent linebreak style",
-            category: "Stylistic Issues",
+            description: "Enforce consistent linebreak style",
             recommended: false,
-            url: "https://eslint.org/docs/rules/linebreak-style"
+            url: "https://eslint.org/docs/latest/rules/linebreak-style"
         },
@@ -45,3 +45,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -48,0 +48,0 @@ //--------------------------------------------------------------------------

lib/rules/lines-around-comment.js

@@ -11,4 +11,3 @@ /**
 
-const lodash = require("lodash"),
-    astUtils = require("./utils/ast-utils");
+const astUtils = require("./utils/ast-utils");
 
@@ -20,3 +19,3 @@ //------------------------------------------------------------------------------
 /**
- * Return an array with with any line numbers that are empty.
+ * Return an array with any line numbers that are empty.
  * @param {Array} lines An array of each line of the file.
@@ -35,3 +34,3 @@ * @returns {Array} An array of line numbers.
 /**
- * Return an array with with any line numbers that contain comments.
+ * Return an array with any line numbers that contain comments.
  * @param {Array} comments An array of comment tokens.
@@ -56,2 +55,3 @@ * @returns {Array} An array of line numbers.
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -62,6 +62,5 @@ meta: {
         docs: {
-            description: "require empty lines around comments",
-            category: "Stylistic Issues",
+            description: "Require empty lines around comments",
             recommended: false,
-            url: "https://eslint.org/docs/rules/lines-around-comment"
+            url: "https://eslint.org/docs/latest/rules/lines-around-comment"
         },
@@ -122,2 +121,6 @@
                         type: "boolean"
+                    },
+                    afterHashbangComment: {
+                        type: "boolean",
+                        default: false
                     }
@@ -144,3 +147,3 @@ },
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -152,3 +155,3 @@ const lines = sourceCode.lines,
             emptyLines = getEmptyLineNums(lines),
-            commentAndEmptyLines = commentLines.concat(emptyLines);
+            commentAndEmptyLines = new Set(commentLines.concat(emptyLines));
 
@@ -198,6 +201,35 @@ /**
          * @param {token} token The token to check.
-         * @returns {ASTNode} The parent node that contains the given token.
+         * @returns {ASTNode|null} The parent node that contains the given token.
          */
         function getParentNodeOfToken(token) {
-            return sourceCode.getNodeByRangeIndex(token.range[0]);
+            const node = sourceCode.getNodeByRangeIndex(token.range[0]);
+
+            /*
+             * For the purpose of this rule, the comment token is in a `StaticBlock` node only
+             * if it's inside the braces of that `StaticBlock` node.
+             *
+             * Example where this function returns `null`:
+             *
+             *   static
+             *   // comment
+             *   {
+             *   }
+             *
+             * Example where this function returns `StaticBlock` node:
+             *
+             *   static
+             *   {
+             *   // comment
+             *   }
+             *
+             */
+            if (node && node.type === "StaticBlock") {
+                const openingBrace = sourceCode.getFirstToken(node, { skip: 1 }); // skip the `static` token
+
+                return token.range[0] >= openingBrace.range[0]
+                    ? node
+                    : null;
+            }
+
+            return node;
         }
@@ -214,4 +246,17 @@
 
-            return parent && isParentNodeType(parent, nodeType) &&
-                    token.loc.start.line - parent.loc.start.line === 1;
+            if (parent && isParentNodeType(parent, nodeType)) {
+                let parentStartNodeOrToken = parent;
+
+                if (parent.type === "StaticBlock") {
+                    parentStartNodeOrToken = sourceCode.getFirstToken(parent, { skip: 1 }); // opening brace of the static block
+                } else if (parent.type === "SwitchStatement") {
+                    parentStartNodeOrToken = sourceCode.getTokenAfter(parent.discriminant, {
+                        filter: astUtils.isOpeningBraceToken
+                    }); // opening brace of the switch statement
+                }
+
+                return token.loc.start.line - parentStartNodeOrToken.loc.start.line === 1;
+            }
+
+            return false;
         }
@@ -228,3 +273,3 @@
 
-            return parent && isParentNodeType(parent, nodeType) &&
+            return !!parent && isParentNodeType(parent, nodeType) &&
                     parent.loc.end.line - token.loc.end.line === 1;
@@ -239,3 +284,9 @@ }
         function isCommentAtBlockStart(token) {
-            return isCommentAtParentStart(token, "ClassBody") || isCommentAtParentStart(token, "BlockStatement") || isCommentAtParentStart(token, "SwitchCase");
+            return (
+                isCommentAtParentStart(token, "ClassBody") ||
+                isCommentAtParentStart(token, "BlockStatement") ||
+                isCommentAtParentStart(token, "StaticBlock") ||
+                isCommentAtParentStart(token, "SwitchCase") ||
+                isCommentAtParentStart(token, "SwitchStatement")
+            );
         }
@@ -249,3 +300,9 @@
         function isCommentAtBlockEnd(token) {
-            return isCommentAtParentEnd(token, "ClassBody") || isCommentAtParentEnd(token, "BlockStatement") || isCommentAtParentEnd(token, "SwitchCase") || isCommentAtParentEnd(token, "SwitchStatement");
+            return (
+                isCommentAtParentEnd(token, "ClassBody") ||
+                isCommentAtParentEnd(token, "BlockStatement") ||
+                isCommentAtParentEnd(token, "StaticBlock") ||
+                isCommentAtParentEnd(token, "SwitchCase") ||
+                isCommentAtParentEnd(token, "SwitchStatement")
+            );
         }
@@ -363,3 +420,3 @@
             // check for newline before
-            if (!exceptionStartAllowed && before && !lodash.includes(commentAndEmptyLines, prevLineNum) &&
+            if (!exceptionStartAllowed && before && !commentAndEmptyLines.has(prevLineNum) &&
                     !(astUtils.isCommentToken(previousTokenOrComment) && astUtils.isTokenOnSameLine(previousTokenOrComment, token))) {
@@ -379,3 +436,3 @@ const lineStart = token.range[0] - token.loc.start.column;
             // check for newline after
-            if (!exceptionEndAllowed && after && !lodash.includes(commentAndEmptyLines, nextLineNum) &&
+            if (!exceptionEndAllowed && after && !commentAndEmptyLines.has(nextLineNum) &&
                     !(astUtils.isCommentToken(nextTokenOrComment) && astUtils.isTokenOnSameLine(token, nextTokenOrComment))) {
@@ -414,2 +471,9 @@ context.report({
                         }
+                    } else if (token.type === "Shebang") {
+                        if (options.afterHashbangComment) {
+                            checkForEmptyLine(token, {
+                                after: options.afterHashbangComment,
+                                before: false
+                            });
+                        }
                     }
@@ -416,0 +480,0 @@ });

lib/rules/lines-around-directive.js

 /**
  * @fileoverview Require or disallow newlines around directives.
  * @author Kai Cataldo
- * @deprecated
+ * @deprecated in ESLint v4.0.0
  */
@@ -15,2 +15,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -21,6 +22,5 @@ meta: {
         docs: {
-            description: "require or disallow newlines around directives",
-            category: "Stylistic Issues",
+            description: "Require or disallow newlines around directives",
             recommended: false,
-            url: "https://eslint.org/docs/rules/lines-around-directive"
+            url: "https://eslint.org/docs/latest/rules/lines-around-directive"
         },
@@ -59,3 +59,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const config = context.options[0] || "always";
@@ -62,0 +62,0 @@ const expectLineBefore = typeof config === "string" ? config : config.before;

lib/rules/lines-between-class-members.js

@@ -7,8 +7,28 @@ /**
 
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
 const astUtils = require("./utils/ast-utils");
 
 //------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Types of class members.
+ * Those have `test` method to check it matches to the given class member.
+ * @private
+ */
+const ClassMemberTypes = {
+    "*": { test: () => true },
+    field: { test: node => node.type === "PropertyDefinition" },
+    method: { test: node => node.type === "MethodDefinition" }
+};
+
+//------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +39,5 @@ meta: {
         docs: {
-            description: "require or disallow an empty line between class members",
-            category: "Stylistic Issues",
+            description: "Require or disallow an empty line between class members",
             recommended: false,
-            url: "https://eslint.org/docs/rules/lines-between-class-members"
+            url: "https://eslint.org/docs/latest/rules/lines-between-class-members"
         },
@@ -30,3 +49,28 @@
             {
-                enum: ["always", "never"]
+                anyOf: [
+                    {
+                        type: "object",
+                        properties: {
+                            enforce: {
+                                type: "array",
+                                items: {
+                                    type: "object",
+                                    properties: {
+                                        blankLine: { enum: ["always", "never"] },
+                                        prev: { enum: ["method", "field", "*"] },
+                                        next: { enum: ["method", "field", "*"] }
+                                    },
+                                    additionalProperties: false,
+                                    required: ["blankLine", "prev", "next"]
+                                },
+                                minItems: 1
+                            }
+                        },
+                        additionalProperties: false,
+                        required: ["enforce"]
+                    },
+                    {
+                        enum: ["always", "never"]
+                    }
+                ]
             },
@@ -57,5 +101,51 @@ {
 
-        const sourceCode = context.getSourceCode();
+        const configureList = typeof options[0] === "object" ? options[0].enforce : [{ blankLine: options[0], prev: "*", next: "*" }];
+        const sourceCode = context.sourceCode;
 
         /**
+         * Gets a pair of tokens that should be used to check lines between two class member nodes.
+         *
+         * In most cases, this returns the very last token of the current node and
+         * the very first token of the next node.
+         * For example:
+         *
+         *     class C {
+         *         x = 1;   // curLast: `;` nextFirst: `in`
+         *         in = 2
+         *     }
+         *
+         * There is only one exception. If the given node ends with a semicolon, and it looks like
+         * a semicolon-less style's semicolon - one that is not on the same line as the preceding
+         * token, but is on the line where the next class member starts - this returns the preceding
+         * token and the semicolon as boundary tokens.
+         * For example:
+         *
+         *     class C {
+         *         x = 1    // curLast: `1` nextFirst: `;`
+         *         ;in = 2
+         *     }
+         * When determining the desired layout of the code, we should treat this semicolon as
+         * a part of the next class member node instead of the one it technically belongs to.
+         * @param {ASTNode} curNode Current class member node.
+         * @param {ASTNode} nextNode Next class member node.
+         * @returns {Token} The actual last token of `node`.
+         * @private
+         */
+        function getBoundaryTokens(curNode, nextNode) {
+            const lastToken = sourceCode.getLastToken(curNode);
+            const prevToken = sourceCode.getTokenBefore(lastToken);
+            const nextToken = sourceCode.getFirstToken(nextNode); // skip possible lone `;` between nodes
+
+            const isSemicolonLessStyle = (
+                astUtils.isSemicolonToken(lastToken) &&
+                !astUtils.isTokenOnSameLine(prevToken, lastToken) &&
+                astUtils.isTokenOnSameLine(lastToken, nextToken)
+            );
+
+            return isSemicolonLessStyle
+                ? { curLast: prevToken, nextFirst: lastToken }
+                : { curLast: lastToken, nextFirst: nextToken };
+        }
+
+        /**
          * Return the last token among the consecutive tokens that have no exceed max line difference in between, before the first token in the next member.
@@ -102,2 +192,34 @@ * @param {Token} prevLastToken The last token in the previous member node.
 
+        /**
+         * Checks whether the given node matches the given type.
+         * @param {ASTNode} node The class member node to check.
+         * @param {string} type The class member type to check.
+         * @returns {boolean} `true` if the class member node matched the type.
+         * @private
+         */
+        function match(node, type) {
+            return ClassMemberTypes[type].test(node);
+        }
+
+        /**
+         * Finds the last matched configuration from the configureList.
+         * @param {ASTNode} prevNode The previous node to match.
+         * @param {ASTNode} nextNode The current node to match.
+         * @returns {string|null} Padding type or `null` if no matches were found.
+         * @private
+         */
+        function getPaddingType(prevNode, nextNode) {
+            for (let i = configureList.length - 1; i >= 0; --i) {
+                const configure = configureList[i];
+                const matched =
+                    match(prevNode, configure.prev) &&
+                    match(nextNode, configure.next);
+
+                if (matched) {
+                    return configure.blankLine;
+                }
+            }
+            return null;
+        }
+
         return {
@@ -109,4 +231,3 @@ ClassBody(node) {
                     const curFirst = sourceCode.getFirstToken(body[i]);
-                    const curLast = sourceCode.getLastToken(body[i]);
-                    const nextFirst = sourceCode.getFirstToken(body[i + 1]);
+                    const { curLast, nextFirst } = getBoundaryTokens(body[i], body[i + 1]);
                     const isMulti = !astUtils.isTokenOnSameLine(curFirst, curLast);
@@ -119,8 +240,9 @@ const skip = !isMulti && options[1].exceptAfterSingleLine;
                     const curLineLastToken = findLastConsecutiveTokenAfter(curLast, nextFirst, 0);
+                    const paddingType = getPaddingType(body[i], body[i + 1]);
 
-                    if ((options[0] === "always" && !skip && !isPadded) ||
-                        (options[0] === "never" && isPadded)) {
+                    if (paddingType === "never" && isPadded) {
                         context.report({
                             node: body[i + 1],
-                            messageId: isPadded ? "never" : "always",
+                            messageId: "never",
+
                             fix(fixer) {
@@ -130,8 +252,19 @@ if (hasTokenInPadding) {
                                 }
-                                return isPadded
-                                    ? fixer.replaceTextRange([beforePadding.range[1], afterPadding.range[0]], "\n")
-                                    : fixer.insertTextAfter(curLineLastToken, "\n");
+                                return fixer.replaceTextRange([beforePadding.range[1], afterPadding.range[0]], "\n");
                             }
                         });
+                    } else if (paddingType === "always" && !skip && !isPadded) {
+                        context.report({
+                            node: body[i + 1],
+                            messageId: "always",
+
+                            fix(fixer) {
+                                if (hasTokenInPadding) {
+                                    return null;
+                                }
+                                return fixer.insertTextAfter(curLineLastToken, "\n");
+                            }
+                        });
                     }
+
                 }
@@ -138,0 +271,0 @@ }

lib/rules/max-classes-per-file.js

@@ -16,2 +16,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -22,6 +23,5 @@ meta: {
         docs: {
-            description: "enforce a maximum number of classes per file",
-            category: "Best Practices",
+            description: "Enforce a maximum number of classes per file",
             recommended: false,
-            url: "https://eslint.org/docs/rules/max-classes-per-file"
+            url: "https://eslint.org/docs/latest/rules/max-classes-per-file"
         },
@@ -31,4 +31,21 @@
             {
-                type: "integer",
-                minimum: 1
+                oneOf: [
+                    {
+                        type: "integer",
+                        minimum: 1
+                    },
+                    {
+                        type: "object",
+                        properties: {
+                            ignoreExpressions: {
+                                type: "boolean"
+                            },
+                            max: {
+                                type: "integer",
+                                minimum: 1
+                            }
+                        },
+                        additionalProperties: false
+                    }
+                ]
             }
@@ -42,5 +59,7 @@ ],
     create(context) {
+        const [option = {}] = context.options;
+        const [ignoreExpressions, max] = typeof option === "number"
+            ? [false, option || 1]
+            : [option.ignoreExpressions, option.max || 1];
 
-        const maxClasses = context.options[0] || 1;
-
         let classCount = 0;
@@ -53,3 +72,3 @@
             "Program:exit"(node) {
-                if (classCount > maxClasses) {
+                if (classCount > max) {
                     context.report({
@@ -60,3 +79,3 @@ node,
                             classCount,
-                            max: maxClasses
+                            max
                         }
@@ -66,4 +85,9 @@ });
             },
-            "ClassDeclaration, ClassExpression"() {
+            "ClassDeclaration"() {
                 classCount++;
+            },
+            "ClassExpression"() {
+                if (!ignoreExpressions) {
+                    classCount++;
+                }
             }
@@ -70,0 +94,0 @@ };

lib/rules/max-depth.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "enforce a maximum depth that blocks can be nested",
-            category: "Stylistic Issues",
+            description: "Enforce a maximum depth that blocks can be nested",
             recommended: false,
-            url: "https://eslint.org/docs/rules/max-depth"
+            url: "https://eslint.org/docs/latest/rules/max-depth"
         },
@@ -124,2 +124,3 @@
             ArrowFunctionExpression: startFunction,
+            StaticBlock: startFunction,
 
@@ -153,2 +154,3 @@ IfStatement(node) {
             "ArrowFunctionExpression:exit": endFunction,
+            "StaticBlock:exit": endFunction,
             "Program:exit": endFunction
@@ -155,0 +157,0 @@ };

lib/rules/max-len.js

@@ -66,2 +66,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -72,6 +73,5 @@ meta: {
         docs: {
-            description: "enforce a maximum line length",
-            category: "Stylistic Issues",
+            description: "Enforce a maximum line length",
             recommended: false,
-            url: "https://eslint.org/docs/rules/max-len"
+            url: "https://eslint.org/docs/latest/rules/max-len"
         },
@@ -102,3 +102,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -221,3 +221,3 @@ /**
          * @param {string} key the object's key
-         * @param {*} value the value to add
+         * @param {any} value the value to add
          * @returns {void}
@@ -259,15 +259,19 @@ * @private
 
-
         /**
-         * A reducer to group an AST node by line number, both start and end.
-         * @param {Object} acc the accumulator
-         * @param {ASTNode} node the AST node in question
-         * @returns {Object} the modified accumulator
-         * @private
+         *
+         * reduce an array of AST nodes by line number, both start and end.
+         * @param {ASTNode[]} arr array of AST nodes
+         * @returns {Object} accululated AST nodes
          */
-        function groupByLineNumber(acc, node) {
-            for (let i = node.loc.start.line; i <= node.loc.end.line; ++i) {
-                ensureArrayAndPush(acc, i, node);
+        function groupArrayByLineNumber(arr) {
+            const obj = {};
+
+            for (let i = 0; i < arr.length; i++) {
+                const node = arr[i];
+
+                for (let j = node.loc.start.line; j <= node.loc.end.line; ++j) {
+                    ensureArrayAndPush(obj, j, node);
+                }
             }
-            return acc;
+            return obj;
         }
@@ -320,9 +324,9 @@
             const strings = getAllStrings();
-            const stringsByLine = strings.reduce(groupByLineNumber, {});
+            const stringsByLine = groupArrayByLineNumber(strings);
 
             const templateLiterals = getAllTemplateLiterals();
-            const templateLiteralsByLine = templateLiterals.reduce(groupByLineNumber, {});
+            const templateLiteralsByLine = groupArrayByLineNumber(templateLiterals);
 
             const regExpLiterals = getAllRegExpLiterals();
-            const regExpLiteralsByLine = regExpLiterals.reduce(groupByLineNumber, {});
+            const regExpLiteralsByLine = groupArrayByLineNumber(regExpLiterals);
 
@@ -329,0 +333,0 @@ lines.forEach((line, i) => {

lib/rules/max-lines-per-function.js

@@ -12,5 +12,4 @@ /**
 const astUtils = require("./utils/ast-utils");
+const { upperCaseFirst } = require("../shared/string-utils");
 
-const lodash = require("lodash");
-
 //------------------------------------------------------------------------------
@@ -53,3 +52,3 @@ // Constants
  * @param {Array} comments An array of comment nodes.
- * @returns {Map.<string,Node>} A map with numeric keys (source code line numbers) and comment token values.
+ * @returns {Map<string, Node>} A map with numeric keys (source code line numbers) and comment token values.
  */
@@ -71,2 +70,3 @@ function getCommentLineNumbers(comments) {
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -77,6 +77,5 @@ meta: {
         docs: {
-            description: "enforce a maximum number of line of code in a function",
-            category: "Stylistic Issues",
+            description: "Enforce a maximum number of lines of code in a function",
             recommended: false,
-            url: "https://eslint.org/docs/rules/max-lines-per-function"
+            url: "https://eslint.org/docs/latest/rules/max-lines-per-function"
         },
@@ -93,3 +92,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const lines = sourceCode.lines;
@@ -199,3 +198,3 @@
             if (lineCount > maxLines) {
-                const name = lodash.upperFirst(astUtils.getFunctionNameWithKind(funcNode));
+                const name = upperCaseFirst(astUtils.getFunctionNameWithKind(funcNode));
 
@@ -202,0 +201,0 @@ context.report({

lib/rules/max-lines.js

@@ -11,9 +11,23 @@ /**
 
-const lodash = require("lodash");
 const astUtils = require("./utils/ast-utils");
 
 //------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Creates an array of numbers from `start` up to, but not including, `end`
+ * @param {number} start The start of the range
+ * @param {number} end The end of the range
+ * @returns {number[]} The range of numbers
+ */
+function range(start, end) {
+    return [...Array(end - start).keys()].map(x => x + start);
+}
+
+//------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +38,5 @@ meta: {
         docs: {
-            description: "enforce a maximum number of lines per file",
-            category: "Stylistic Issues",
+            description: "Enforce a maximum number of lines per file",
             recommended: false,
-            url: "https://eslint.org/docs/rules/max-lines"
+            url: "https://eslint.org/docs/latest/rules/max-lines"
         },
@@ -79,3 +92,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -125,3 +138,3 @@ /**
             if (start <= end) {
-                return lodash.range(start, end + 1);
+                return range(start, end + 1);
             }
@@ -142,3 +155,3 @@ return [];
                  */
-                if (lines.length > 1 && lodash.last(lines).text === "") {
+                if (lines.length > 1 && lines[lines.length - 1].text === "") {
                     lines.pop();
@@ -154,8 +167,6 @@ }
 
-                    const commentLines = lodash.flatten(
-                        comments.map(comment => getLinesWithoutCode(comment))
-                    );
+                    const commentLines = new Set(comments.flatMap(getLinesWithoutCode));
 
                     lines = lines.filter(
-                        l => !lodash.includes(commentLines, l.lineNumber)
+                        l => !commentLines.has(l.lineNumber)
                     );
@@ -172,3 +183,3 @@ }
                             line: sourceCode.lines.length,
-                            column: lodash.last(sourceCode.lines).length
+                            column: sourceCode.lines[sourceCode.lines.length - 1].length
                         }
@@ -175,0 +186,0 @@ };

lib/rules/max-nested-callbacks.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "enforce a maximum depth that callbacks can be nested",
-            category: "Stylistic Issues",
+            description: "Enforce a maximum depth that callbacks can be nested",
             recommended: false,
-            url: "https://eslint.org/docs/rules/max-nested-callbacks"
+            url: "https://eslint.org/docs/latest/rules/max-nested-callbacks"
         },
@@ -24,0 +24,0 @@

lib/rules/max-params.js

@@ -12,5 +12,4 @@ /**
 
-const lodash = require("lodash");
-
 const astUtils = require("./utils/ast-utils");
+const { upperCaseFirst } = require("../shared/string-utils");
 
@@ -21,2 +20,3 @@ //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -27,6 +27,5 @@ meta: {
         docs: {
-            description: "enforce a maximum number of parameters in function definitions",
-            category: "Stylistic Issues",
+            description: "Enforce a maximum number of parameters in function definitions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/max-params"
+            url: "https://eslint.org/docs/latest/rules/max-params"
         },
@@ -64,3 +63,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const option = context.options[0];
@@ -92,3 +91,3 @@ let numParams = 3;
                     data: {
-                        name: lodash.upperFirst(astUtils.getFunctionNameWithKind(node)),
+                        name: upperCaseFirst(astUtils.getFunctionNameWithKind(node)),
                         count: node.params.length,
@@ -95,0 +94,0 @@ max: numParams

lib/rules/max-statements-per-line.js

@@ -17,2 +17,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +24,5 @@ meta: {
         docs: {
-            description: "enforce a maximum number of statements allowed per line",
-            category: "Stylistic Issues",
+            description: "Enforce a maximum number of statements allowed per line",
             recommended: false,
-            url: "https://eslint.org/docs/rules/max-statements-per-line"
+            url: "https://eslint.org/docs/latest/rules/max-statements-per-line"
         },
@@ -50,3 +50,3 @@
 
-        const sourceCode = context.getSourceCode(),
+        const sourceCode = context.sourceCode,
             options = context.options[0] || {},
@@ -53,0 +53,0 @@ maxStatementsPerLine = typeof options.max !== "undefined" ? options.max : 1;

lib/rules/max-statements.js

@@ -12,5 +12,4 @@ /**
 
-const lodash = require("lodash");
-
 const astUtils = require("./utils/ast-utils");
+const { upperCaseFirst } = require("../shared/string-utils");
 
@@ -21,2 +20,3 @@ //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -27,6 +27,5 @@ meta: {
         docs: {
-            description: "enforce a maximum number of statements allowed in function blocks",
-            category: "Stylistic Issues",
+            description: "Enforce a maximum number of statements allowed in function blocks",
             recommended: false,
-            url: "https://eslint.org/docs/rules/max-statements"
+            url: "https://eslint.org/docs/latest/rules/max-statements"
         },
@@ -103,3 +102,3 @@
             if (count > max) {
-                const name = lodash.upperFirst(astUtils.getFunctionNameWithKind(node));
+                const name = upperCaseFirst(astUtils.getFunctionNameWithKind(node));
 
@@ -132,2 +131,10 @@ context.report({
 
+            /*
+             * This rule does not apply to class static blocks, but we have to track them so
+             * that statements in them do not count as statements in the enclosing function.
+             */
+            if (node.type === "StaticBlock") {
+                return;
+            }
+
             if (ignoreTopLevelFunctions && functionStack.length === 0) {
@@ -158,2 +165,3 @@ topLevelFunctions.push({ node, count });
             ArrowFunctionExpression: startFunction,
+            StaticBlock: startFunction,
 
@@ -165,2 +173,3 @@ BlockStatement: countStatements,
             "ArrowFunctionExpression:exit": endFunction,
+            "StaticBlock:exit": endFunction,
 
@@ -167,0 +176,0 @@ "Program:exit"() {

lib/rules/multiline-comment-style.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,10 +20,39 @@ meta: {
         docs: {
-            description: "enforce a particular style for multiline comments",
-            category: "Stylistic Issues",
+            description: "Enforce a particular style for multiline comments",
             recommended: false,
-            url: "https://eslint.org/docs/rules/multiline-comment-style"
+            url: "https://eslint.org/docs/latest/rules/multiline-comment-style"
         },
 
         fixable: "whitespace",
-        schema: [{ enum: ["starred-block", "separate-lines", "bare-block"] }],
+        schema: {
+            anyOf: [
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["starred-block", "bare-block"]
+                        }
+                    ],
+                    additionalItems: false
+                },
+                {
+                    type: "array",
+                    items: [
+                        {
+                            enum: ["separate-lines"]
+                        },
+                        {
+                            type: "object",
+                            properties: {
+                                checkJSDoc: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    ],
+                    additionalItems: false
+                }
+            ]
+        },
         messages: {
@@ -40,4 +70,6 @@ expectedBlock: "Expected a block comment instead of consecutive line comments.",
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const option = context.options[0] || "starred-block";
+        const params = context.options[1] || {};
+        const checkJSDoc = !!params.checkJSDoc;
 
@@ -339,7 +371,14 @@ //----------------------------------------------------------------------
 
-                if (firstComment.type !== "Block" || isJSDocComment(commentGroup)) {
+                const isJSDoc = isJSDocComment(commentGroup);
+
+                if (firstComment.type !== "Block" || (!checkJSDoc && isJSDoc)) {
                     return;
                 }
 
-                const commentLines = getCommentLines(commentGroup);
+                let commentLines = getCommentLines(commentGroup);
+
+                if (isJSDoc) {
+                    commentLines = commentLines.slice(1, commentLines.length - 1);
+                }
+
                 const tokenAfter = sourceCode.getTokenAfter(firstComment, { includeComments: true });
@@ -346,0 +385,0 @@

lib/rules/multiline-ternary.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "enforce newlines between operands of ternary expressions",
-            category: "Stylistic Issues",
+            description: "Enforce newlines between operands of ternary expressions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/multiline-ternary"
+            url: "https://eslint.org/docs/latest/rules/multiline-ternary"
         },
@@ -44,3 +44,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const option = context.options[0];
@@ -79,3 +79,3 @@ const multiline = option !== "never";
                             messageId: "unexpectedTestCons",
-                            fix: fixer => {
+                            fix(fixer) {
                                 if (hasComments) {
@@ -108,3 +108,3 @@ return null;
                             messageId: "unexpectedConsAlt",
-                            fix: fixer => {
+                            fix(fixer) {
                                 if (hasComments) {
@@ -111,0 +111,0 @@ return null;

lib/rules/new-cap.js

@@ -36,3 +36,4 @@ /**
  * @param {string} key Object key to check on `obj`.
- * @param {*} fallback If obj[key] is not present, this will be returned.
+ * @param {any} fallback If obj[key] is not present, this will be returned.
+ * @throws {TypeError} If key is not an own array type property of `obj`.
  * @returns {string[]} Returns obj[key] if it's an Array, otherwise `fallback`
@@ -42,6 +43,6 @@ */
 
-    /* istanbul ignore if */
+    /* c8 ignore start */
     if (Object.prototype.hasOwnProperty.call(obj, key) && !Array.isArray(obj[key])) {
         throw new TypeError(`${key}, if provided, must be an Array`);
-    }
+    }/* c8 ignore stop */
     return obj[key] || fallback;
@@ -80,2 +81,3 @@ }
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -86,6 +88,5 @@ meta: {
         docs: {
-            description: "require constructor names to begin with a capital letter",
-            category: "Stylistic Issues",
+            description: "Require constructor names to begin with a capital letter",
             recommended: false,
-            url: "https://eslint.org/docs/rules/new-cap"
+            url: "https://eslint.org/docs/latest/rules/new-cap"
         },
@@ -153,3 +154,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -156,0 +157,0 @@ //--------------------------------------------------------------------------

lib/rules/new-parens.js

@@ -22,2 +22,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -28,23 +29,13 @@ meta: {
         docs: {
-            description: "enforce or disallow parentheses when invoking a constructor with no arguments",
-            category: "Stylistic Issues",
+            description: "Enforce or disallow parentheses when invoking a constructor with no arguments",
             recommended: false,
-            url: "https://eslint.org/docs/rules/new-parens"
+            url: "https://eslint.org/docs/latest/rules/new-parens"
         },
 
         fixable: "code",
-        schema: {
-            anyOf: [
-                {
-                    type: "array",
-                    items: [
-                        {
-                            enum: ["always", "never"]
-                        }
-                    ],
-                    minItems: 0,
-                    maxItems: 1
-                }
-            ]
-        },
+        schema: [
+            {
+                enum: ["always", "never"]
+            }
+        ],
         messages: {
@@ -60,3 +51,3 @@ missing: "Missing '()' invoking a constructor.",
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -63,0 +54,0 @@ return {

lib/rules/newline-after-var.js

 /**
  * @fileoverview Rule to check empty newline after "var" statement
  * @author Gopal Venkatesan
- * @deprecated
+ * @deprecated in ESLint v4.0.0
  */
@@ -19,2 +19,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -25,6 +26,5 @@ meta: {
         docs: {
-            description: "require or disallow an empty line after variable declarations",
-            category: "Stylistic Issues",
+            description: "Require or disallow an empty line after variable declarations",
             recommended: false,
-            url: "https://eslint.org/docs/rules/newline-after-var"
+            url: "https://eslint.org/docs/latest/rules/newline-after-var"
         },
@@ -48,3 +48,3 @@ schema: [
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -151,5 +151,5 @@ // Default `mode` to "always".
          * Determine if a token starts more than one line after a comment ends
-         * @param  {token}   token            The token being checked
-         * @param {integer}  commentStartLine The line number on which the comment starts
-         * @returns {boolean}                 True if `token` does not start immediately after a comment
+         * @param {token} token The token being checked
+         * @param {integer} commentStartLine The line number on which the comment starts
+         * @returns {boolean} True if `token` does not start immediately after a comment
          */
@@ -219,3 +219,2 @@ function hasBlankLineAfterComment(token, commentStartLine) {
                     messageId: "unexpected",
-                    data: { identifier: node.name },
                     fix(fixer) {
@@ -239,3 +238,2 @@ const linesBetween = sourceCode.getText().slice(lastToken.range[1], nextToken.range[0]).split(astUtils.LINEBREAK_MATCHER);
                     messageId: "expected",
-                    data: { identifier: node.name },
                     fix(fixer) {
@@ -242,0 +240,0 @@ if ((noNextLineToken ? getLastCommentLineOfBlock(nextLineNum) : lastToken.loc.end.line) === nextToken.loc.start.line) {

lib/rules/newline-before-return.js

 /**
  * @fileoverview Rule to require newlines before `return` statement
  * @author Kai Cataldo
- * @deprecated
+ * @deprecated in ESLint v4.0.0
  */
@@ -12,2 +12,3 @@ "use strict";
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "require an empty line before `return` statements",
-            category: "Stylistic Issues",
+            description: "Require an empty line before `return` statements",
             recommended: false,
-            url: "https://eslint.org/docs/rules/newline-before-return"
+            url: "https://eslint.org/docs/latest/rules/newline-before-return"
         },
@@ -36,3 +36,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -53,3 +53,3 @@ //--------------------------------------------------------------------------
 
-            return testTokens.some(token => tokenBefore.value === token);
+            return testTokens.includes(tokenBefore.value);
         }
@@ -56,0 +56,0 @@

lib/rules/newline-per-chained-call.js

@@ -15,2 +15,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -21,6 +22,5 @@ meta: {
         docs: {
-            description: "require a newline after each call in a method chain",
-            category: "Stylistic Issues",
+            description: "Require a newline after each call in a method chain",
             recommended: false,
-            url: "https://eslint.org/docs/rules/newline-per-chained-call"
+            url: "https://eslint.org/docs/latest/rules/newline-per-chained-call"
         },
@@ -52,3 +52,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -59,3 +59,3 @@ /**
          * left bracket. If not it returns a period.
-         * @param  {ASTNode} node A MemberExpression node to get
+         * @param {ASTNode} node A MemberExpression node to get
          * @returns {string} The prefix of the node.
@@ -62,0 +62,0 @@ */

lib/rules/no-alert.js

@@ -85,2 +85,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -91,6 +92,5 @@ meta: {
         docs: {
-            description: "disallow the use of `alert`, `confirm`, and `prompt`",
-            category: "Best Practices",
+            description: "Disallow the use of `alert`, `confirm`, and `prompt`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-alert"
+            url: "https://eslint.org/docs/latest/rules/no-alert"
         },
@@ -106,6 +106,8 @@
     create(context) {
+        const sourceCode = context.sourceCode;
+
         return {
             CallExpression(node) {
                 const callee = skipChainExpression(node.callee),
-                    currentScope = context.getScope();
+                    currentScope = sourceCode.getScope(node);
 
@@ -112,0 +114,0 @@ // without window.

lib/rules/no-array-constructor.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow `Array` constructors",
-            category: "Stylistic Issues",
+            description: "Disallow `Array` constructors",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-array-constructor"
+            url: "https://eslint.org/docs/latest/rules/no-array-constructor"
         },
@@ -24,0 +24,0 @@

lib/rules/no-async-promise-executor.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "disallow using an async function as a Promise executor",
-            category: "Possible Errors",
+            description: "Disallow using an async function as a Promise executor",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-async-promise-executor"
+            url: "https://eslint.org/docs/latest/rules/no-async-promise-executor"
         },
@@ -35,3 +35,3 @@
                 context.report({
-                    node: context.getSourceCode().getFirstToken(node.arguments[0], token => token.value === "async"),
+                    node: context.sourceCode.getFirstToken(node.arguments[0], token => token.value === "async"),
                     messageId: "async"
@@ -38,0 +38,0 @@ });

lib/rules/no-await-in-loop.js

@@ -56,2 +56,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -62,6 +63,5 @@ meta: {
         docs: {
-            description: "disallow `await` inside of loops",
-            category: "Possible Errors",
+            description: "Disallow `await` inside of loops",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-await-in-loop"
+            url: "https://eslint.org/docs/latest/rules/no-await-in-loop"
         },
@@ -68,0 +68,0 @@

lib/rules/no-bitwise.js

@@ -23,2 +23,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -29,6 +30,5 @@ meta: {
         docs: {
-            description: "disallow bitwise operators",
-            category: "Stylistic Issues",
+            description: "Disallow bitwise operators",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-bitwise"
+            url: "https://eslint.org/docs/latest/rules/no-bitwise"
         },
@@ -68,3 +68,3 @@
          * Reports an unexpected use of a bitwise operator.
-         * @param   {ASTNode} node Node which contains the bitwise operator.
+         * @param {ASTNode} node Node which contains the bitwise operator.
          * @returns {void}
@@ -78,7 +78,7 @@ */
          * Checks if the given node has a bitwise operator.
-         * @param   {ASTNode} node The node to check.
+         * @param {ASTNode} node The node to check.
          * @returns {boolean} Whether or not the node has a bitwise operator.
          */
         function hasBitwiseOperator(node) {
-            return BITWISE_OPERATORS.indexOf(node.operator) !== -1;
+            return BITWISE_OPERATORS.includes(node.operator);
         }
@@ -88,7 +88,7 @@
          * Checks if exceptions were provided, e.g. `{ allow: ['~', '|'] }`.
-         * @param   {ASTNode} node The node to check.
+         * @param {ASTNode} node The node to check.
          * @returns {boolean} Whether or not the node has a bitwise operator.
          */
         function allowedOperator(node) {
-            return allowed.indexOf(node.operator) !== -1;
+            return allowed.includes(node.operator);
         }
@@ -98,3 +98,3 @@
          * Checks if the given bitwise operator is used for integer typecasting, i.e. "|0"
-         * @param   {ASTNode} node The node to check.
+         * @param {ASTNode} node The node to check.
          * @returns {boolean} whether the node is used in integer typecasting.
@@ -109,3 +109,3 @@ */
          * Report if the given node contains a bitwise operator.
-         * @param   {ASTNode} node The node to check.
+         * @param {ASTNode} node The node to check.
          * @returns {void}
@@ -112,0 +112,0 @@ */

lib/rules/no-buffer-constructor.js

 /**
  * @fileoverview disallow use of the Buffer() constructor
  * @author Teddy Katz
+ * @deprecated in ESLint v7.0.0
  */
@@ -11,2 +12,3 @@ "use strict";
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -21,6 +23,5 @@ meta: {
         docs: {
-            description: "disallow use of the `Buffer()` constructor",
-            category: "Node.js and CommonJS",
+            description: "Disallow use of the `Buffer()` constructor",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-buffer-constructor"
+            url: "https://eslint.org/docs/latest/rules/no-buffer-constructor"
         },
@@ -27,0 +28,0 @@

lib/rules/no-caller.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow the use of `arguments.caller` or `arguments.callee`",
-            category: "Best Practices",
+            description: "Disallow the use of `arguments.caller` or `arguments.callee`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-caller"
+            url: "https://eslint.org/docs/latest/rules/no-caller"
         },
@@ -24,0 +24,0 @@

lib/rules/no-case-declarations.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "disallow lexical declarations in case clauses",
-            category: "Best Practices",
+            description: "Disallow lexical declarations in case clauses",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-case-declarations"
+            url: "https://eslint.org/docs/latest/rules/no-case-declarations"
         },
@@ -23,0 +23,0 @@

lib/rules/no-catch-shadow.js

@@ -19,2 +19,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -25,6 +26,5 @@ meta: {
         docs: {
-            description: "disallow `catch` clause parameters from shadowing variables in the outer scope",
-            category: "Variables",
+            description: "Disallow `catch` clause parameters from shadowing variables in the outer scope",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-catch-shadow"
+            url: "https://eslint.org/docs/latest/rules/no-catch-shadow"
         },
@@ -44,2 +44,4 @@
 
+        const sourceCode = context.sourceCode;
+
         //--------------------------------------------------------------------------
@@ -66,3 +68,3 @@ // Helpers
             "CatchClause[param!=null]"(node) {
-                let scope = context.getScope();
+                let scope = sourceCode.getScope(node);
 
@@ -69,0 +71,0 @@ /*

lib/rules/no-class-assign.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "disallow reassigning class members",
-            category: "ECMAScript 6",
+            description: "Disallow reassigning class members",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-class-assign"
+            url: "https://eslint.org/docs/latest/rules/no-class-assign"
         },
@@ -36,2 +36,4 @@
 
+        const sourceCode = context.sourceCode;
+
         /**
@@ -55,3 +57,3 @@ * Finds and reports references that are non initializer and writable.
         function checkForClass(node) {
-            context.getDeclaredVariables(node).forEach(checkVariable);
+            sourceCode.getDeclaredVariables(node).forEach(checkVariable);
         }
@@ -58,0 +60,0 @@

lib/rules/no-compare-neg-zero.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "disallow comparing against -0",
-            category: "Possible Errors",
+            description: "Disallow comparing against -0",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-compare-neg-zero"
+            url: "https://eslint.org/docs/latest/rules/no-compare-neg-zero"
         },
@@ -23,0 +23,0 @@

lib/rules/no-cond-assign.js

@@ -31,2 +31,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -37,6 +38,5 @@ meta: {
         docs: {
-            description: "disallow assignment operators in conditional expressions",
-            category: "Possible Errors",
+            description: "Disallow assignment operators in conditional expressions",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-cond-assign"
+            url: "https://eslint.org/docs/latest/rules/no-cond-assign"
         },
@@ -62,3 +62,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -65,0 +65,0 @@ /**

lib/rules/no-confusing-arrow.js

@@ -28,2 +28,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -34,6 +35,5 @@ meta: {
         docs: {
-            description: "disallow arrow functions where they could be confused with comparisons",
-            category: "ECMAScript 6",
+            description: "Disallow arrow functions where they could be confused with comparisons",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-confusing-arrow"
+            url: "https://eslint.org/docs/latest/rules/no-confusing-arrow"
         },
@@ -46,3 +46,4 @@
             properties: {
-                allowParens: { type: "boolean", default: true }
+                allowParens: { type: "boolean", default: true },
+                onlyOneSimpleParam: { type: "boolean", default: false }
             },
@@ -60,3 +61,4 @@ additionalProperties: false
         const allowParens = config.allowParens || (config.allowParens === void 0);
-        const sourceCode = context.getSourceCode();
+        const onlyOneSimpleParam = config.onlyOneSimpleParam;
+        const sourceCode = context.sourceCode;
 
@@ -72,3 +74,5 @@
 
-            if (isConditional(body) && !(allowParens && astUtils.isParenthesised(sourceCode, body))) {
+            if (isConditional(body) &&
+                !(allowParens && astUtils.isParenthesised(sourceCode, body)) &&
+                !(onlyOneSimpleParam && !(node.params.length === 1 && node.params[0].type === "Identifier"))) {
                 context.report({
@@ -75,0 +79,0 @@ node,

lib/rules/no-console.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "disallow the use of `console`",
-            category: "Possible Errors",
+            description: "Disallow the use of `console`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-console"
+            url: "https://eslint.org/docs/latest/rules/no-console"
         },
@@ -56,2 +56,3 @@
         const allowed = options.allow || [];
+        const sourceCode = context.sourceCode;
 
@@ -78,3 +79,3 @@ /**
 
-            return propertyName && allowed.indexOf(propertyName) !== -1;
+            return propertyName && allowed.includes(propertyName);
         }
@@ -116,4 +117,4 @@
         return {
-            "Program:exit"() {
-                const scope = context.getScope();
+            "Program:exit"(node) {
+                const scope = sourceCode.getScope(node);
                 const consoleVar = astUtils.getVariableByName(scope, "console");
@@ -120,0 +121,0 @@ const shadowed = consoleVar && consoleVar.defs.length > 0;

lib/rules/no-const-assign.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "disallow reassigning `const` variables",
-            category: "ECMAScript 6",
+            description: "Disallow reassigning `const` variables",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-const-assign"
+            url: "https://eslint.org/docs/latest/rules/no-const-assign"
         },
@@ -36,2 +36,4 @@
 
+        const sourceCode = context.sourceCode;
+
         /**
@@ -51,3 +53,3 @@ * Finds and reports references that are non initializer and writable.
                 if (node.kind === "const") {
-                    context.getDeclaredVariables(node).forEach(checkVariable);
+                    sourceCode.getDeclaredVariables(node).forEach(checkVariable);
                 }
@@ -54,0 +56,0 @@ }

lib/rules/no-constant-condition.js

@@ -8,2 +8,4 @@ /**
 
+const { isConstant } = require("./utils/ast-utils");
+
 //------------------------------------------------------------------------------
@@ -17,2 +19,3 @@ // Helpers
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +26,5 @@ meta: {
         docs: {
-            description: "disallow constant expressions in conditions",
-            category: "Possible Errors",
+            description: "Disallow constant expressions in conditions",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-constant-condition"
+            url: "https://eslint.org/docs/latest/rules/no-constant-condition"
         },
@@ -52,2 +54,3 @@
             loopSetStack = [];
+        const sourceCode = context.sourceCode;
 
@@ -61,149 +64,2 @@ let loopsInCurrentScope = new Set();
         /**
-         * Returns literal's value converted to the Boolean type
-         * @param {ASTNode} node any `Literal` node
-         * @returns {boolean | null} `true` when node is truthy, `false` when node is falsy,
-         *  `null` when it cannot be determined.
-         */
-        function getBooleanValue(node) {
-            if (node.value === null) {
-
-                /*
-                 * it might be a null literal or bigint/regex literal in unsupported environments .
-                 * https://github.com/estree/estree/blob/14df8a024956ea289bd55b9c2226a1d5b8a473ee/es5.md#regexpliteral
-                 * https://github.com/estree/estree/blob/14df8a024956ea289bd55b9c2226a1d5b8a473ee/es2020.md#bigintliteral
-                 */
-
-                if (node.raw === "null") {
-                    return false;
-                }
-
-                // regex is always truthy
-                if (typeof node.regex === "object") {
-                    return true;
-                }
-
-                return null;
-            }
-
-            return !!node.value;
-        }
-
-        /**
-         * Checks if a branch node of LogicalExpression short circuits the whole condition
-         * @param {ASTNode} node The branch of main condition which needs to be checked
-         * @param {string} operator The operator of the main LogicalExpression.
-         * @returns {boolean} true when condition short circuits whole condition
-         */
-        function isLogicalIdentity(node, operator) {
-            switch (node.type) {
-                case "Literal":
-                    return (operator === "||" && getBooleanValue(node) === true) ||
-                           (operator === "&&" && getBooleanValue(node) === false);
-
-                case "UnaryExpression":
-                    return (operator === "&&" && node.operator === "void");
-
-                case "LogicalExpression":
-
-                    /*
-                     * handles `a && false || b`
-                     * `false` is an identity element of `&&` but not `||`
-                     */
-                    return operator === node.operator &&
-                             (
-                                 isLogicalIdentity(node.left, operator) ||
-                                 isLogicalIdentity(node.right, operator)
-                             );
-
-                case "AssignmentExpression":
-                    return ["||=", "&&="].includes(node.operator) &&
-                        operator === node.operator.slice(0, -1) &&
-                        isLogicalIdentity(node.right, operator);
-
-                // no default
-            }
-            return false;
-        }
-
-        /**
-         * Checks if a node has a constant truthiness value.
-         * @param {ASTNode} node The AST node to check.
-         * @param {boolean} inBooleanPosition `false` if checking branch of a condition.
-         *  `true` in all other cases
-         * @returns {Bool} true when node's truthiness is constant
-         * @private
-         */
-        function isConstant(node, inBooleanPosition) {
-
-            // node.elements can return null values in the case of sparse arrays ex. [,]
-            if (!node) {
-                return true;
-            }
-            switch (node.type) {
-                case "Literal":
-                case "ArrowFunctionExpression":
-                case "FunctionExpression":
-                case "ObjectExpression":
-                    return true;
-                case "TemplateLiteral":
-                    return (inBooleanPosition && node.quasis.some(quasi => quasi.value.cooked.length)) ||
-                        node.expressions.every(exp => isConstant(exp, inBooleanPosition));
-
-                case "ArrayExpression": {
-                    if (node.parent.type === "BinaryExpression" && node.parent.operator === "+") {
-                        return node.elements.every(element => isConstant(element, false));
-                    }
-                    return true;
-                }
-
-                case "UnaryExpression":
-                    if (
-                        node.operator === "void" ||
-                        node.operator === "typeof" && inBooleanPosition
-                    ) {
-                        return true;
-                    }
-
-                    if (node.operator === "!") {
-                        return isConstant(node.argument, true);
-                    }
-
-                    return isConstant(node.argument, false);
-
-                case "BinaryExpression":
-                    return isConstant(node.left, false) &&
-                            isConstant(node.right, false) &&
-                            node.operator !== "in";
-
-                case "LogicalExpression": {
-                    const isLeftConstant = isConstant(node.left, inBooleanPosition);
-                    const isRightConstant = isConstant(node.right, inBooleanPosition);
-                    const isLeftShortCircuit = (isLeftConstant && isLogicalIdentity(node.left, node.operator));
-                    const isRightShortCircuit = (inBooleanPosition && isRightConstant && isLogicalIdentity(node.right, node.operator));
-
-                    return (isLeftConstant && isRightConstant) ||
-                        isLeftShortCircuit ||
-                        isRightShortCircuit;
-                }
-
-                case "AssignmentExpression":
-                    if (node.operator === "=") {
-                        return isConstant(node.right, inBooleanPosition);
-                    }
-
-                    if (["||=", "&&="].includes(node.operator) && inBooleanPosition) {
-                        return isLogicalIdentity(node.right, node.operator.slice(0, -1));
-                    }
-
-                    return false;
-
-                case "SequenceExpression":
-                    return isConstant(node.expressions[node.expressions.length - 1], inBooleanPosition);
-
-                // no default
-            }
-            return false;
-        }
-
-        /**
          * Tracks when the given node contains a constant condition.
@@ -215,3 +71,3 @@ * @param {ASTNode} node The AST node to check.
         function trackConstantConditionLoop(node) {
-            if (node.test && isConstant(node.test, true)) {
+            if (node.test && isConstant(sourceCode.getScope(node), node.test, true)) {
                 loopsInCurrentScope.add(node);
@@ -241,3 +97,3 @@ }
         function reportIfConstant(node) {
-            if (node.test && isConstant(node.test, true)) {
+            if (node.test && isConstant(sourceCode.getScope(node), node.test, true)) {
                 context.report({ node: node.test, messageId: "unexpected" });
@@ -244,0 +100,0 @@ }

lib/rules/no-constructor-return.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow returning value from constructor",
-            category: "Best Practices",
+            description: "Disallow returning value from constructor",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-constructor-return"
+            url: "https://eslint.org/docs/latest/rules/no-constructor-return"
         },
@@ -24,0 +24,0 @@

lib/rules/no-continue.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow `continue` statements",
-            category: "Stylistic Issues",
+            description: "Disallow `continue` statements",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-continue"
+            url: "https://eslint.org/docs/latest/rules/no-continue"
         },
@@ -24,0 +24,0 @@

lib/rules/no-control-regex.js

@@ -8,3 +8,3 @@ /**
 
-const RegExpValidator = require("regexpp").RegExpValidator;
+const RegExpValidator = require("@eslint-community/regexpp").RegExpValidator;
 const collector = new (class {
@@ -18,2 +18,12 @@ constructor() {
     onPatternEnter() {
+
+        /*
+         * `RegExpValidator` may parse the pattern twice in one `validatePattern`.
+         * So `this._controlChars` should be cleared here as well.
+         *
+         * For example, the `/(?<a>\x1f)/` regex will parse the pattern twice.
+         * This is based on the content described in Annex B.
+         * If the regex contains a `GroupName` and the `u` flag is not used, `ParseText` will be called twice.
+         * See https://tc39.es/ecma262/2023/multipage/additional-ecmascript-features-for-web-browsers.html#sec-parsepattern-annexb
+         */
         this._controlChars = [];
@@ -35,6 +45,11 @@ }
 
-    collectControlChars(regexpStr) {
+    collectControlChars(regexpStr, flags) {
+        const uFlag = typeof flags === "string" && flags.includes("u");
+        const vFlag = typeof flags === "string" && flags.includes("v");
+
+        this._controlChars = [];
+        this._source = regexpStr;
+
         try {
-            this._source = regexpStr;
-            this._validator.validatePattern(regexpStr); // Call onCharacter hook
+            this._validator.validatePattern(regexpStr, void 0, void 0, { unicode: uFlag, unicodeSets: vFlag }); // Call onCharacter hook
         } catch {
@@ -52,2 +67,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -58,6 +74,5 @@ meta: {
         docs: {
-            description: "disallow control characters in regular expressions",
-            category: "Possible Errors",
+            description: "Disallow control characters in regular expressions",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-control-regex"
+            url: "https://eslint.org/docs/latest/rules/no-control-regex"
         },
@@ -76,9 +91,11 @@
          * Get the regex expression
-         * @param {ASTNode} node node to evaluate
-         * @returns {RegExp|null} Regex if found else null
+         * @param {ASTNode} node `Literal` node to evaluate
+         * @returns {{ pattern: string, flags: string | null } | null} Regex if found (the given node is either a regex literal
+         * or a string literal that is the pattern argument of a RegExp constructor call). Otherwise `null`. If flags cannot be determined,
+         * the `flags` property will be `null`.
          * @private
          */
-        function getRegExpPattern(node) {
+        function getRegExp(node) {
             if (node.regex) {
-                return node.regex.pattern;
+                return node.regex;
             }
@@ -91,3 +108,11 @@ if (typeof node.value === "string" &&
             ) {
-                return node.value;
+                const pattern = node.value;
+                const flags =
+                    node.parent.arguments.length > 1 &&
+                    node.parent.arguments[1].type === "Literal" &&
+                    typeof node.parent.arguments[1].value === "string"
+                        ? node.parent.arguments[1].value
+                        : null;
+
+                return { pattern, flags };
             }
@@ -100,6 +125,7 @@
             Literal(node) {
-                const pattern = getRegExpPattern(node);
+                const regExp = getRegExp(node);
 
-                if (pattern) {
-                    const controlCharacters = collector.collectControlChars(pattern);
+                if (regExp) {
+                    const { pattern, flags } = regExp;
+                    const controlCharacters = collector.collectControlChars(pattern, flags);
 
@@ -106,0 +132,0 @@ if (controlCharacters.length > 0) {

lib/rules/no-debugger.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow the use of `debugger`",
-            category: "Possible Errors",
+            description: "Disallow the use of `debugger`",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-debugger"
+            url: "https://eslint.org/docs/latest/rules/no-debugger"
         },
@@ -24,0 +24,0 @@

lib/rules/no-delete-var.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow deleting variables",
-            category: "Variables",
+            description: "Disallow deleting variables",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-delete-var"
+            url: "https://eslint.org/docs/latest/rules/no-delete-var"
         },
@@ -24,0 +24,0 @@

lib/rules/no-div-regex.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow division operators explicitly at the beginning of regular expressions",
-            category: "Best Practices",
+            description: "Disallow equal signs explicitly at the beginning of regular expressions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-div-regex"
+            url: "https://eslint.org/docs/latest/rules/no-div-regex"
         },
@@ -35,3 +35,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -38,0 +38,0 @@ return {

lib/rules/no-dupe-args.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow duplicate arguments in `function` definitions",
-            category: "Possible Errors",
+            description: "Disallow duplicate arguments in `function` definitions",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-dupe-args"
+            url: "https://eslint.org/docs/latest/rules/no-dupe-args"
         },
@@ -34,2 +34,4 @@
 
+        const sourceCode = context.sourceCode;
+
         //--------------------------------------------------------------------------
@@ -55,3 +57,3 @@ // Helpers
         function checkParams(node) {
-            const variables = context.getDeclaredVariables(node);
+            const variables = sourceCode.getDeclaredVariables(node);
 
@@ -58,0 +60,0 @@ for (let i = 0; i < variables.length; ++i) {

lib/rules/no-dupe-class-members.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "disallow duplicate class members",
-            category: "ECMAScript 6",
+            description: "Disallow duplicate class members",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-dupe-class-members"
+            url: "https://eslint.org/docs/latest/rules/no-dupe-class-members"
         },
@@ -78,6 +78,7 @@
             // Reports the node if its name has been declared already.
-            MethodDefinition(node) {
+            "MethodDefinition, PropertyDefinition"(node) {
                 const name = astUtils.getStaticPropertyName(node);
+                const kind = node.type === "MethodDefinition" ? node.kind : "field";
 
-                if (name === null || node.kind === "constructor") {
+                if (name === null || kind === "constructor") {
                     return;
@@ -89,6 +90,6 @@ }
 
-                if (node.kind === "get") {
+                if (kind === "get") {
                     isDuplicate = (state.init || state.get);
                     state.get = true;
-                } else if (node.kind === "set") {
+                } else if (kind === "set") {
                     isDuplicate = (state.init || state.set);
@@ -95,0 +96,0 @@ state.set = true;

lib/rules/no-dupe-else-if.js

@@ -49,2 +49,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -55,6 +56,5 @@ meta: {
         docs: {
-            description: "disallow duplicate conditions in if-else-if chains",
-            category: "Possible Errors",
+            description: "Disallow duplicate conditions in if-else-if chains",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-dupe-else-if"
+            url: "https://eslint.org/docs/latest/rules/no-dupe-else-if"
         },
@@ -70,3 +70,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -73,0 +73,0 @@ /**

lib/rules/no-dupe-keys.js

@@ -26,3 +26,2 @@ /**
 
-    // eslint-disable-next-line jsdoc/require-description
     /**
@@ -87,2 +86,3 @@ * @param {ObjectInfo|null} upper The information of the outer object.
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -93,6 +93,5 @@ meta: {
         docs: {
-            description: "disallow duplicate keys in object literals",
-            category: "Possible Errors",
+            description: "Disallow duplicate keys in object literals",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-dupe-keys"
+            url: "https://eslint.org/docs/latest/rules/no-dupe-keys"
         },
@@ -99,0 +98,0 @@

lib/rules/no-duplicate-case.js

@@ -19,2 +19,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -25,6 +26,5 @@ meta: {
         docs: {
-            description: "disallow duplicate case labels",
-            category: "Possible Errors",
+            description: "Disallow duplicate case labels",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-duplicate-case"
+            url: "https://eslint.org/docs/latest/rules/no-duplicate-case"
         },
@@ -40,3 +40,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -43,0 +43,0 @@ /**

lib/rules/no-duplicate-imports.js

@@ -8,2 +8,12 @@ /**
 //------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const NAMED_TYPES = ["ImportSpecifier", "ExportSpecifier"];
+const NAMESPACE_TYPES = [
+    "ImportNamespaceSpecifier",
+    "ExportNamespaceSpecifier"
+];
+
+//------------------------------------------------------------------------------
 // Rule Definition
@@ -13,83 +23,206 @@ //------------------------------------------------------------------------------
 /**
- * Returns the name of the module imported or re-exported.
+ * Check if an import/export type belongs to (ImportSpecifier|ExportSpecifier) or (ImportNamespaceSpecifier|ExportNamespaceSpecifier).
+ * @param {string} importExportType An import/export type to check.
+ * @param {string} type Can be "named" or "namespace"
+ * @returns {boolean} True if import/export type belongs to (ImportSpecifier|ExportSpecifier) or (ImportNamespaceSpecifier|ExportNamespaceSpecifier) and false if it doesn't.
+ */
+function isImportExportSpecifier(importExportType, type) {
+    const arrayToCheck = type === "named" ? NAMED_TYPES : NAMESPACE_TYPES;
+
+    return arrayToCheck.includes(importExportType);
+}
+
+/**
+ * Return the type of (import|export).
  * @param {ASTNode} node A node to get.
- * @returns {string} the name of the module, or empty string if no name.
+ * @returns {string} The type of the (import|export).
  */
-function getValue(node) {
-    if (node && node.source && node.source.value) {
-        return node.source.value.trim();
+function getImportExportType(node) {
+    if (node.specifiers && node.specifiers.length > 0) {
+        const nodeSpecifiers = node.specifiers;
+        const index = nodeSpecifiers.findIndex(
+            ({ type }) =>
+                isImportExportSpecifier(type, "named") ||
+                isImportExportSpecifier(type, "namespace")
+        );
+        const i = index > -1 ? index : 0;
+
+        return nodeSpecifiers[i].type;
     }
+    if (node.type === "ExportAllDeclaration") {
+        if (node.exported) {
+            return "ExportNamespaceSpecifier";
+        }
+        return "ExportAll";
+    }
+    return "SideEffectImport";
+}
 
-    return "";
+/**
+ * Returns a boolean indicates if two (import|export) can be merged
+ * @param {ASTNode} node1 A node to check.
+ * @param {ASTNode} node2 A node to check.
+ * @returns {boolean} True if two (import|export) can be merged, false if they can't.
+ */
+function isImportExportCanBeMerged(node1, node2) {
+    const importExportType1 = getImportExportType(node1);
+    const importExportType2 = getImportExportType(node2);
+
+    if (
+        (importExportType1 === "ExportAll" &&
+            importExportType2 !== "ExportAll" &&
+            importExportType2 !== "SideEffectImport") ||
+        (importExportType1 !== "ExportAll" &&
+            importExportType1 !== "SideEffectImport" &&
+            importExportType2 === "ExportAll")
+    ) {
+        return false;
+    }
+    if (
+        (isImportExportSpecifier(importExportType1, "namespace") &&
+            isImportExportSpecifier(importExportType2, "named")) ||
+        (isImportExportSpecifier(importExportType2, "namespace") &&
+            isImportExportSpecifier(importExportType1, "named"))
+    ) {
+        return false;
+    }
+    return true;
 }
 
 /**
- * Checks if the name of the import or export exists in the given array, and reports if so.
- * @param {RuleContext} context The ESLint rule context object.
- * @param {ASTNode} node A node to get.
- * @param {string} value The name of the imported or exported module.
- * @param {string[]} array The array containing other imports or exports in the file.
- * @param {string} messageId A messageId to be reported after the name of the module
- *
- * @returns {void} No return value
+ * Returns a boolean if we should report (import|export).
+ * @param {ASTNode} node A node to be reported or not.
+ * @param {[ASTNode]} previousNodes An array contains previous nodes of the module imported or exported.
+ * @returns {boolean} True if the (import|export) should be reported.
  */
-function checkAndReport(context, node, value, array, messageId) {
-    if (array.indexOf(value) !== -1) {
-        context.report({
-            node,
-            messageId,
-            data: {
-                module: value
-            }
-        });
+function shouldReportImportExport(node, previousNodes) {
+    let i = 0;
+
+    while (i < previousNodes.length) {
+        if (isImportExportCanBeMerged(node, previousNodes[i])) {
+            return true;
+        }
+        i++;
     }
+    return false;
 }
 
 /**
- * @callback nodeCallback
- * @param {ASTNode} node A node to handle.
+ * Returns array contains only nodes with declarations types equal to type.
+ * @param {[{node: ASTNode, declarationType: string}]} nodes An array contains objects, each object contains a node and a declaration type.
+ * @param {string} type Declaration type.
+ * @returns {[ASTNode]} An array contains only nodes with declarations types equal to type.
  */
+function getNodesByDeclarationType(nodes, type) {
+    return nodes
+        .filter(({ declarationType }) => declarationType === type)
+        .map(({ node }) => node);
+}
 
 /**
- * Returns a function handling the imports of a given file
+ * Returns the name of the module imported or re-exported.
+ * @param {ASTNode} node A node to get.
+ * @returns {string} The name of the module, or empty string if no name.
+ */
+function getModule(node) {
+    if (node && node.source && node.source.value) {
+        return node.source.value.trim();
+    }
+    return "";
+}
+
+/**
+ * Checks if the (import|export) can be merged with at least one import or one export, and reports if so.
  * @param {RuleContext} context The ESLint rule context object.
+ * @param {ASTNode} node A node to get.
+ * @param {Map} modules A Map object contains as a key a module name and as value an array contains objects, each object contains a node and a declaration type.
+ * @param {string} declarationType A declaration type can be an import or export.
  * @param {boolean} includeExports Whether or not to check for exports in addition to imports.
- * @param {string[]} importsInFile The array containing other imports in the file.
- * @param {string[]} exportsInFile The array containing other exports in the file.
- *
- * @returns {nodeCallback} A function passed to ESLint to handle the statement.
+ * @returns {void} No return value.
  */
-function handleImports(context, includeExports, importsInFile, exportsInFile) {
-    return function(node) {
-        const value = getValue(node);
+function checkAndReport(
+    context,
+    node,
+    modules,
+    declarationType,
+    includeExports
+) {
+    const module = getModule(node);
 
-        if (value) {
-            checkAndReport(context, node, value, importsInFile, "import");
+    if (modules.has(module)) {
+        const previousNodes = modules.get(module);
+        const messagesIds = [];
+        const importNodes = getNodesByDeclarationType(previousNodes, "import");
+        let exportNodes;
 
+        if (includeExports) {
+            exportNodes = getNodesByDeclarationType(previousNodes, "export");
+        }
+        if (declarationType === "import") {
+            if (shouldReportImportExport(node, importNodes)) {
+                messagesIds.push("import");
+            }
             if (includeExports) {
-                checkAndReport(context, node, value, exportsInFile, "importAs");
+                if (shouldReportImportExport(node, exportNodes)) {
+                    messagesIds.push("importAs");
+                }
             }
-
-            importsInFile.push(value);
+        } else if (declarationType === "export") {
+            if (shouldReportImportExport(node, exportNodes)) {
+                messagesIds.push("export");
+            }
+            if (shouldReportImportExport(node, importNodes)) {
+                messagesIds.push("exportAs");
+            }
         }
-    };
+        messagesIds.forEach(messageId =>
+            context.report({
+                node,
+                messageId,
+                data: {
+                    module
+                }
+            }));
+    }
 }
 
 /**
- * Returns a function handling the exports of a given file
+ * @callback nodeCallback
+ * @param {ASTNode} node A node to handle.
+ */
+
+/**
+ * Returns a function handling the (imports|exports) of a given file
  * @param {RuleContext} context The ESLint rule context object.
- * @param {string[]} importsInFile The array containing other imports in the file.
- * @param {string[]} exportsInFile The array containing other exports in the file.
- *
+ * @param {Map} modules A Map object contains as a key a module name and as value an array contains objects, each object contains a node and a declaration type.
+ * @param {string} declarationType A declaration type can be an import or export.
+ * @param {boolean} includeExports Whether or not to check for exports in addition to imports.
  * @returns {nodeCallback} A function passed to ESLint to handle the statement.
  */
-function handleExports(context, importsInFile, exportsInFile) {
+function handleImportsExports(
+    context,
+    modules,
+    declarationType,
+    includeExports
+) {
     return function(node) {
-        const value = getValue(node);
+        const module = getModule(node);
 
-        if (value) {
-            checkAndReport(context, node, value, exportsInFile, "export");
-            checkAndReport(context, node, value, importsInFile, "exportAs");
+        if (module) {
+            checkAndReport(
+                context,
+                node,
+                modules,
+                declarationType,
+                includeExports
+            );
+            const currentNode = { node, declarationType };
+            let nodes = [currentNode];
 
-            exportsInFile.push(value);
+            if (modules.has(module)) {
+                const previousNodes = modules.get(module);
+
+                nodes = [...previousNodes, currentNode];
+            }
+            modules.set(module, nodes);
         }
@@ -99,2 +232,3 @@ };
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -105,18 +239,20 @@ meta: {
         docs: {
-            description: "disallow duplicate module imports",
-            category: "ECMAScript 6",
+            description: "Disallow duplicate module imports",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-duplicate-imports"
+            url: "https://eslint.org/docs/latest/rules/no-duplicate-imports"
         },
 
-        schema: [{
-            type: "object",
-            properties: {
-                includeExports: {
-                    type: "boolean",
-                    default: false
-                }
-            },
-            additionalProperties: false
-        }],
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    includeExports: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
+
         messages: {
@@ -132,16 +268,28 @@ import: "'{{module}}' import is duplicated.",
         const includeExports = (context.options[0] || {}).includeExports,
-            importsInFile = [],
-            exportsInFile = [];
-
+            modules = new Map();
         const handlers = {
-            ImportDeclaration: handleImports(context, includeExports, importsInFile, exportsInFile)
+            ImportDeclaration: handleImportsExports(
+                context,
+                modules,
+                "import",
+                includeExports
+            )
         };
 
         if (includeExports) {
-            handlers.ExportNamedDeclaration = handleExports(context, importsInFile, exportsInFile);
-            handlers.ExportAllDeclaration = handleExports(context, importsInFile, exportsInFile);
+            handlers.ExportNamedDeclaration = handleImportsExports(
+                context,
+                modules,
+                "export",
+                includeExports
+            );
+            handlers.ExportAllDeclaration = handleImportsExports(
+                context,
+                modules,
+                "export",
+                includeExports
+            );
         }
-
         return handlers;
     }
 };

lib/rules/no-else-return.js

@@ -19,2 +19,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -25,6 +26,5 @@ meta: {
         docs: {
-            description: "disallow `else` blocks after `return` statements in `if` statements",
-            category: "Best Practices",
+            description: "Disallow `else` blocks after `return` statements in `if` statements",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-else-return"
+            url: "https://eslint.org/docs/latest/rules/no-else-return"
         },
@@ -52,2 +52,4 @@
 
+        const sourceCode = context.sourceCode;
+
         //--------------------------------------------------------------------------
@@ -175,21 +177,20 @@ // Helpers
          * Display the context report if rule is violated
-         * @param {Node} node The 'else' node
+         * @param {Node} elseNode The 'else' node
          * @returns {void}
          */
-        function displayReport(node) {
-            const currentScope = context.getScope();
+        function displayReport(elseNode) {
+            const currentScope = sourceCode.getScope(elseNode.parent);
 
             context.report({
-                node,
+                node: elseNode,
                 messageId: "unexpected",
-                fix: fixer => {
+                fix(fixer) {
 
-                    if (!isSafeFromNameCollisions(node, currentScope)) {
+                    if (!isSafeFromNameCollisions(elseNode, currentScope)) {
                         return null;
                     }
 
-                    const sourceCode = context.getSourceCode();
-                    const startToken = sourceCode.getFirstToken(node);
+                    const startToken = sourceCode.getFirstToken(elseNode);
                     const elseToken = sourceCode.getTokenBefore(startToken);
-                    const source = sourceCode.getText(node);
+                    const source = sourceCode.getText(elseNode);
                     const lastIfToken = sourceCode.getTokenBefore(elseToken);
@@ -210,3 +211,3 @@ let fixedSource, firstTokenOfElseBlock;
                      */
-                    const ifBlockMaybeUnsafe = node.parent.consequent.type !== "BlockStatement" && lastIfToken.value !== ";";
+                    const ifBlockMaybeUnsafe = elseNode.parent.consequent.type !== "BlockStatement" && lastIfToken.value !== ";";
                     const elseBlockUnsafe = /^[([/+`-]/u.test(firstTokenOfElseBlock.value);
@@ -218,3 +219,3 @@
 
-                    const endToken = sourceCode.getLastToken(node);
+                    const endToken = sourceCode.getLastToken(elseNode);
                     const lastTokenOfElseBlock = sourceCode.getTokenBefore(endToken);
@@ -253,4 +254,4 @@
                     return new FixTracker(fixer, sourceCode)
-                        .retainEnclosingFunction(node)
-                        .replaceTextRange([elseToken.range[0], node.range[1]], fixedSource);
+                        .retainEnclosingFunction(elseNode)
+                        .replaceTextRange([elseToken.range[0], elseNode.range[1]], fixedSource);
                 }
@@ -257,0 +258,0 @@ });

lib/rules/no-empty-character-class.js

@@ -9,18 +9,13 @@ /**
 //------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { RegExpParser, visitRegExpAST } = require("@eslint-community/regexpp");
+
+//------------------------------------------------------------------------------
 // Helpers
 //------------------------------------------------------------------------------
 
-/*
- * plain-English description of the following regexp:
- * 0. `^` fix the match at the beginning of the string
- * 1. `\/`: the `/` that begins the regexp
- * 2. `([^\\[]|\\.|\[([^\\\]]|\\.)+\])*`: regexp contents; 0 or more of the following
- * 2.0. `[^\\[]`: any character that's not a `\` or a `[` (anything but escape sequences and character classes)
- * 2.1. `\\.`: an escape sequence
- * 2.2. `\[([^\\\]]|\\.)+\]`: a character class that isn't empty
- * 3. `\/` the `/` that ends the regexp
- * 4. `[gimuy]*`: optional regexp flags
- * 5. `$`: fix the match at the end of the string
- */
-const regex = /^\/([^\\[]|\\.|\[([^\\\]]|\\.)+\])*\/[gimuys]*$/u;
+const parser = new RegExpParser();
+const QUICK_TEST_REGEX = /\[\]/u;
 
@@ -31,2 +26,3 @@ //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -37,6 +33,5 @@ meta: {
         docs: {
-            description: "disallow empty character classes in regular expressions",
-            category: "Possible Errors",
+            description: "Disallow empty character classes in regular expressions",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-empty-character-class"
+            url: "https://eslint.org/docs/latest/rules/no-empty-character-class"
         },
@@ -52,14 +47,31 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
-
         return {
+            "Literal[regex]"(node) {
+                const { pattern, flags } = node.regex;
 
-            Literal(node) {
-                const token = sourceCode.getFirstToken(node);
+                if (!QUICK_TEST_REGEX.test(pattern)) {
+                    return;
+                }
 
-                if (token.type === "RegularExpression" && !regex.test(token.value)) {
-                    context.report({ node, messageId: "unexpected" });
+                let regExpAST;
+
+                try {
+                    regExpAST = parser.parsePattern(pattern, 0, pattern.length, {
+                        unicode: flags.includes("u"),
+                        unicodeSets: flags.includes("v")
+                    });
+                } catch {
+
+                    // Ignore regular expressions that regexpp cannot parse
+                    return;
                 }
+
+                visitRegExpAST(regExpAST, {
+                    onCharacterClassEnter(characterClass) {
+                        if (!characterClass.negate && characterClass.elements.length === 0) {
+                            context.report({ node, messageId: "unexpected" });
+                        }
+                    }
+                });
             }
-
         };
@@ -66,0 +78,0 @@

lib/rules/no-empty-function.js

@@ -92,2 +92,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -98,6 +99,5 @@ meta: {
         docs: {
-            description: "disallow empty functions",
-            category: "Best Practices",
+            description: "Disallow empty functions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-empty-function"
+            url: "https://eslint.org/docs/latest/rules/no-empty-function"
         },
@@ -128,3 +128,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -150,3 +150,3 @@ /**
 
-            if (allowed.indexOf(kind) === -1 &&
+            if (!allowed.includes(kind) &&
                 node.body.type === "BlockStatement" &&
@@ -153,0 +153,0 @@ node.body.body.length === 0 &&

lib/rules/no-empty-pattern.js

@@ -7,2 +7,4 @@ /**
 
+const astUtils = require("./utils/ast-utils");
+
 //------------------------------------------------------------------------------
@@ -12,2 +14,3 @@ // Rule Definition
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,9 +21,19 @@ meta: {
         docs: {
-            description: "disallow empty destructuring patterns",
-            category: "Best Practices",
+            description: "Disallow empty destructuring patterns",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-empty-pattern"
+            url: "https://eslint.org/docs/latest/rules/no-empty-pattern"
         },
 
-        schema: [],
+        schema: [
+            {
+                type: "object",
+                properties: {
+                    allowObjectPatternsAsParameters: {
+                        type: "boolean",
+                        default: false
+                    }
+                },
+                additionalProperties: false
+            }
+        ],
 
@@ -33,7 +46,29 @@ messages: {
     create(context) {
+        const options = context.options[0] || {},
+            allowObjectPatternsAsParameters = options.allowObjectPatternsAsParameters || false;
+
         return {
             ObjectPattern(node) {
-                if (node.properties.length === 0) {
-                    context.report({ node, messageId: "unexpected", data: { type: "object" } });
+
+                if (node.properties.length > 0) {
+                    return;
                 }
+
+                // Allow {} and {} = {} empty object patterns as parameters when allowObjectPatternsAsParameters is true
+                if (
+                    allowObjectPatternsAsParameters &&
+                    (
+                        astUtils.isFunction(node.parent) ||
+                        (
+                            node.parent.type === "AssignmentPattern" &&
+                            astUtils.isFunction(node.parent.parent) &&
+                            node.parent.right.type === "ObjectExpression" &&
+                            node.parent.right.properties.length === 0
+                        )
+                    )
+                ) {
+                    return;
+                }
+
+                context.report({ node, messageId: "unexpected", data: { type: "object" } });
             },
@@ -40,0 +75,0 @@ ArrayPattern(node) {

lib/rules/no-empty.js

@@ -17,11 +17,12 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
     meta: {
+        hasSuggestions: true,
         type: "suggestion",
 
         docs: {
-            description: "disallow empty block statements",
-            category: "Possible Errors",
+            description: "Disallow empty block statements",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-empty"
+            url: "https://eslint.org/docs/latest/rules/no-empty"
         },
@@ -43,3 +44,4 @@
         messages: {
-            unexpected: "Empty {{type}} statement."
+            unexpected: "Empty {{type}} statement.",
+            suggestComment: "Add comment inside empty {{type}} statement."
         }
@@ -52,3 +54,3 @@ },
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -77,3 +79,18 @@ return {
 
-                context.report({ node, messageId: "unexpected", data: { type: "block" } });
+                context.report({
+                    node,
+                    messageId: "unexpected",
+                    data: { type: "block" },
+                    suggest: [
+                        {
+                            messageId: "suggestComment",
+                            data: { type: "block" },
+                            fix(fixer) {
+                                const range = [node.range[0] + 1, node.range[1] - 1];
+
+                                return fixer.replaceTextRange(range, " /* empty */ ");
+                            }
+                        }
+                    ]
+                });
             },
@@ -80,0 +97,0 @@

lib/rules/no-eq-null.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "disallow `null` comparisons without type-checking operators",
-            category: "Best Practices",
+            description: "Disallow `null` comparisons without type-checking operators",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-eq-null"
+            url: "https://eslint.org/docs/latest/rules/no-eq-null"
         },
@@ -25,0 +25,0 @@

lib/rules/no-eval.js

@@ -40,2 +40,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -46,6 +47,5 @@ meta: {
         docs: {
-            description: "disallow the use of `eval()`",
-            category: "Best Practices",
+            description: "Disallow the use of `eval()`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-eval"
+            url: "https://eslint.org/docs/latest/rules/no-eval"
         },
@@ -73,16 +73,19 @@
         );
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         let funcInfo = null;
 
         /**
-         * Pushs a variable scope (Program or Function) information to the stack.
+         * Pushes a `this` scope (non-arrow function, class static block, or class field initializer) information to the stack.
+         * Top-level scopes are handled separately.
          *
          * This is used in order to check whether or not `this` binding is a
          * reference to the global object.
-         * @param {ASTNode} node A node of the scope. This is one of Program,
-         *      FunctionDeclaration, FunctionExpression, and ArrowFunctionExpression.
+         * @param {ASTNode} node A node of the scope.
+         *      For functions, this is one of FunctionDeclaration, FunctionExpression.
+         *      For class static blocks, this is StaticBlock.
+         *      For class field initializers, this can be any node that is PropertyDefinition#value.
          * @returns {void}
          */
-        function enterVarScope(node) {
-            const strict = context.getScope().isStrict;
+        function enterThisScope(node) {
+            const strict = sourceCode.getScope(node).isStrict;
 
@@ -93,2 +96,3 @@ funcInfo = {
                 strict,
+                isTopLevelOfScript: false,
                 defaultThis: false,
@@ -103,3 +107,3 @@ initialized: strict
          */
-        function exitVarScope() {
+        function exitThisScope() {
             funcInfo = funcInfo.upper;
@@ -225,3 +229,3 @@ }
             Program(node) {
-                const scope = context.getScope(),
+                const scope = sourceCode.getScope(node),
                     features = context.parserOptions.ecmaFeatures || {},
@@ -231,3 +235,4 @@ strict =
                         node.sourceType === "module" ||
-                        (features.globalReturn && scope.childScopes[0].isStrict);
+                        (features.globalReturn && scope.childScopes[0].isStrict),
+                    isTopLevelOfScript = node.sourceType !== "module" && !features.globalReturn;
 
@@ -238,2 +243,3 @@ funcInfo = {
                     strict,
+                    isTopLevelOfScript,
                     defaultThis: true,
@@ -244,6 +250,6 @@ initialized: true
 
-            "Program:exit"() {
-                const globalScope = context.getScope();
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
 
-                exitVarScope();
+                exitThisScope();
                 reportAccessingEval(globalScope);
@@ -253,8 +259,10 @@ reportAccessingEvalViaGlobalObject(globalScope);
 
-            FunctionDeclaration: enterVarScope,
-            "FunctionDeclaration:exit": exitVarScope,
-            FunctionExpression: enterVarScope,
-            "FunctionExpression:exit": exitVarScope,
-            ArrowFunctionExpression: enterVarScope,
-            "ArrowFunctionExpression:exit": exitVarScope,
+            FunctionDeclaration: enterThisScope,
+            "FunctionDeclaration:exit": exitThisScope,
+            FunctionExpression: enterThisScope,
+            "FunctionExpression:exit": exitThisScope,
+            "PropertyDefinition > *.value": enterThisScope,
+            "PropertyDefinition > *.value:exit": exitThisScope,
+            StaticBlock: enterThisScope,
+            "StaticBlock:exit": exitThisScope,
 
@@ -278,3 +286,4 @@ ThisExpression(node) {
 
-                if (!funcInfo.strict && funcInfo.defaultThis) {
+                // `this` at the top level of scripts always refers to the global object
+                if (funcInfo.isTopLevelOfScript || (!funcInfo.strict && funcInfo.defaultThis)) {
 
@@ -281,0 +290,0 @@ // `this.eval` is possible built-in `eval`.

lib/rules/no-ex-assign.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "disallow reassigning exceptions in `catch` clauses",
-            category: "Possible Errors",
+            description: "Disallow reassigning exceptions in `catch` clauses",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-ex-assign"
+            url: "https://eslint.org/docs/latest/rules/no-ex-assign"
         },
@@ -36,2 +36,4 @@
 
+        const sourceCode = context.sourceCode;
+
         /**
@@ -50,3 +52,3 @@ * Finds and reports references that are non initializer and writable.
             CatchClause(node) {
-                context.getDeclaredVariables(node).forEach(checkVariable);
+                sourceCode.getDeclaredVariables(node).forEach(checkVariable);
             }
@@ -53,0 +55,0 @@ };

lib/rules/no-extend-native.js

@@ -19,2 +19,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -25,6 +26,5 @@ meta: {
         docs: {
-            description: "disallow extending native types",
-            category: "Best Practices",
+            description: "Disallow extending native types",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-extend-native"
+            url: "https://eslint.org/docs/latest/rules/no-extend-native"
         },
@@ -56,2 +56,3 @@
         const config = context.options[0] || {};
+        const sourceCode = context.sourceCode;
         const exceptions = new Set(config.exceptions || []);
@@ -165,4 +166,4 @@ const modifiedBuiltins = new Set(
 
-            "Program:exit"() {
-                const globalScope = context.getScope();
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
 
@@ -169,0 +170,0 @@ modifiedBuiltins.forEach(builtin => {

lib/rules/no-extra-bind.js

@@ -23,2 +23,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -29,6 +30,5 @@ meta: {
         docs: {
-            description: "disallow unnecessary calls to `.bind()`",
-            category: "Best Practices",
+            description: "Disallow unnecessary calls to `.bind()`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-extra-bind"
+            url: "https://eslint.org/docs/latest/rules/no-extra-bind"
         },
@@ -45,3 +45,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         let scopeInfo = null;
@@ -48,0 +48,0 @@

lib/rules/no-extra-boolean-cast.js

@@ -13,3 +13,3 @@ /**
 const astUtils = require("./utils/ast-utils");
-const eslintUtils = require("eslint-utils");
+const eslintUtils = require("@eslint-community/eslint-utils");
 
@@ -22,2 +22,3 @@ const precedence = astUtils.getPrecedence;
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -28,6 +29,5 @@ meta: {
         docs: {
-            description: "disallow unnecessary boolean casts",
-            category: "Possible Errors",
+            description: "Disallow unnecessary boolean casts",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-extra-boolean-cast"
+            url: "https://eslint.org/docs/latest/rules/no-extra-boolean-cast"
         },
@@ -54,6 +54,6 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
         // Node types which have a test which will coerce values to booleans.
-        const BOOLEAN_NODE_TYPES = [
+        const BOOLEAN_NODE_TYPES = new Set([
             "IfStatement",
@@ -64,3 +64,3 @@ "DoWhileStatement",
             "ForStatement"
-        ];
+        ]);
 
@@ -103,3 +103,3 @@ /**
 
-                (BOOLEAN_NODE_TYPES.indexOf(node.parent.type) !== -1 &&
+                (BOOLEAN_NODE_TYPES.has(node.parent.type) &&
                     node === node.parent.test) ||
@@ -159,2 +159,3 @@
          * @param {ASTNode} node The node to check.
+         * @throws {Error} (Unreachable.)
          * @returns {boolean} `true` if the node needs to be parenthesized.
@@ -197,3 +198,3 @@ */
 
-                /* istanbul ignore next */
+                /* c8 ignore next */
                 default:
@@ -200,0 +201,0 @@ throw new Error(`Unexpected parent type: ${parent.type}`);

lib/rules/no-extra-label.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "disallow unnecessary labels",
-            category: "Best Practices",
+            description: "Disallow unnecessary labels",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-extra-label"
+            url: "https://eslint.org/docs/latest/rules/no-extra-label"
         },
@@ -40,3 +40,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         let scopeInfo = null;
@@ -43,0 +43,0 @@

lib/rules/no-extra-parens.js

@@ -11,5 +11,6 @@ /**
 
-const { isParenthesized: isParenthesizedRaw } = require("eslint-utils");
+const { isParenthesized: isParenthesizedRaw } = require("@eslint-community/eslint-utils");
 const astUtils = require("./utils/ast-utils.js");
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "disallow unnecessary parentheses",
-            category: "Possible Errors",
+            description: "Disallow unnecessary parentheses",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-extra-parens"
+            url: "https://eslint.org/docs/latest/rules/no-extra-parens"
         },
@@ -51,2 +51,3 @@
                                 conditionalAssign: { type: "boolean" },
+                                ternaryOperandBinaryExpressions: { type: "boolean" },
                                 nestedBinaryExpressions: { type: "boolean" },
@@ -58,3 +59,4 @@ returnAssign: { type: "boolean" },
                                 enforceForNewInMemberExpressions: { type: "boolean" },
-                                enforceForFunctionPrototypeMethods: { type: "boolean" }
+                                enforceForFunctionPrototypeMethods: { type: "boolean" },
+                                allowParensAfterCommentPattern: { type: "string" }
                             },
@@ -76,3 +78,3 @@ additionalProperties: false
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -83,2 +85,3 @@ const tokensToIgnore = new WeakSet();
         const EXCEPT_COND_ASSIGN = ALL_NODES && context.options[1] && context.options[1].conditionalAssign === false;
+        const EXCEPT_COND_TERNARY = ALL_NODES && context.options[1] && context.options[1].ternaryOperandBinaryExpressions === false;
         const NESTED_BINARY = ALL_NODES && context.options[1] && context.options[1].nestedBinaryExpressions === false;
@@ -95,2 +98,3 @@ const EXCEPT_RETURN_ASSIGN = ALL_NODES && context.options[1] && context.options[1].returnAssign === false;
             context.options[1].enforceForFunctionPrototypeMethods === false;
+        const ALLOW_PARENS_AFTER_COMMENT_PATTERN = ALL_NODES && context.options[1] && context.options[1].allowParensAfterCommentPattern;
 
@@ -395,2 +399,26 @@ const PRECEDENCE_OF_ASSIGNMENT_EXPR = precedence({ type: "AssignmentExpression" });
         /**
+         * Checks if a node is fixable.
+         * A node is fixable if removing a single pair of surrounding parentheses does not turn it
+         * into a directive after fixing other nodes.
+         * Almost all nodes are fixable, except if all of the following conditions are met:
+         * The node is a string Literal
+         * It has a single pair of parentheses
+         * It is the only child of an ExpressionStatement
+         * @param {ASTNode} node The node to evaluate.
+         * @returns {boolean} Whether or not the node is fixable.
+         * @private
+         */
+        function isFixable(node) {
+
+            // if it's not a string literal it can be autofixed
+            if (node.type !== "Literal" || typeof node.value !== "string") {
+                return true;
+            }
+            if (isParenthesisedTwice(node)) {
+                return true;
+            }
+            return !astUtils.isTopLevelExpressionStatement(node.parent);
+        }
+
+        /**
          * Report the node
@@ -413,2 +441,15 @@ * @param {ASTNode} node node to evaluate
                 }
+
+                if (ALLOW_PARENS_AFTER_COMMENT_PATTERN) {
+                    const commentsBeforeLeftParenToken = sourceCode.getCommentsBefore(leftParenToken);
+                    const totalCommentsBeforeLeftParenTokenCount = commentsBeforeLeftParenToken.length;
+                    const ignorePattern = new RegExp(ALLOW_PARENS_AFTER_COMMENT_PATTERN, "u");
+
+                    if (
+                        totalCommentsBeforeLeftParenTokenCount > 0 &&
+                        ignorePattern.test(commentsBeforeLeftParenToken[totalCommentsBeforeLeftParenTokenCount - 1].value)
+                    ) {
+                        return;
+                    }
+                }
             }
@@ -426,10 +467,12 @@
                     messageId: "unexpected",
-                    fix(fixer) {
-                        const parenthesizedSource = sourceCode.text.slice(leftParenToken.range[1], rightParenToken.range[0]);
+                    fix: isFixable(node)
+                        ? fixer => {
+                            const parenthesizedSource = sourceCode.text.slice(leftParenToken.range[1], rightParenToken.range[0]);
 
-                        return fixer.replaceTextRange([
-                            leftParenToken.range[0],
-                            rightParenToken.range[1]
-                        ], (requiresLeadingSpace(node) ? " " : "") + parenthesizedSource + (requiresTrailingSpace(node) ? " " : ""));
-                    }
+                            return fixer.replaceTextRange([
+                                leftParenToken.range[0],
+                                rightParenToken.range[1]
+                            ], (requiresLeadingSpace(node) ? " " : "") + parenthesizedSource + (requiresTrailingSpace(node) ? " " : ""));
+                        }
+                        : null
                 });
@@ -647,6 +690,6 @@ }
 
-                /* istanbul ignore if */
+                /* c8 ignore start */
                 if (currentNode === null) {
                     throw new Error("Nodes are not in the ancestor-descendant relationship.");
-                }
+                }/* c8 ignore stop */
 
@@ -765,2 +808,34 @@ path.push(currentNode);
 
+        /**
+         * Checks if the left-hand side of an assignment is an identifier, the operator is one of
+         * `=`, `&&=`, `||=` or `??=` and the right-hand side is an anonymous class or function.
+         *
+         * As per https://tc39.es/ecma262/#sec-assignment-operators-runtime-semantics-evaluation, an
+         * assignment involving one of the operators `=`, `&&=`, `||=` or `??=` where the right-hand
+         * side is an anonymous class or function and the left-hand side is an *unparenthesized*
+         * identifier has different semantics than other assignments.
+         * Specifically, when an expression like `foo = function () {}` is evaluated, `foo.name`
+         * will be set to the string "foo", i.e. the identifier name. The same thing does not happen
+         * when evaluating `(foo) = function () {}`.
+         * Since the parenthesizing of the identifier in the left-hand side is significant in this
+         * special case, the parentheses, if present, should not be flagged as unnecessary.
+         * @param {ASTNode} node an AssignmentExpression node.
+         * @returns {boolean} `true` if the left-hand side of the assignment is an identifier, the
+         * operator is one of `=`, `&&=`, `||=` or `??=` and the right-hand side is an anonymous
+         * class or function; otherwise, `false`.
+         */
+        function isAnonymousFunctionAssignmentException({ left, operator, right }) {
+            if (left.type === "Identifier" && ["=", "&&=", "||=", "??="].includes(operator)) {
+                const rhsType = right.type;
+
+                if (rhsType === "ArrowFunctionExpression") {
+                    return true;
+                }
+                if ((rhsType === "FunctionExpression" || rhsType === "ClassExpression") && !right.id) {
+                    return true;
+                }
+            }
+            return false;
+        }
+
         return {
@@ -804,3 +879,4 @@ ArrayExpression(node) {
             AssignmentExpression(node) {
-                if (canBeAssignmentTarget(node.left) && hasExcessParens(node.left)) {
+                if (canBeAssignmentTarget(node.left) && hasExcessParens(node.left) &&
+                    (!isAnonymousFunctionAssignmentException(node) || isParenthesisedTwice(node.left))) {
                     report(node.left);
@@ -824,9 +900,2 @@ }
 
-            ClassBody(node) {
-                node.body
-                    .filter(member => member.type === "MethodDefinition" && member.computed && member.key)
-                    .filter(member => hasExcessParensWithPrecedence(member.key, PRECEDENCE_OF_ASSIGNMENT_EXPR))
-                    .forEach(member => report(member.key));
-            },
-
             ConditionalExpression(node) {
@@ -836,3 +905,7 @@ if (isReturnAssignException(node)) {
                 }
+
+                const availableTypes = new Set(["BinaryExpression", "LogicalExpression"]);
+
                 if (
+                    !(EXCEPT_COND_TERNARY && availableTypes.has(node.test.type)) &&
                     !isCondAssignException(node) &&
@@ -844,7 +917,11 @@ hasExcessParensWithPrecedence(node.test, precedence({ type: "LogicalExpression", operator: "||" }))
 
-                if (hasExcessParensWithPrecedence(node.consequent, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
+                if (
+                    !(EXCEPT_COND_TERNARY && availableTypes.has(node.consequent.type)) &&
+                    hasExcessParensWithPrecedence(node.consequent, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
                     report(node.consequent);
                 }
 
-                if (hasExcessParensWithPrecedence(node.alternate, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
+                if (
+                    !(EXCEPT_COND_TERNARY && availableTypes.has(node.alternate.type)) &&
+                    hasExcessParensWithPrecedence(node.alternate, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
                     report(node.alternate);
@@ -1082,2 +1159,8 @@ }
 
+            "MethodDefinition[computed=true]"(node) {
+                if (hasExcessParensWithPrecedence(node.key, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
+                    report(node.key);
+                }
+            },
+
             NewExpression: checkCallNew,
@@ -1110,2 +1193,12 @@
 
+            PropertyDefinition(node) {
+                if (node.computed && hasExcessParensWithPrecedence(node.key, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
+                    report(node.key);
+                }
+
+                if (node.value && hasExcessParensWithPrecedence(node.value, PRECEDENCE_OF_ASSIGNMENT_EXPR)) {
+                    report(node.value);
+                }
+            },
+
             RestElement(node) {
@@ -1112,0 +1205,0 @@ const argument = node.argument;

lib/rules/no-extra-semi.js

@@ -19,2 +19,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -25,6 +26,5 @@ meta: {
         docs: {
-            description: "disallow unnecessary semicolons",
-            category: "Possible Errors",
+            description: "Disallow unnecessary semicolons",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-extra-semi"
+            url: "https://eslint.org/docs/latest/rules/no-extra-semi"
         },
@@ -41,5 +41,22 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
         /**
+         * Checks if a node or token is fixable.
+         * A node is fixable if it can be removed without turning a subsequent statement into a directive after fixing other nodes.
+         * @param {Token} nodeOrToken The node or token to check.
+         * @returns {boolean} Whether or not the node is fixable.
+         */
+        function isFixable(nodeOrToken) {
+            const nextToken = sourceCode.getTokenAfter(nodeOrToken);
+
+            if (!nextToken || nextToken.type !== "String") {
+                return true;
+            }
+            const stringNode = sourceCode.getNodeByRangeIndex(nextToken.range[0]);
+
+            return !astUtils.isTopLevelExpressionStatement(stringNode.parent);
+        }
+
+        /**
          * Reports an unnecessary semicolon error.
@@ -53,13 +70,14 @@ * @param {Node|Token} nodeOrToken A node or a token to be reported.
                 messageId: "unexpected",
-                fix(fixer) {
+                fix: isFixable(nodeOrToken)
+                    ? fixer =>
 
-                    /*
-                     * Expand the replacement range to include the surrounding
-                     * tokens to avoid conflicting with semi.
-                     * https://github.com/eslint/eslint/issues/7928
-                     */
-                    return new FixTracker(fixer, context.getSourceCode())
-                        .retainSurroundingTokens(nodeOrToken)
-                        .remove(nodeOrToken);
-                }
+                        /*
+                         * Expand the replacement range to include the surrounding
+                         * tokens to avoid conflicting with semi.
+                         * https://github.com/eslint/eslint/issues/7928
+                         */
+                        new FixTracker(fixer, context.sourceCode)
+                            .retainSurroundingTokens(nodeOrToken)
+                            .remove(nodeOrToken)
+                    : null
             });
@@ -105,3 +123,3 @@ }
 
-                if (allowedParentTypes.indexOf(parent.type) === -1) {
+                if (!allowedParentTypes.includes(parent.type)) {
                     report(node);
@@ -125,3 +143,3 @@ }
              */
-            MethodDefinition(node) {
+            "MethodDefinition, PropertyDefinition, StaticBlock"(node) {
                 checkForPartOfClassBody(sourceCode.getTokenAfter(node));
@@ -128,0 +146,0 @@ }

lib/rules/no-fallthrough.js

@@ -11,3 +11,3 @@ /**
 
-const lodash = require("lodash");
+const { directivesPattern } = require("../shared/directives");
 
@@ -21,25 +21,53 @@ //------------------------------------------------------------------------------
 /**
- * Checks whether or not a given node has a fallthrough comment.
- * @param {ASTNode} node A SwitchCase node to get comments.
- * @param {RuleContext} context A rule context which stores comments.
- * @param {RegExp} fallthroughCommentPattern A pattern to match comment to.
- * @returns {boolean} `true` if the node has a valid fallthrough comment.
+ * Checks all segments in a set and returns true if any are reachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if any segment is reachable; false otherwise.
  */
-function hasFallthroughComment(node, context, fallthroughCommentPattern) {
-    const sourceCode = context.getSourceCode();
-    const comment = lodash.last(sourceCode.getCommentsBefore(node));
+function isAnySegmentReachable(segments) {
 
-    return Boolean(comment && fallthroughCommentPattern.test(comment.value));
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return true;
+        }
+    }
+
+    return false;
 }
 
 /**
- * Checks whether or not a given code path segment is reachable.
- * @param {CodePathSegment} segment A CodePathSegment to check.
- * @returns {boolean} `true` if the segment is reachable.
+ * Checks whether or not a given comment string is really a fallthrough comment and not an ESLint directive.
+ * @param {string} comment The comment string to check.
+ * @param {RegExp} fallthroughCommentPattern The regular expression used for checking for fallthrough comments.
+ * @returns {boolean} `true` if the comment string is truly a fallthrough comment.
  */
-function isReachable(segment) {
-    return segment.reachable;
+function isFallThroughComment(comment, fallthroughCommentPattern) {
+    return fallthroughCommentPattern.test(comment) && !directivesPattern.test(comment.trim());
 }
 
 /**
+ * Checks whether or not a given case has a fallthrough comment.
+ * @param {ASTNode} caseWhichFallsThrough SwitchCase node which falls through.
+ * @param {ASTNode} subsequentCase The case after caseWhichFallsThrough.
+ * @param {RuleContext} context A rule context which stores comments.
+ * @param {RegExp} fallthroughCommentPattern A pattern to match comment to.
+ * @returns {boolean} `true` if the case has a valid fallthrough comment.
+ */
+function hasFallthroughComment(caseWhichFallsThrough, subsequentCase, context, fallthroughCommentPattern) {
+    const sourceCode = context.sourceCode;
+
+    if (caseWhichFallsThrough.consequent.length === 1 && caseWhichFallsThrough.consequent[0].type === "BlockStatement") {
+        const trailingCloseBrace = sourceCode.getLastToken(caseWhichFallsThrough.consequent[0]);
+        const commentInBlock = sourceCode.getCommentsBefore(trailingCloseBrace).pop();
+
+        if (commentInBlock && isFallThroughComment(commentInBlock.value, fallthroughCommentPattern)) {
+            return true;
+        }
+    }
+
+    const comment = sourceCode.getCommentsBefore(subsequentCase).pop();
+
+    return Boolean(comment && isFallThroughComment(comment.value, fallthroughCommentPattern));
+}
+
+/**
  * Checks whether a node and a token are separated by blank lines
@@ -58,2 +86,3 @@ * @param {ASTNode} node The node to check
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -64,6 +93,5 @@ meta: {
         docs: {
-            description: "disallow fallthrough of `case` statements",
-            category: "Best Practices",
+            description: "Disallow fallthrough of `case` statements",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-fallthrough"
+            url: "https://eslint.org/docs/latest/rules/no-fallthrough"
         },
@@ -78,2 +106,6 @@
                         default: ""
+                    },
+                    allowEmptyCase: {
+                        type: "boolean",
+                        default: false
                     }
@@ -92,4 +124,6 @@ },
         const options = context.options[0] || {};
-        let currentCodePath = null;
-        const sourceCode = context.getSourceCode();
+        const codePathSegments = [];
+        let currentCodePathSegments = new Set();
+        const sourceCode = context.sourceCode;
+        const allowEmptyCase = options.allowEmptyCase || false;
 
@@ -108,11 +142,30 @@ /*
         }
+        return {
 
-        return {
-            onCodePathStart(codePath) {
-                currentCodePath = codePath;
+            onCodePathStart() {
+                codePathSegments.push(currentCodePathSegments);
+                currentCodePathSegments = new Set();
             },
+
             onCodePathEnd() {
-                currentCodePath = currentCodePath.upper;
+                currentCodePathSegments = codePathSegments.pop();
             },
 
+            onUnreachableCodePathSegmentStart(segment) {
+                currentCodePathSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                currentCodePathSegments.delete(segment);
+            },
+
+            onCodePathSegmentStart(segment) {
+                currentCodePathSegments.add(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                currentCodePathSegments.delete(segment);
+            },
+
+
             SwitchCase(node) {
@@ -124,3 +177,4 @@
                  */
-                if (fallthroughCase && !hasFallthroughComment(node, context, fallthroughCommentPattern)) {
+
+                if (fallthroughCase && (!hasFallthroughComment(fallthroughCase, node, context, fallthroughCommentPattern))) {
                     context.report({
@@ -142,5 +196,5 @@ messageId: node.test ? "case" : "default",
                  */
-                if (currentCodePath.currentSegments.some(isReachable) &&
-                    (node.consequent.length > 0 || hasBlankLinesBetween(node, nextToken)) &&
-                    lodash.last(node.parent.cases) !== node) {
+                if (isAnySegmentReachable(currentCodePathSegments) &&
+                    (node.consequent.length > 0 || (!allowEmptyCase && hasBlankLinesBetween(node, nextToken))) &&
+                    node.parent.cases[node.parent.cases.length - 1] !== node) {
                     fallthroughCase = node;
@@ -147,0 +201,0 @@ }

lib/rules/no-floating-decimal.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "disallow leading or trailing decimal points in numeric literals",
-            category: "Best Practices",
+            description: "Disallow leading or trailing decimal points in numeric literals",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-floating-decimal"
+            url: "https://eslint.org/docs/latest/rules/no-floating-decimal"
         },
@@ -40,3 +40,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -43,0 +43,0 @@ return {

lib/rules/no-func-assign.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "disallow reassigning `function` declarations",
-            category: "Possible Errors",
+            description: "Disallow reassigning `function` declarations",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-func-assign"
+            url: "https://eslint.org/docs/latest/rules/no-func-assign"
         },
@@ -36,2 +36,4 @@
 
+        const sourceCode = context.sourceCode;
+
         /**
@@ -71,3 +73,3 @@ * Reports a reference if is non initializer and writable.
         function checkForFunction(node) {
-            context.getDeclaredVariables(node).forEach(checkVariable);
+            sourceCode.getDeclaredVariables(node).forEach(checkVariable);
         }
@@ -74,0 +76,0 @@

lib/rules/no-global-assign.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow assignments to native objects or read-only global variables",
-            category: "Best Practices",
+            description: "Disallow assignments to native objects or read-only global variables",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-global-assign"
+            url: "https://eslint.org/docs/latest/rules/no-global-assign"
         },
@@ -46,2 +46,3 @@
         const config = context.options[0];
+        const sourceCode = context.sourceCode;
         const exceptions = (config && config.exceptions) || [];
@@ -84,3 +85,3 @@
         function checkVariable(variable) {
-            if (variable.writeable === false && exceptions.indexOf(variable.name) === -1) {
+            if (variable.writeable === false && !exceptions.includes(variable.name)) {
                 variable.references.forEach(checkReference);
@@ -91,4 +92,4 @@ }
         return {
-            Program() {
-                const globalScope = context.getScope();
+            Program(node) {
+                const globalScope = sourceCode.getScope(node);
 
@@ -95,0 +96,0 @@ globalScope.variables.forEach(checkVariable);

lib/rules/no-implicit-coercion.js

@@ -27,2 +27,3 @@ /**
         string: "string" in options ? options.string : true,
+        disallowTemplateShorthand: "disallowTemplateShorthand" in options ? options.disallowTemplateShorthand : false,
         allow: options.allow || []
@@ -33,5 +34,5 @@ };
 /**
- * Checks whether or not a node is a double logical nigating.
+ * Checks whether or not a node is a double logical negating.
  * @param {ASTNode} node An UnaryExpression node to check.
- * @returns {boolean} Whether or not the node is a double logical nigating.
+ * @returns {boolean} Whether or not the node is a double logical negating.
  */
@@ -76,2 +77,20 @@ function isDoubleLogicalNegating(node) {
 /**
+ * Checks whether the given node logically represents multiplication by a fraction of `1`.
+ * For example, `a * 1` in `a * 1 / b` is technically multiplication by `1`, but the
+ * whole expression can be logically interpreted as `a * (1 / b)` rather than `(a * 1) / b`.
+ * @param {BinaryExpression} node A BinaryExpression node to check.
+ * @param {SourceCode} sourceCode The source code object.
+ * @returns {boolean} Whether or not the node is a multiplying by a fraction of `1`.
+ */
+function isMultiplyByFractionOfOne(node, sourceCode) {
+    return node.type === "BinaryExpression" &&
+        node.operator === "*" &&
+        (node.right.type === "Literal" && node.right.value === 1) &&
+        node.parent.type === "BinaryExpression" &&
+        node.parent.operator === "/" &&
+        node.parent.left === node &&
+        !astUtils.isParenthesised(sourceCode, node);
+}
+
+/**
  * Checks whether the result of a node is numeric or not
@@ -115,2 +134,16 @@ * @param {ASTNode} node The node to test
 /**
+ * Checks whether an expression evaluates to a string.
+ * @param {ASTNode} node node that represents the expression to check.
+ * @returns {boolean} Whether or not the expression evaluates to a string.
+ */
+function isStringType(node) {
+    return astUtils.isStringLiteral(node) ||
+        (
+            node.type === "CallExpression" &&
+            node.callee.type === "Identifier" &&
+            node.callee.name === "String"
+        );
+}
+
+/**
  * Checks whether a node is an empty string literal or not.
@@ -132,4 +165,4 @@ * @param {ASTNode} node The node to check.
     return node.operator === "+" && (
-        (isEmptyString(node.left) && !astUtils.isStringLiteral(node.right)) ||
-        (isEmptyString(node.right) && !astUtils.isStringLiteral(node.left))
+        (isEmptyString(node.left) && !isStringType(node.right)) ||
+        (isEmptyString(node.right) && !isStringType(node.left))
     );
@@ -160,2 +193,3 @@ }
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -166,6 +200,5 @@ meta: {
         docs: {
-            description: "disallow shorthand type conversions",
-            category: "Best Practices",
+            description: "Disallow shorthand type conversions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-implicit-coercion"
+            url: "https://eslint.org/docs/latest/rules/no-implicit-coercion"
         },
@@ -190,2 +223,6 @@
                 },
+                disallowTemplateShorthand: {
+                    type: "boolean",
+                    default: false
+                },
                 allow: {
@@ -209,3 +246,3 @@ type: "array",
         const options = parseOptions(context.options[0] || {});
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -250,3 +287,3 @@ /**
                 // !!foo
-                operatorAllowed = options.allow.indexOf("!!") >= 0;
+                operatorAllowed = options.allow.includes("!!");
                 if (!operatorAllowed && options.boolean && isDoubleLogicalNegating(node)) {
@@ -259,3 +296,3 @@ const recommendation = `Boolean(${sourceCode.getText(node.argument.argument)})`;
                 // ~foo.indexOf(bar)
-                operatorAllowed = options.allow.indexOf("~") >= 0;
+                operatorAllowed = options.allow.includes("~");
                 if (!operatorAllowed && options.boolean && isBinaryNegatingOfIndexOf(node)) {
@@ -271,3 +308,3 @@
                 // +foo
-                operatorAllowed = options.allow.indexOf("+") >= 0;
+                operatorAllowed = options.allow.includes("+");
                 if (!operatorAllowed && options.number && node.operator === "+" && !isNumeric(node.argument)) {
@@ -285,4 +322,5 @@ const recommendation = `Number(${sourceCode.getText(node.argument)})`;
                 // 1 * foo
-                operatorAllowed = options.allow.indexOf("*") >= 0;
-                const nonNumericOperand = !operatorAllowed && options.number && isMultiplyByOne(node) && getNonNumericOperand(node);
+                operatorAllowed = options.allow.includes("*");
+                const nonNumericOperand = !operatorAllowed && options.number && isMultiplyByOne(node) && !isMultiplyByFractionOfOne(node, sourceCode) &&
+                    getNonNumericOperand(node);
 
@@ -296,3 +334,3 @@ if (nonNumericOperand) {
                 // "" + foo
-                operatorAllowed = options.allow.indexOf("+") >= 0;
+                operatorAllowed = options.allow.includes("+");
                 if (!operatorAllowed && options.string && isConcatWithEmptyString(node)) {
@@ -308,3 +346,3 @@ const recommendation = `String(${sourceCode.getText(getNonEmptyOperand(node))})`;
                 // foo += ""
-                const operatorAllowed = options.allow.indexOf("+") >= 0;
+                const operatorAllowed = options.allow.includes("+");
 
@@ -317,2 +355,39 @@ if (!operatorAllowed && options.string && isAppendEmptyString(node)) {
                 }
+            },
+
+            TemplateLiteral(node) {
+                if (!options.disallowTemplateShorthand) {
+                    return;
+                }
+
+                // tag`${foo}`
+                if (node.parent.type === "TaggedTemplateExpression") {
+                    return;
+                }
+
+                // `` or `${foo}${bar}`
+                if (node.expressions.length !== 1) {
+                    return;
+                }
+
+
+                //  `prefix${foo}`
+                if (node.quasis[0].value.cooked !== "") {
+                    return;
+                }
+
+                //  `${foo}postfix`
+                if (node.quasis[1].value.cooked !== "") {
+                    return;
+                }
+
+                // if the expression is already a string, then this isn't a coercion
+                if (isStringType(node.expressions[0])) {
+                    return;
+                }
+
+                const code = sourceCode.getText(node.expressions[0]);
+                const recommendation = `String(${code})`;
+
+                report(node, recommendation, true);
             }
@@ -319,0 +394,0 @@ };

lib/rules/no-implicit-globals.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow declarations in the global scope",
-            category: "Best Practices",
+            description: "Disallow declarations in the global scope",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-implicit-globals"
+            url: "https://eslint.org/docs/latest/rules/no-implicit-globals"
         },
@@ -48,2 +48,3 @@
         const checkLexicalBindings = context.options[0] && context.options[0].lexicalBindings === true;
+        const sourceCode = context.sourceCode;
 
@@ -68,4 +69,4 @@ /**
         return {
-            Program() {
-                const scope = context.getScope();
+            Program(node) {
+                const scope = sourceCode.getScope(node);
 
@@ -84,2 +85,7 @@ scope.variables.forEach(variable => {
 
+                    // Variables exported by "exported" block comments
+                    if (variable.eslintExported) {
+                        return;
+                    }
+
                     variable.defs.forEach(def => {
@@ -86,0 +92,0 @@ const defNode = def.node;

lib/rules/no-implied-eval.js

@@ -13,3 +13,3 @@ /**
 const astUtils = require("./utils/ast-utils");
-const { getStaticValue } = require("eslint-utils");
+const { getStaticValue } = require("@eslint-community/eslint-utils");
 
@@ -20,2 +20,3 @@ //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -26,6 +27,5 @@ meta: {
         docs: {
-            description: "disallow the use of `eval()`-like methods",
-            category: "Best Practices",
+            description: "Disallow the use of `eval()`-like methods",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-implied-eval"
+            url: "https://eslint.org/docs/latest/rules/no-implied-eval"
         },
@@ -43,2 +43,3 @@
         const EVAL_LIKE_FUNC_PATTERN = /^(?:set(?:Interval|Timeout)|execScript)$/u;
+        const sourceCode = context.sourceCode;
 
@@ -73,3 +74,3 @@ /**
 
-                const staticValue = getStaticValue(firstArgument, context.getScope());
+                const staticValue = getStaticValue(firstArgument, sourceCode.getScope(node));
                 const isStaticString = staticValue && typeof staticValue.value === "string";
@@ -125,4 +126,4 @@ const isString = isStaticString || isEvaluatedString(firstArgument);
             },
-            "Program:exit"() {
-                const globalScope = context.getScope();
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
 
@@ -129,0 +130,0 @@ GLOBAL_CANDIDATES

lib/rules/no-import-assign.js

@@ -12,3 +12,3 @@ /**
 
-const { findVariable } = require("eslint-utils");
+const { findVariable } = require("@eslint-community/eslint-utils");
 const astUtils = require("./utils/ast-utils");
@@ -178,2 +178,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -184,6 +185,5 @@ meta: {
         docs: {
-            description: "disallow assigning to imported bindings",
-            category: "Possible Errors",
+            description: "Disallow assigning to imported bindings",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-import-assign"
+            url: "https://eslint.org/docs/latest/rules/no-import-assign"
         },
@@ -200,7 +200,9 @@
     create(context) {
+        const sourceCode = context.sourceCode;
+
         return {
             ImportDeclaration(node) {
-                const scope = context.getScope();
+                const scope = sourceCode.getScope(node);
 
-                for (const variable of context.getDeclaredVariables(node)) {
+                for (const variable of sourceCode.getDeclaredVariables(node)) {
                     const shouldCheckMembers = variable.defs.some(
@@ -207,0 +209,0 @@ d => d.node.type === "ImportNamespaceSpecifier"

lib/rules/no-inline-comments.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "disallow inline comments after code",
-            category: "Stylistic Issues",
+            description: "Disallow inline comments after code",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-inline-comments"
+            url: "https://eslint.org/docs/latest/rules/no-inline-comments"
         },
@@ -44,3 +44,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const options = context.options[0];
@@ -47,0 +47,0 @@ let customIgnoreRegExp;

lib/rules/no-inner-declarations.js

@@ -18,5 +18,30 @@ /**
 
-const validParent = new Set(["Program", "ExportNamedDeclaration", "ExportDefaultDeclaration"]);
+const validParent = new Set(["Program", "StaticBlock", "ExportNamedDeclaration", "ExportDefaultDeclaration"]);
 const validBlockStatementParent = new Set(["FunctionDeclaration", "FunctionExpression", "ArrowFunctionExpression"]);
 
+/**
+ * Finds the nearest enclosing context where this rule allows declarations and returns its description.
+ * @param {ASTNode} node Node to search from.
+ * @returns {string} Description. One of "program", "function body", "class static block body".
+ */
+function getAllowedBodyDescription(node) {
+    let { parent } = node;
+
+    while (parent) {
+
+        if (parent.type === "StaticBlock") {
+            return "class static block body";
+        }
+
+        if (astUtils.isFunction(parent)) {
+            return "function body";
+        }
+
+        ({ parent } = parent);
+    }
+
+    return "program";
+}
+
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -27,6 +52,5 @@ meta: {
         docs: {
-            description: "disallow variable or `function` declarations in nested blocks",
-            category: "Possible Errors",
+            description: "Disallow variable or `function` declarations in nested blocks",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-inner-declarations"
+            url: "https://eslint.org/docs/latest/rules/no-inner-declarations"
         },
@@ -65,4 +89,2 @@
 
-            const upperFunction = astUtils.getUpperFunction(parent);
-
             context.report({
@@ -73,3 +95,3 @@ node,
                     type: (node.type === "FunctionDeclaration" ? "function" : "variable"),
-                    body: (upperFunction === null ? "program" : "function body")
+                    body: getAllowedBodyDescription(node)
                 }
@@ -76,0 +98,0 @@ });

lib/rules/no-invalid-regexp.js

@@ -11,5 +11,5 @@ /**
 
-const RegExpValidator = require("regexpp").RegExpValidator;
+const RegExpValidator = require("@eslint-community/regexpp").RegExpValidator;
 const validator = new RegExpValidator();
-const validFlags = /[gimuys]/gu;
+const validFlags = /[dgimsuvy]/gu;
 const undefined1 = void 0;
@@ -21,2 +21,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -27,6 +28,5 @@ meta: {
         docs: {
-            description: "disallow invalid regular expression strings in `RegExp` constructors",
-            category: "Possible Errors",
+            description: "Disallow invalid regular expression strings in `RegExp` constructors",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-invalid-regexp"
+            url: "https://eslint.org/docs/latest/rules/no-invalid-regexp"
         },
@@ -66,2 +66,16 @@
         /**
+         * Reports error with the provided message.
+         * @param {ASTNode} node The node holding the invalid RegExp
+         * @param {string} message The message to report.
+         * @returns {void}
+         */
+        function report(node, message) {
+            context.report({
+                node,
+                messageId: "regexMessage",
+                data: { message }
+            });
+        }
+
+        /**
          * Check if node is a string
@@ -101,8 +115,10 @@ * @param {ASTNode} node node to evaluate
          * @param {string} pattern The RegExp pattern to validate.
-         * @param {boolean} uFlag The Unicode flag.
+         * @param {Object} flags The RegExp flags to validate.
+         * @param {boolean} [flags.unicode] The Unicode flag.
+         * @param {boolean} [flags.unicodeSets] The UnicodeSets flag.
          * @returns {string|null} The syntax error.
          */
-        function validateRegExpPattern(pattern, uFlag) {
+        function validateRegExpPattern(pattern, flags) {
             try {
-                validator.validatePattern(pattern, undefined1, undefined1, uFlag);
+                validator.validatePattern(pattern, undefined1, undefined1, flags);
                 return null;
@@ -116,12 +132,24 @@ } catch (err) {
          * Check syntax error in a given flags.
-         * @param {string} flags The RegExp flags to validate.
+         * @param {string|null} flags The RegExp flags to validate.
          * @returns {string|null} The syntax error.
          */
         function validateRegExpFlags(flags) {
+            if (!flags) {
+                return null;
+            }
             try {
                 validator.validateFlags(flags);
-                return null;
             } catch {
                 return `Invalid flags supplied to RegExp constructor '${flags}'`;
             }
+
+            /*
+             * `regexpp` checks the combination of `u` and `v` flags when parsing `Pattern` according to `ecma262`,
+             * but this rule may check only the flag when the pattern is unidentifiable, so check it here.
+             * https://tc39.es/ecma262/multipage/text-processing.html#sec-parsepattern
+             */
+            if (flags.includes("u") && flags.includes("v")) {
+                return "Regex 'u' and 'v' flags cannot be used together";
+            }
+            return null;
         }
@@ -131,6 +159,6 @@
             "CallExpression, NewExpression"(node) {
-                if (node.callee.type !== "Identifier" || node.callee.name !== "RegExp" || !isString(node.arguments[0])) {
+                if (node.callee.type !== "Identifier" || node.callee.name !== "RegExp") {
                     return;
                 }
-                const pattern = node.arguments[0].value;
+
                 let flags = getFlags(node);
@@ -142,20 +170,29 @@
 
-                const message =
-                    (
-                        flags && validateRegExpFlags(flags)
-                    ) ||
-                    (
+                let message = validateRegExpFlags(flags);
 
-                        // If flags are unknown, report the regex only if its pattern is invalid both with and without the "u" flag
-                        flags === null
-                            ? validateRegExpPattern(pattern, true) && validateRegExpPattern(pattern, false)
-                            : validateRegExpPattern(pattern, flags.includes("u"))
-                    );
+                if (message) {
+                    report(node, message);
+                    return;
+                }
 
+                if (!isString(node.arguments[0])) {
+                    return;
+                }
+
+                const pattern = node.arguments[0].value;
+
+                message = (
+
+                    // If flags are unknown, report the regex only if its pattern is invalid both with and without the "u" flag
+                    flags === null
+                        ? (
+                            validateRegExpPattern(pattern, { unicode: true, unicodeSets: false }) &&
+                            validateRegExpPattern(pattern, { unicode: false, unicodeSets: true }) &&
+                            validateRegExpPattern(pattern, { unicode: false, unicodeSets: false })
+                        )
+                        : validateRegExpPattern(pattern, { unicode: flags.includes("u"), unicodeSets: flags.includes("v") })
+                );
+
                 if (message) {
-                    context.report({
-                        node,
-                        messageId: "regexMessage",
-                        data: { message }
-                    });
+                    report(node, message);
                 }
@@ -162,0 +199,0 @@ }

lib/rules/no-invalid-this.js

 /**
- * @fileoverview A rule to disallow `this` keywords outside of classes or class-like objects.
+ * @fileoverview A rule to disallow `this` keywords in contexts where the value of `this` is `undefined`.
  * @author Toru Nagashima
@@ -15,5 +15,21 @@ */
 //------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines if the given code path is a code path with lexical `this` binding.
+ * That is, if `this` within the code path refers to `this` of surrounding code path.
+ * @param {CodePath} codePath Code path.
+ * @param {ASTNode} node Node that started the code path.
+ * @returns {boolean} `true` if it is a code path with lexical `this` binding.
+ */
+function isCodePathWithLexicalThis(codePath, node) {
+    return codePath.origin === "function" && node.type === "ArrowFunctionExpression";
+}
+
+//------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +40,5 @@ meta: {
         docs: {
-            description: "disallow `this` keywords outside of classes or class-like objects",
-            category: "Best Practices",
+            description: "Disallow use of `this` in contexts where the value of `this` is `undefined`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-invalid-this"
+            url: "https://eslint.org/docs/latest/rules/no-invalid-this"
         },
@@ -53,3 +68,3 @@
         const stack = [],
-            sourceCode = context.getSourceCode();
+            sourceCode = context.sourceCode;
 
@@ -78,59 +93,49 @@ /**
 
-        /**
-         * Pushs new checking context into the stack.
-         *
-         * The checking context is not initialized yet.
-         * Because most functions don't have `this` keyword.
-         * When `this` keyword was found, the checking context is initialized.
-         * @param {ASTNode} node A function node that was entered.
-         * @returns {void}
-         */
-        function enterFunction(node) {
+        return {
 
-            // `this` can be invalid only under strict mode.
-            stack.push({
-                init: !context.getScope().isStrict,
-                node,
-                valid: true
-            });
-        }
+            onCodePathStart(codePath, node) {
+                if (isCodePathWithLexicalThis(codePath, node)) {
+                    return;
+                }
 
-        /**
-         * Pops the current checking context from the stack.
-         * @returns {void}
-         */
-        function exitFunction() {
-            stack.pop();
-        }
+                if (codePath.origin === "program") {
+                    const scope = sourceCode.getScope(node);
+                    const features = context.parserOptions.ecmaFeatures || {};
 
-        return {
+                    // `this` at the top level of scripts always refers to the global object
+                    stack.push({
+                        init: true,
+                        node,
+                        valid: !(
+                            node.sourceType === "module" ||
+                            (features.globalReturn && scope.childScopes[0].isStrict)
+                        )
+                    });
 
-            /*
-             * `this` is invalid only under strict mode.
-             * Modules is always strict mode.
-             */
-            Program(node) {
-                const scope = context.getScope(),
-                    features = context.parserOptions.ecmaFeatures || {};
+                    return;
+                }
 
+                /*
+                 * `init: false` means that `valid` isn't determined yet.
+                 * Most functions don't use `this`, and the calculation for `valid`
+                 * is relatively costly, so we'll calculate it lazily when the first
+                 * `this` within the function is traversed. A special case are non-strict
+                 * functions, because `this` refers to the global object and therefore is
+                 * always valid, so we can set `init: true` right away.
+                 */
                 stack.push({
-                    init: true,
+                    init: !sourceCode.getScope(node).isStrict,
                     node,
-                    valid: !(
-                        scope.isStrict ||
-                        node.sourceType === "module" ||
-                        (features.globalReturn && scope.childScopes[0].isStrict)
-                    )
+                    valid: true
                 });
             },
 
-            "Program:exit"() {
+            onCodePathEnd(codePath, node) {
+                if (isCodePathWithLexicalThis(codePath, node)) {
+                    return;
+                }
+
                 stack.pop();
             },
 
-            FunctionDeclaration: enterFunction,
-            "FunctionDeclaration:exit": exitFunction,
-            FunctionExpression: enterFunction,
-            "FunctionExpression:exit": exitFunction,
-
             // Reports if `this` of the current context is invalid.
@@ -137,0 +142,0 @@ ThisExpression(node) {

lib/rules/no-irregular-whitespace.js

@@ -28,2 +28,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -34,6 +35,5 @@ meta: {
         docs: {
-            description: "disallow irregular whitespace",
-            category: "Possible Errors",
+            description: "Disallow irregular whitespace",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-irregular-whitespace"
+            url: "https://eslint.org/docs/latest/rules/no-irregular-whitespace"
         },
@@ -60,2 +60,6 @@
                         default: false
+                    },
+                    skipJSXText: {
+                        type: "boolean",
+                        default: false
                     }
@@ -83,4 +87,5 @@ },
         const skipTemplates = !!options.skipTemplates;
+        const skipJSXText = !!options.skipJSXText;
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const commentNodes = sourceCode.getAllComments();
@@ -107,3 +112,3 @@
         /**
-         * Checks identifier or literal nodes for errors that we are choosing to ignore and calls the relevant methods to remove the errors
+         * Checks literal nodes for errors that we are choosing to ignore and calls the relevant methods to remove the errors
          * @param {ASTNode} node to check for matching errors.
@@ -113,3 +118,3 @@ * @returns {void}
          */
-        function removeInvalidNodeErrorsInIdentifierOrLiteral(node) {
+        function removeInvalidNodeErrorsInLiteral(node) {
             const shouldCheckStrings = skipStrings && (typeof node.value === "string");
@@ -154,2 +159,14 @@ const shouldCheckRegExps = skipRegExps && Boolean(node.regex);
         /**
+         * Checks JSX nodes for errors that we are choosing to ignore and calls the relevant methods to remove the errors
+         * @param {ASTNode} node to check for matching errors.
+         * @returns {void}
+         * @private
+         */
+        function removeInvalidNodeErrorsInJSXText(node) {
+            if (ALL_IRREGULARS.test(node.raw)) {
+                removeWhitespaceError(node);
+            }
+        }
+
+        /**
          * Checks the program source for irregular whitespace
@@ -247,5 +264,5 @@ * @param {ASTNode} node The program node
 
-            nodes.Identifier = removeInvalidNodeErrorsInIdentifierOrLiteral;
-            nodes.Literal = removeInvalidNodeErrorsInIdentifierOrLiteral;
+            nodes.Literal = removeInvalidNodeErrorsInLiteral;
             nodes.TemplateElement = skipTemplates ? removeInvalidNodeErrorsInTemplateLiteral : noop;
+            nodes.JSXText = skipJSXText ? removeInvalidNodeErrorsInJSXText : noop;
             nodes["Program:exit"] = function() {
@@ -252,0 +269,0 @@ if (skipComments) {

lib/rules/no-iterator.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "disallow the use of the `__iterator__` property",
-            category: "Best Practices",
+            description: "Disallow the use of the `__iterator__` property",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-iterator"
+            url: "https://eslint.org/docs/latest/rules/no-iterator"
         },
@@ -30,0 +30,0 @@

lib/rules/no-label-var.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "disallow labels that share a name with a variable",
-            category: "Variables",
+            description: "Disallow labels that share a name with a variable",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-label-var"
+            url: "https://eslint.org/docs/latest/rules/no-label-var"
         },
@@ -39,2 +39,3 @@
     create(context) {
+        const sourceCode = context.sourceCode;
 
@@ -65,3 +66,3 @@ //--------------------------------------------------------------------------
                 // Fetch the innermost scope.
-                const scope = context.getScope();
+                const scope = sourceCode.getScope(node);
 
@@ -68,0 +69,0 @@ /*

lib/rules/no-labels.js

@@ -17,2 +17,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +24,5 @@ meta: {
         docs: {
-            description: "disallow labeled statements",
-            category: "Best Practices",
+            description: "Disallow labeled statements",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-labels"
+            url: "https://eslint.org/docs/latest/rules/no-labels"
         },
@@ -103,3 +103,3 @@
 
-            /* istanbul ignore next: syntax error */
+            /* c8 ignore next */
             return "other";
@@ -106,0 +106,0 @@ }

lib/rules/no-lone-blocks.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow unnecessary nested blocks",
-            category: "Best Practices",
+            description: "Disallow unnecessary nested blocks",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-lone-blocks"
+            url: "https://eslint.org/docs/latest/rules/no-lone-blocks"
         },
@@ -38,2 +38,3 @@
         let ruleDef;
+        const sourceCode = context.sourceCode;
 
@@ -46,3 +47,5 @@ /**
         function report(node) {
-            const messageId = node.parent.type === "BlockStatement" ? "redundantNestedBlock" : "redundantBlock";
+            const messageId = node.parent.type === "BlockStatement" || node.parent.type === "StaticBlock"
+                ? "redundantNestedBlock"
+                : "redundantBlock";
 
@@ -62,2 +65,3 @@ context.report({
             return node.parent.type === "BlockStatement" ||
+                node.parent.type === "StaticBlock" ||
                 node.parent.type === "Program" ||
@@ -72,5 +76,6 @@
          * and "marks it" as valid if any.
+         * @param {ASTNode} node The current node to check.
          * @returns {void}
          */
-        function markLoneBlock() {
+        function markLoneBlock(node) {
             if (loneBlocks.length === 0) {
@@ -80,3 +85,3 @@ return;
 
-            const block = context.getAncestors().pop();
+            const block = node.parent;
 
@@ -98,3 +103,3 @@ if (loneBlocks[loneBlocks.length - 1] === block) {
         // ES6: report blocks without block-level bindings, or that's only child of another block
-        if (context.parserOptions.ecmaVersion >= 6) {
+        if (context.languageOptions.ecmaVersion >= 2015) {
             ruleDef = {
@@ -111,3 +116,6 @@ BlockStatement(node) {
                     } else if (
-                        node.parent.type === "BlockStatement" &&
+                        (
+                            node.parent.type === "BlockStatement" ||
+                            node.parent.type === "StaticBlock"
+                        ) &&
                         node.parent.body.length === 1
@@ -122,9 +130,9 @@ ) {
                 if (node.kind === "let" || node.kind === "const") {
-                    markLoneBlock();
+                    markLoneBlock(node);
                 }
             };
 
-            ruleDef.FunctionDeclaration = function() {
-                if (context.getScope().isStrict) {
-                    markLoneBlock();
+            ruleDef.FunctionDeclaration = function(node) {
+                if (sourceCode.getScope(node).isStrict) {
+                    markLoneBlock(node);
                 }
@@ -131,0 +139,0 @@ };

lib/rules/no-lonely-if.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "disallow `if` statements as the only statement in `else` blocks",
-            category: "Stylistic Issues",
+            description: "Disallow `if` statements as the only statement in `else` blocks",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-lonely-if"
+            url: "https://eslint.org/docs/latest/rules/no-lonely-if"
         },
@@ -33,9 +33,8 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
         return {
             IfStatement(node) {
-                const ancestors = context.getAncestors(),
-                    parent = ancestors.pop(),
-                    grandparent = ancestors.pop();
+                const parent = node.parent,
+                    grandparent = parent.parent;
 
@@ -42,0 +41,0 @@ if (parent && parent.type === "BlockStatement" &&

lib/rules/no-loop-func.js

@@ -128,3 +128,3 @@ /**
      *
-     * It's safeafe if the reference matches one of the following condition.
+     * It's safe if the reference matches one of the following condition.
      * - is readonly.
@@ -152,2 +152,3 @@ * - doesn't exist inside a local function and after the border.
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -158,6 +159,5 @@ meta: {
         docs: {
-            description: "disallow function declarations that contain unsafe references inside loop statements",
-            category: "Best Practices",
+            description: "Disallow function declarations that contain unsafe references inside loop statements",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-loop-func"
+            url: "https://eslint.org/docs/latest/rules/no-loop-func"
         },
@@ -174,2 +174,4 @@
 
+        const sourceCode = context.sourceCode;
+
         /**
@@ -181,3 +183,3 @@ * Reports functions which match the following condition:
          * @param {ASTNode} node The AST node to check.
-         * @returns {boolean} Whether or not the node is within a loop.
+         * @returns {void}
          */
@@ -191,4 +193,4 @@ function checkForLoops(node) {
 
-            const references = context.getScope().through;
-            const unsafeRefs = references.filter(r => !isSafe(loopNode, r)).map(r => r.identifier.name);
+            const references = sourceCode.getScope(node).through;
+            const unsafeRefs = references.filter(r => r.resolved && !isSafe(loopNode, r)).map(r => r.identifier.name);
 
@@ -195,0 +197,0 @@ if (unsafeRefs.length > 0) {

lib/rules/no-loss-of-precision.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow literal numbers that lose precision",
-            category: "Possible Errors",
-            recommended: false,
-            url: "https://eslint.org/docs/rules/no-loss-of-precision"
+            description: "Disallow literal numbers that lose precision",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-loss-of-precision"
         },
@@ -88,3 +88,3 @@ schema: [],
         function addDecimalPointToNumber(stringNumber) {
-            return `${stringNumber.slice(0, 1)}.${stringNumber.slice(1)}`;
+            return `${stringNumber[0]}.${stringNumber.slice(1)}`;
         }
@@ -98,3 +98,8 @@
         function removeLeadingZeros(numberAsString) {
-            return numberAsString.replace(/^0*/u, "");
+            for (let i = 0; i < numberAsString.length; i++) {
+                if (numberAsString[i] !== "0") {
+                    return numberAsString.slice(i);
+                }
+            }
+            return numberAsString;
         }
@@ -108,9 +113,14 @@
         function removeTrailingZeros(numberAsString) {
-            return numberAsString.replace(/0*$/u, "");
+            for (let i = numberAsString.length - 1; i >= 0; i--) {
+                if (numberAsString[i] !== "0") {
+                    return numberAsString.slice(0, i + 1);
+                }
+            }
+            return numberAsString;
         }
 
         /**
-         * Converts an integer to to an object containing the the integer's coefficient and order of magnitude
+         * Converts an integer to an object containing the integer's coefficient and order of magnitude
          * @param {string} stringInteger the string representation of the integer being converted
-         * @returns {Object} the object containing the the integer's coefficient and order of magnitude
+         * @returns {Object} the object containing the integer's coefficient and order of magnitude
          */
@@ -128,5 +138,5 @@ function normalizeInteger(stringInteger) {
          *
-         * Converts a float to to an object containing the the floats's coefficient and order of magnitude
+         * Converts a float to an object containing the floats's coefficient and order of magnitude
          * @param {string} stringFloat the string representation of the float being converted
-         * @returns {Object} the object containing the the integer's coefficient and order of magnitude
+         * @returns {Object} the object containing the integer's coefficient and order of magnitude
          */
@@ -137,3 +147,3 @@ function normalizeFloat(stringFloat) {
             if (trimmedFloat.startsWith(".")) {
-                const decimalDigits = trimmedFloat.split(".").pop();
+                const decimalDigits = trimmedFloat.slice(1);
                 const significantDigits = removeLeadingZeros(decimalDigits);
@@ -154,3 +164,2 @@
 
-
         /**
@@ -171,3 +180,2 @@ * Converts a base ten number to proper scientific notation
             return `${normalizedCoefficient}e${magnitude}`;
-
         }
@@ -174,0 +182,0 @@

lib/rules/no-magic-numbers.js

@@ -29,2 +29,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -35,6 +36,5 @@ meta: {
         docs: {
-            description: "disallow magic numbers",
-            category: "Best Practices",
+            description: "Disallow magic numbers",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-magic-numbers"
+            url: "https://eslint.org/docs/latest/rules/no-magic-numbers"
         },
@@ -70,2 +70,6 @@
                     default: false
+                },
+                ignoreClassFieldInitialValues: {
+                    type: "boolean",
+                    default: false
                 }
@@ -86,5 +90,6 @@ },
             enforceConst = !!config.enforceConst,
-            ignore = (config.ignore || []).map(normalizeIgnoreValue),
+            ignore = new Set((config.ignore || []).map(normalizeIgnoreValue)),
             ignoreArrayIndexes = !!config.ignoreArrayIndexes,
-            ignoreDefaultValues = !!config.ignoreDefaultValues;
+            ignoreDefaultValues = !!config.ignoreDefaultValues,
+            ignoreClassFieldInitialValues = !!config.ignoreClassFieldInitialValues;
 
@@ -99,3 +104,3 @@ const okTypes = detectObjects ? [] : ["ObjectExpression", "Property", "AssignmentExpression"];
         function isIgnoredValue(value) {
-            return ignore.indexOf(value) !== -1;
+            return ignore.has(value);
         }
@@ -115,2 +120,13 @@
         /**
+         * Returns whether the number is the initial value of a class field.
+         * @param {ASTNode} fullNumberNode `Literal` or `UnaryExpression` full number node
+         * @returns {boolean} true if the number is the initial value of a class field.
+         */
+        function isClassFieldInitialValue(fullNumberNode) {
+            const parent = fullNumberNode.parent;
+
+            return parent.type === "PropertyDefinition" && parent.value === fullNumberNode;
+        }
+
+        /**
          * Returns whether the given node is used as a radix within parseInt() or Number.parseInt()
@@ -203,2 +219,3 @@ * @param {ASTNode} fullNumberNode `Literal` or `UnaryExpression` full number node
                     (ignoreDefaultValues && isDefaultValue(fullNumberNode)) ||
+                    (ignoreClassFieldInitialValues && isClassFieldInitialValue(fullNumberNode)) ||
                     isParseIntRadix(fullNumberNode) ||
@@ -219,3 +236,3 @@ isJSXNumber(fullNumberNode) ||
                 } else if (
-                    okTypes.indexOf(parent.type) === -1 ||
+                    !okTypes.includes(parent.type) ||
                     (parent.type === "AssignmentExpression" && parent.left.type === "Identifier")
@@ -222,0 +239,0 @@ ) {

lib/rules/no-misleading-character-class.js

@@ -6,5 +6,7 @@ /**
 
-const { CALL, CONSTRUCT, ReferenceTracker, getStringIfConstant } = require("eslint-utils");
-const { RegExpParser, visitRegExpAST } = require("regexpp");
+const { CALL, CONSTRUCT, ReferenceTracker, getStringIfConstant } = require("@eslint-community/eslint-utils");
+const { RegExpParser, visitRegExpAST } = require("@eslint-community/regexpp");
 const { isCombiningCharacter, isEmojiModifier, isRegionalIndicatorSymbol, isSurrogatePair } = require("./utils/unicode");
+const astUtils = require("./utils/ast-utils.js");
+const { isValidWithUnicodeFlag } = require("./utils/regular-expressions");
 
@@ -16,2 +18,7 @@ //------------------------------------------------------------------------------
 /**
+ * @typedef {import('@eslint-community/regexpp').AST.Character} Character
+ * @typedef {import('@eslint-community/regexpp').AST.CharacterClassElement} CharacterClassElement
+ */
+
+/**
  * Iterate character sequences of a given nodes.
@@ -21,6 +28,8 @@ *
  * so this function reverts CharacterClassRange syntax and restore the sequence.
- * @param {regexpp.AST.CharacterClassElement[]} nodes The node list to iterate character sequences.
- * @returns {IterableIterator<number[]>} The list of character sequences.
+ * @param {CharacterClassElement[]} nodes The node list to iterate character sequences.
+ * @returns {IterableIterator<Character[]>} The list of character sequences.
  */
 function *iterateCharacterSequence(nodes) {
+
+    /** @type {Character[]} */
     let seq = [];
@@ -31,12 +40,15 @@
             case "Character":
-                seq.push(node.value);
+                seq.push(node);
                 break;
 
             case "CharacterClassRange":
-                seq.push(node.min.value);
+                seq.push(node.min);
                 yield seq;
-                seq = [node.max.value];
+                seq = [node.max];
                 break;
 
             case "CharacterSet":
+            case "CharacterClass": // [[]] nesting character class
+            case "ClassStringDisjunction": // \q{...}
+            case "ExpressionCharacterClass": // [A--B]
                 if (seq.length > 0) {
@@ -57,12 +69,54 @@ yield seq;
 
+
+/**
+ * Checks whether the given character node is a Unicode code point escape or not.
+ * @param {Character} char the character node to check.
+ * @returns {boolean} `true` if the character node is a Unicode code point escape.
+ */
+function isUnicodeCodePointEscape(char) {
+    return /^\\u\{[\da-f]+\}$/iu.test(char.raw);
+}
+
+/**
+ * Each function returns `true` if it detects that kind of problem.
+ * @type {Record<string, (chars: Character[]) => boolean>}
+ */
 const hasCharacterSequence = {
     surrogatePairWithoutUFlag(chars) {
-        return chars.some((c, i) => i !== 0 && isSurrogatePair(chars[i - 1], c));
+        return chars.some((c, i) => {
+            if (i === 0) {
+                return false;
+            }
+            const c1 = chars[i - 1];
+
+            return (
+                isSurrogatePair(c1.value, c.value) &&
+                !isUnicodeCodePointEscape(c1) &&
+                !isUnicodeCodePointEscape(c)
+            );
+        });
     },
 
+    surrogatePair(chars) {
+        return chars.some((c, i) => {
+            if (i === 0) {
+                return false;
+            }
+            const c1 = chars[i - 1];
+
+            return (
+                isSurrogatePair(c1.value, c.value) &&
+                (
+                    isUnicodeCodePointEscape(c1) ||
+                    isUnicodeCodePointEscape(c)
+                )
+            );
+        });
+    },
+
     combiningClass(chars) {
         return chars.some((c, i) => (
             i !== 0 &&
-            isCombiningCharacter(c) &&
-            !isCombiningCharacter(chars[i - 1])
+            isCombiningCharacter(c.value) &&
+            !isCombiningCharacter(chars[i - 1].value)
         ));
@@ -74,4 +128,4 @@ },
             i !== 0 &&
-            isEmojiModifier(c) &&
-            !isEmojiModifier(chars[i - 1])
+            isEmojiModifier(c.value) &&
+            !isEmojiModifier(chars[i - 1].value)
         ));
@@ -83,4 +137,4 @@ },
             i !== 0 &&
-            isRegionalIndicatorSymbol(c) &&
-            isRegionalIndicatorSymbol(chars[i - 1])
+            isRegionalIndicatorSymbol(c.value) &&
+            isRegionalIndicatorSymbol(chars[i - 1].value)
         ));
@@ -95,5 +149,5 @@ },
             i !== lastIndex &&
-            c === 0x200d &&
-            chars[i - 1] !== 0x200d &&
-            chars[i + 1] !== 0x200d
+            c.value === 0x200d &&
+            chars[i - 1].value !== 0x200d &&
+            chars[i + 1].value !== 0x200d
         ));
@@ -109,2 +163,3 @@ }
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -115,8 +170,9 @@ meta: {
         docs: {
-            description: "disallow characters which are made with multiple code points in character class syntax",
-            category: "Possible Errors",
+            description: "Disallow characters which are made with multiple code points in character class syntax",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-misleading-character-class"
+            url: "https://eslint.org/docs/latest/rules/no-misleading-character-class"
         },
 
+        hasSuggestions: true,
+
         schema: [],
@@ -126,9 +182,12 @@
             surrogatePairWithoutUFlag: "Unexpected surrogate pair in character class. Use 'u' flag.",
+            surrogatePair: "Unexpected surrogate pair in character class.",
             combiningClass: "Unexpected combined character in character class.",
             emojiModifier: "Unexpected modified Emoji in character class.",
             regionalIndicatorSymbol: "Unexpected national flag in character class.",
-            zwj: "Unexpected joined character sequence in character class."
+            zwj: "Unexpected joined character sequence in character class.",
+            suggestUnicodeFlag: "Add unicode 'u' flag to regex."
         }
     },
     create(context) {
+        const sourceCode = context.sourceCode;
         const parser = new RegExpParser();
@@ -141,13 +200,6 @@
          * @param {string} flags The flags of the regular expression.
+         * @param {Function} unicodeFixer Fixer for missing "u" flag.
          * @returns {void}
          */
-        function verify(node, pattern, flags) {
-            const has = {
-                surrogatePairWithoutUFlag: false,
-                combiningClass: false,
-                variationSelector: false,
-                emojiModifier: false,
-                regionalIndicatorSymbol: false,
-                zwj: false
-            };
+        function verify(node, pattern, flags, unicodeFixer) {
             let patternNode;
@@ -160,3 +212,6 @@
                     pattern.length,
-                    flags.includes("u")
+                    {
+                        unicode: flags.includes("u"),
+                        unicodeSets: flags.includes("v")
+                    }
                 );
@@ -169,2 +224,4 @@ } catch {
 
+            const foundKinds = new Set();
+
             visitRegExpAST(patternNode, {
@@ -174,3 +231,5 @@ onCharacterClassEnter(ccNode) {
                         for (const kind of kinds) {
-                            has[kind] = has[kind] || hasCharacterSequence[kind](chars);
+                            if (hasCharacterSequence[kind](chars)) {
+                                foundKinds.add(kind);
+                            }
                         }
@@ -181,6 +240,17 @@ }
 
-            for (const kind of kinds) {
-                if (has[kind]) {
-                    context.report({ node, messageId: kind });
+            for (const kind of foundKinds) {
+                let suggest;
+
+                if (kind === "surrogatePairWithoutUFlag") {
+                    suggest = [{
+                        messageId: "suggestUnicodeFlag",
+                        fix: unicodeFixer
+                    }];
                 }
+
+                context.report({
+                    node,
+                    messageId: kind,
+                    suggest
+                });
             }
@@ -191,6 +261,12 @@ }
             "Literal[regex]"(node) {
-                verify(node, node.regex.pattern, node.regex.flags);
+                verify(node, node.regex.pattern, node.regex.flags, fixer => {
+                    if (!isValidWithUnicodeFlag(context.languageOptions.ecmaVersion, node.regex.pattern)) {
+                        return null;
+                    }
+
+                    return fixer.insertTextAfter(node, "u");
+                });
             },
-            "Program"() {
-                const scope = context.getScope();
+            "Program"(node) {
+                const scope = sourceCode.getScope(node);
                 const tracker = new ReferenceTracker(scope);
@@ -203,6 +279,6 @@
                  */
-                for (const { node } of tracker.iterateGlobalReferences({
+                for (const { node: refNode } of tracker.iterateGlobalReferences({
                     RegExp: { [CALL]: true, [CONSTRUCT]: true }
                 })) {
-                    const [patternNode, flagsNode] = node.arguments;
+                    const [patternNode, flagsNode] = refNode.arguments;
                     const pattern = getStringIfConstant(patternNode, scope);
@@ -212,3 +288,27 @@ const flags = getStringIfConstant(flagsNode, scope);
                     if (typeof pattern === "string") {
-                        verify(node, pattern, flags || "");
+                        verify(refNode, pattern, flags || "", fixer => {
+
+                            if (!isValidWithUnicodeFlag(context.languageOptions.ecmaVersion, pattern)) {
+                                return null;
+                            }
+
+                            if (refNode.arguments.length === 1) {
+                                const penultimateToken = sourceCode.getLastToken(refNode, { skip: 1 }); // skip closing parenthesis
+
+                                return fixer.insertTextAfter(
+                                    penultimateToken,
+                                    astUtils.isCommaToken(penultimateToken)
+                                        ? ' "u",'
+                                        : ', "u"'
+                                );
+                            }
+
+                            if ((flagsNode.type === "Literal" && typeof flagsNode.value === "string") || flagsNode.type === "TemplateLiteral") {
+                                const range = [flagsNode.range[0], flagsNode.range[1] - 1];
+
+                                return fixer.insertTextAfterRange(range, "u");
+                            }
+
+                            return null;
+                        });
                     }
@@ -215,0 +315,0 @@ }

lib/rules/no-mixed-operators.js

@@ -61,3 +61,3 @@ /**
  * Checks whether any group which includes both given operator exists or not.
- * @param {Array.<string[]>} groups A list of groups to check.
+ * @param {Array<string[]>} groups A list of groups to check.
  * @param {string} left An operator.
@@ -68,3 +68,3 @@ * @param {string} right Another operator.
 function includesBothInAGroup(groups, left, right) {
-    return groups.some(group => group.indexOf(left) !== -1 && group.indexOf(right) !== -1);
+    return groups.some(group => group.includes(left) && group.includes(right));
 }
@@ -87,2 +87,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -93,6 +94,5 @@ meta: {
         docs: {
-            description: "disallow mixed binary operators",
-            category: "Stylistic Issues",
+            description: "Disallow mixed binary operators",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-mixed-operators"
+            url: "https://eslint.org/docs/latest/rules/no-mixed-operators"
         },
@@ -124,3 +124,3 @@
         messages: {
-            unexpectedMixedOperator: "Unexpected mix of '{{leftOperator}}' and '{{rightOperator}}'."
+            unexpectedMixedOperator: "Unexpected mix of '{{leftOperator}}' and '{{rightOperator}}'. Use parentheses to clarify the intended order of operations."
         }
@@ -130,3 +130,3 @@ },
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const options = normalizeOptions(context.options[0]);
@@ -171,13 +171,2 @@
         /**
-         * Checks whether the operator of a given node is mixed with a
-         * conditional expression.
-         * @param {ASTNode} node A node to check. This is a conditional
-         *      expression node
-         * @returns {boolean} `true` if the node was mixed.
-         */
-        function isMixedWithConditionalParent(node) {
-            return !astUtils.isParenthesised(sourceCode, node) && !astUtils.isParenthesised(sourceCode, node.test);
-        }
-
-        /**
          * Gets the operator token of a given node.
@@ -230,15 +219,9 @@ * @param {ASTNode} node A node to check. This is a BinaryExpression
         function check(node) {
-            if (TARGET_NODE_TYPE.test(node.parent.type)) {
-                if (node.parent.type === "ConditionalExpression" && !shouldIgnore(node) && isMixedWithConditionalParent(node.parent)) {
-                    reportBothOperators(node);
-                } else {
-                    if (TARGET_NODE_TYPE.test(node.parent.type) &&
-                        isMixedWithParent(node) &&
-                        !shouldIgnore(node)
-                    ) {
-                        reportBothOperators(node);
-                    }
-                }
+            if (
+                TARGET_NODE_TYPE.test(node.parent.type) &&
+                isMixedWithParent(node) &&
+                !shouldIgnore(node)
+            ) {
+                reportBothOperators(node);
             }
-
         }
@@ -245,0 +228,0 @@

lib/rules/no-mixed-requires.js

 /**
  * @fileoverview Rule to enforce grouped require statements for Node.JS
  * @author Raphael Pigulla
+ * @deprecated in ESLint v7.0.0
  */
@@ -12,2 +13,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -22,6 +24,5 @@ meta: {
         docs: {
-            description: "disallow `require` calls to be mixed with regular variable declarations",
-            category: "Node.js and CommonJS",
+            description: "Disallow `require` calls to be mixed with regular variable declarations",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-mixed-requires"
+            url: "https://eslint.org/docs/latest/rules/no-mixed-requires"
         },
@@ -164,3 +165,3 @@
 
-            if (BUILTIN_MODULES.indexOf(arg.value) !== -1) {
+            if (BUILTIN_MODULES.includes(arg.value)) {
 
@@ -167,0 +168,0 @@ // "var fs = require('fs');"

lib/rules/no-mixed-spaces-and-tabs.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "disallow mixed spaces and tabs for indentation",
-            category: "Stylistic Issues",
+            description: "Disallow mixed spaces and tabs for indentation",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-mixed-spaces-and-tabs"
+            url: "https://eslint.org/docs/latest/rules/no-mixed-spaces-and-tabs"
         },
@@ -36,3 +36,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -39,0 +39,0 @@ let smartTabs;

lib/rules/no-multi-assign.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,9 +20,17 @@ meta: {
         docs: {
-            description: "disallow use of chained assignment expressions",
-            category: "Stylistic Issues",
+            description: "Disallow use of chained assignment expressions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-multi-assign"
+            url: "https://eslint.org/docs/latest/rules/no-multi-assign"
         },
 
-        schema: [],
+        schema: [{
+            type: "object",
+            properties: {
+                ignoreNonDeclaration: {
+                    type: "boolean",
+                    default: false
+                }
+            },
+            additionalProperties: false
+        }],
 
@@ -38,11 +47,20 @@ messages: {
         //--------------------------------------------------------------------------
+        const options = context.options[0] || {
+            ignoreNonDeclaration: false
+        };
+        const selectors = [
+            "VariableDeclarator > AssignmentExpression.init",
+            "PropertyDefinition > AssignmentExpression.value"
+        ];
 
+        if (!options.ignoreNonDeclaration) {
+            selectors.push("AssignmentExpression > AssignmentExpression.right");
+        }
+
         return {
-            AssignmentExpression(node) {
-                if (["AssignmentExpression", "VariableDeclarator"].indexOf(node.parent.type) !== -1) {
-                    context.report({
-                        node,
-                        messageId: "unexpectedChain"
-                    });
-                }
+            [selectors](node) {
+                context.report({
+                    node,
+                    messageId: "unexpectedChain"
+                });
             }
@@ -49,0 +67,0 @@ };

lib/rules/no-multi-spaces.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "disallow multiple spaces",
-            category: "Best Practices",
+            description: "Disallow multiple spaces",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-multi-spaces"
+            url: "https://eslint.org/docs/latest/rules/no-multi-spaces"
         },
@@ -57,7 +57,7 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const options = context.options[0] || {};
         const ignoreEOLComments = options.ignoreEOLComments;
         const exceptions = Object.assign({ Property: true }, options.exceptions);
-        const hasExceptions = Object.keys(exceptions).filter(key => exceptions[key]).length > 0;
+        const hasExceptions = Object.keys(exceptions).some(key => exceptions[key]);
 
@@ -64,0 +64,0 @@ /**

lib/rules/no-multi-str.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "disallow multiline strings",
-            category: "Best Practices",
+            description: "Disallow multiline strings",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-multi-str"
+            url: "https://eslint.org/docs/latest/rules/no-multi-str"
         },
@@ -30,0 +30,0 @@

lib/rules/no-multiple-empty-lines.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow multiple empty lines",
-            category: "Stylistic Issues",
+            description: "Disallow multiple empty lines",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-multiple-empty-lines"
+            url: "https://eslint.org/docs/latest/rules/no-multiple-empty-lines"
         },
@@ -69,3 +69,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -72,0 +72,0 @@ // Swallow the final newline, as some editors add it automatically and we don't want it to cause an issue

lib/rules/no-native-reassign.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "disallow assignments to native objects or read-only global variables",
-            category: "Best Practices",
+            description: "Disallow assignments to native objects or read-only global variables",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-native-reassign"
+            url: "https://eslint.org/docs/latest/rules/no-native-reassign"
         },
@@ -52,2 +52,3 @@
         const exceptions = (config && config.exceptions) || [];
+        const sourceCode = context.sourceCode;
 
@@ -87,3 +88,3 @@ /**
         function checkVariable(variable) {
-            if (variable.writeable === false && exceptions.indexOf(variable.name) === -1) {
+            if (variable.writeable === false && !exceptions.includes(variable.name)) {
                 variable.references.forEach(checkReference);
@@ -94,4 +95,4 @@ }
         return {
-            Program() {
-                const globalScope = context.getScope();
+            Program(node) {
+                const globalScope = sourceCode.getScope(node);
 
@@ -98,0 +99,0 @@ globalScope.variables.forEach(checkVariable);

lib/rules/no-negated-condition.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "disallow negated conditions",
-            category: "Stylistic Issues",
+            description: "Disallow negated conditions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-negated-condition"
+            url: "https://eslint.org/docs/latest/rules/no-negated-condition"
         },
@@ -23,0 +23,0 @@

lib/rules/no-negated-in-lhs.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "disallow negating the left operand in `in` expressions",
-            category: "Possible Errors",
+            description: "Disallow negating the left operand in `in` expressions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-negated-in-lhs"
+            url: "https://eslint.org/docs/latest/rules/no-negated-in-lhs"
         },
@@ -25,0 +25,0 @@

lib/rules/no-nested-ternary.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow nested ternary expressions",
-            category: "Stylistic Issues",
+            description: "Disallow nested ternary expressions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-nested-ternary"
+            url: "https://eslint.org/docs/latest/rules/no-nested-ternary"
         },
@@ -24,0 +24,0 @@

lib/rules/no-new-func.js

@@ -9,5 +9,18 @@ /**
 //------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const callMethods = new Set(["apply", "bind", "call"]);
+
+//------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +31,5 @@ meta: {
         docs: {
-            description: "disallow `new` operators with the `Function` object",
-            category: "Best Practices",
+            description: "Disallow `new` operators with the `Function` object",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-new-func"
+            url: "https://eslint.org/docs/latest/rules/no-new-func"
         },
@@ -33,6 +45,7 @@
     create(context) {
+        const sourceCode = context.sourceCode;
 
         return {
-            "Program:exit"() {
-                const globalScope = context.getScope();
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
                 const variable = globalScope.set.get("Function");
@@ -42,12 +55,28 @@
                     variable.references.forEach(ref => {
-                        const node = ref.identifier;
-                        const { parent } = node;
+                        const idNode = ref.identifier;
+                        const { parent } = idNode;
+                        let evalNode;
 
-                        if (
-                            parent &&
-                            (parent.type === "NewExpression" || parent.type === "CallExpression") &&
-                            node === parent.callee
-                        ) {
+                        if (parent) {
+                            if (idNode === parent.callee && (
+                                parent.type === "NewExpression" ||
+                                parent.type === "CallExpression"
+                            )) {
+                                evalNode = parent;
+                            } else if (
+                                parent.type === "MemberExpression" &&
+                                idNode === parent.object &&
+                                callMethods.has(astUtils.getStaticPropertyName(parent))
+                            ) {
+                                const maybeCallee = parent.parent.type === "ChainExpression" ? parent.parent : parent;
+
+                                if (maybeCallee.parent.type === "CallExpression" && maybeCallee.parent.callee === maybeCallee) {
+                                    evalNode = maybeCallee.parent;
+                                }
+                            }
+                        }
+
+                        if (evalNode) {
                             context.report({
-                                node: parent,
+                                node: evalNode,
                                 messageId: "noFunctionConstructor"
@@ -54,0 +83,0 @@ });

lib/rules/no-new-object.js

 /**
  * @fileoverview A rule to disallow calls to the Object constructor
  * @author Matt DuVall <http://www.mattduvall.com/>
+ * @deprecated in ESLint v8.50.0
  */
@@ -18,2 +19,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,12 +26,17 @@ meta: {
         docs: {
-            description: "disallow `Object` constructors",
-            category: "Stylistic Issues",
+            description: "Disallow `Object` constructors",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-new-object"
+            url: "https://eslint.org/docs/latest/rules/no-new-object"
         },
 
+        deprecated: true,
+
+        replacedBy: [
+            "no-object-constructor"
+        ],
+
         schema: [],
 
         messages: {
-            preferLiteral: "The object literal notation {} is preferrable."
+            preferLiteral: "The object literal notation {} is preferable."
         }
@@ -39,6 +46,9 @@ },
     create(context) {
+
+        const sourceCode = context.sourceCode;
+
         return {
             NewExpression(node) {
                 const variable = astUtils.getVariableByName(
-                    context.getScope(),
+                    sourceCode.getScope(node),
                     node.callee.name
@@ -45,0 +55,0 @@ );

lib/rules/no-new-require.js

 /**
  * @fileoverview Rule to disallow use of new operator with the `require` function
  * @author Wil Moore III
+ * @deprecated in ESLint v7.0.0
  */
@@ -12,2 +13,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -22,6 +24,5 @@ meta: {
         docs: {
-            description: "disallow `new` operators with calls to `require`",
-            category: "Node.js and CommonJS",
+            description: "Disallow `new` operators with calls to `require`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-new-require"
+            url: "https://eslint.org/docs/latest/rules/no-new-require"
         },
@@ -28,0 +29,0 @@

lib/rules/no-new-symbol.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow `new` operators with the `Symbol` object",
-            category: "ECMAScript 6",
+            description: "Disallow `new` operators with the `Symbol` object",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-new-symbol"
+            url: "https://eslint.org/docs/latest/rules/no-new-symbol"
         },
@@ -34,5 +34,7 @@
 
+        const sourceCode = context.sourceCode;
+
         return {
-            "Program:exit"() {
-                const globalScope = context.getScope();
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
                 const variable = globalScope.set.get("Symbol");
@@ -42,8 +44,8 @@
                     variable.references.forEach(ref => {
-                        const node = ref.identifier;
-                        const parent = node.parent;
+                        const idNode = ref.identifier;
+                        const parent = idNode.parent;
 
-                        if (parent && parent.type === "NewExpression" && parent.callee === node) {
+                        if (parent && parent.type === "NewExpression" && parent.callee === idNode) {
                             context.report({
-                                node,
+                                node: idNode,
                                 messageId: "noNewSymbol"
@@ -50,0 +52,0 @@ });

lib/rules/no-new-wrappers.js

@@ -9,5 +9,12 @@ /**
 //------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const { getVariableByName } = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +25,5 @@ meta: {
         docs: {
-            description: "disallow `new` operators with the `String`, `Number`, and `Boolean` objects",
-            category: "Best Practices",
+            description: "Disallow `new` operators with the `String`, `Number`, and `Boolean` objects",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-new-wrappers"
+            url: "https://eslint.org/docs/latest/rules/no-new-wrappers"
         },
@@ -33,2 +39,3 @@
     create(context) {
+        const { sourceCode } = context;
 
@@ -39,9 +46,14 @@ return {
                 const wrapperObjects = ["String", "Number", "Boolean"];
+                const { name } = node.callee;
 
-                if (wrapperObjects.indexOf(node.callee.name) > -1) {
-                    context.report({
-                        node,
-                        messageId: "noConstructor",
-                        data: { fn: node.callee.name }
-                    });
+                if (wrapperObjects.includes(name)) {
+                    const variable = getVariableByName(sourceCode.getScope(node), name);
+
+                    if (variable && variable.identifiers.length === 0) {
+                        context.report({
+                            node,
+                            messageId: "noConstructor",
+                            data: { fn: name }
+                        });
+                    }
                 }
@@ -48,0 +60,0 @@ }

lib/rules/no-new.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "disallow `new` operators outside of assignments or comparisons",
-            category: "Best Practices",
+            description: "Disallow `new` operators outside of assignments or comparisons",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-new"
+            url: "https://eslint.org/docs/latest/rules/no-new"
         },
@@ -25,0 +25,0 @@

lib/rules/no-nonoctal-decimal-escape.js

@@ -27,2 +27,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -33,9 +34,9 @@ meta: {
         docs: {
-            description: "disallow `\\8` and `\\9` escape sequences in string literals",
-            category: "Best Practices",
-            recommended: false,
-            url: "https://eslint.org/docs/rules/no-nonoctal-decimal-escape",
-            suggestion: true
+            description: "Disallow `\\8` and `\\9` escape sequences in string literals",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-nonoctal-decimal-escape"
         },
 
+        hasSuggestions: true,
+
         schema: [],
@@ -53,3 +54,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -56,0 +57,0 @@ /**

lib/rules/no-obj-calls.js

@@ -12,3 +12,3 @@ /**
 
-const { CALL, CONSTRUCT, ReferenceTracker } = require("eslint-utils");
+const { CALL, CONSTRUCT, ReferenceTracker } = require("@eslint-community/eslint-utils");
 const getPropertyName = require("./utils/ast-utils").getStaticPropertyName;
@@ -20,3 +20,3 @@
 
-const nonCallableGlobals = ["Atomics", "JSON", "Math", "Reflect"];
+const nonCallableGlobals = ["Atomics", "JSON", "Math", "Reflect", "Intl"];
 
@@ -42,2 +42,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -48,6 +49,5 @@ meta: {
         docs: {
-            description: "disallow calling global object properties as functions",
-            category: "Possible Errors",
+            description: "Disallow calling global object properties as functions",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-obj-calls"
+            url: "https://eslint.org/docs/latest/rules/no-obj-calls"
         },
@@ -65,5 +65,7 @@
 
+        const sourceCode = context.sourceCode;
+
         return {
-            Program() {
-                const scope = context.getScope();
+            Program(node) {
+                const scope = sourceCode.getScope(node);
                 const tracker = new ReferenceTracker(scope);
@@ -79,8 +81,8 @@ const traceMap = {};
 
-                for (const { node, path } of tracker.iterateGlobalReferences(traceMap)) {
-                    const name = getReportNodeName(node.callee);
+                for (const { node: refNode, path } of tracker.iterateGlobalReferences(traceMap)) {
+                    const name = getReportNodeName(refNode.callee);
                     const ref = path[0];
                     const messageId = name === ref ? "unexpectedCall" : "unexpectedRefCall";
 
-                    context.report({ node, messageId, data: { name, ref } });
+                    context.report({ node: refNode, messageId, data: { name, ref } });
                 }
@@ -87,0 +89,0 @@ }

lib/rules/no-octal-escape.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow octal escape sequences in string literals",
-            category: "Best Practices",
+            description: "Disallow octal escape sequences in string literals",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-octal-escape"
+            url: "https://eslint.org/docs/latest/rules/no-octal-escape"
         },
@@ -24,0 +24,0 @@

lib/rules/no-octal.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow octal literals",
-            category: "Best Practices",
+            description: "Disallow octal literals",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-octal"
+            url: "https://eslint.org/docs/latest/rules/no-octal"
         },
@@ -28,3 +28,3 @@
         messages: {
-            noOcatal: "Octal literals should not be used."
+            noOctal: "Octal literals should not be used."
         }
@@ -41,3 +41,3 @@ },
                         node,
-                        messageId: "noOcatal"
+                        messageId: "noOctal"
                     });
@@ -44,0 +44,0 @@ }

lib/rules/no-param-reassign.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "disallow reassigning `function` parameters",
-            category: "Best Practices",
+            description: "Disallow reassigning `function` parameters",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-param-reassign"
+            url: "https://eslint.org/docs/latest/rules/no-param-reassign"
         },
@@ -75,2 +75,3 @@
         const ignoredPropertyAssignmentsForRegex = context.options[0] && context.options[0].ignorePropertyModificationsForRegex || [];
+        const sourceCode = context.sourceCode;
 
@@ -220,3 +221,3 @@ /**
         function checkForFunction(node) {
-            context.getDeclaredVariables(node).forEach(checkVariable);
+            sourceCode.getDeclaredVariables(node).forEach(checkVariable);
         }
@@ -223,0 +224,0 @@

lib/rules/no-path-concat.js

 /**
  * @fileoverview Disallow string concatenation when using __dirname and __filename
  * @author Nicholas C. Zakas
+ * @deprecated in ESLint v7.0.0
  */
@@ -11,2 +12,3 @@ "use strict";
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -21,6 +23,5 @@ meta: {
         docs: {
-            description: "disallow string concatenation with `__dirname` and `__filename`",
-            category: "Node.js and CommonJS",
+            description: "Disallow string concatenation with `__dirname` and `__filename`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-path-concat"
+            url: "https://eslint.org/docs/latest/rules/no-path-concat"
         },
@@ -27,0 +28,0 @@

lib/rules/no-plusplus.js

@@ -48,2 +48,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -54,6 +55,5 @@ meta: {
         docs: {
-            description: "disallow the unary operators `++` and `--`",
-            category: "Stylistic Issues",
+            description: "Disallow the unary operators `++` and `--`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-plusplus"
+            url: "https://eslint.org/docs/latest/rules/no-plusplus"
         },
@@ -60,0 +60,0 @@

lib/rules/no-process-env.js

 /**
  * @fileoverview Disallow the use of process.env()
  * @author Vignesh Anand
+ * @deprecated in ESLint v7.0.0
  */
@@ -11,2 +12,3 @@ "use strict";
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -21,6 +23,5 @@ meta: {
         docs: {
-            description: "disallow the use of `process.env`",
-            category: "Node.js and CommonJS",
+            description: "Disallow the use of `process.env`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-process-env"
+            url: "https://eslint.org/docs/latest/rules/no-process-env"
         },
@@ -27,0 +28,0 @@

lib/rules/no-process-exit.js

 /**
  * @fileoverview Disallow the use of process.exit()
  * @author Nicholas C. Zakas
+ * @deprecated in ESLint v7.0.0
  */
@@ -11,2 +12,3 @@ "use strict";
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -21,6 +23,5 @@ meta: {
         docs: {
-            description: "disallow the use of `process.exit()`",
-            category: "Node.js and CommonJS",
+            description: "Disallow the use of `process.exit()`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-process-exit"
+            url: "https://eslint.org/docs/latest/rules/no-process-exit"
         },
@@ -27,0 +28,0 @@

lib/rules/no-promise-executor-return.js

@@ -12,3 +12,4 @@ /**
 
-const { findVariable } = require("eslint-utils");
+const { findVariable } = require("@eslint-community/eslint-utils");
+const astUtils = require("./utils/ast-utils");
 
@@ -63,2 +64,74 @@ //------------------------------------------------------------------------------
 
+/**
+ * Checks if the given node is a void expression.
+ * @param {ASTNode} node The node to check.
+ * @returns {boolean} - `true` if the node is a void expression
+ */
+function expressionIsVoid(node) {
+    return node.type === "UnaryExpression" && node.operator === "void";
+}
+
+/**
+ * Fixes the linting error by prepending "void " to the given node
+ * @param {Object} sourceCode context given by context.sourceCode
+ * @param {ASTNode} node The node to fix.
+ * @param {Object} fixer The fixer object provided by ESLint.
+ * @returns {Array<Object>} - An array of fix objects to apply to the node.
+ */
+function voidPrependFixer(sourceCode, node, fixer) {
+
+    const requiresParens =
+
+        // prepending `void ` will fail if the node has a lower precedence than void
+        astUtils.getPrecedence(node) < astUtils.getPrecedence({ type: "UnaryExpression", operator: "void" }) &&
+
+        // check if there are parentheses around the node to avoid redundant parentheses
+        !astUtils.isParenthesised(sourceCode, node);
+
+    // avoid parentheses issues
+    const returnOrArrowToken = sourceCode.getTokenBefore(
+        node,
+        node.parent.type === "ArrowFunctionExpression"
+            ? astUtils.isArrowToken
+
+            // isReturnToken
+            : token => token.type === "Keyword" && token.value === "return"
+    );
+
+    const firstToken = sourceCode.getTokenAfter(returnOrArrowToken);
+
+    const prependSpace =
+
+        // is return token, as => allows void to be adjacent
+        returnOrArrowToken.value === "return" &&
+
+        // If two tokens (return and "(") are adjacent
+        returnOrArrowToken.range[1] === firstToken.range[0];
+
+    return [
+        fixer.insertTextBefore(firstToken, `${prependSpace ? " " : ""}void ${requiresParens ? "(" : ""}`),
+        fixer.insertTextAfter(node, requiresParens ? ")" : "")
+    ];
+}
+
+/**
+ * Fixes the linting error by `wrapping {}` around the given node's body.
+ * @param {Object} sourceCode context given by context.sourceCode
+ * @param {ASTNode} node The node to fix.
+ * @param {Object} fixer The fixer object provided by ESLint.
+ * @returns {Array<Object>} - An array of fix objects to apply to the node.
+ */
+function curlyWrapFixer(sourceCode, node, fixer) {
+
+    // https://github.com/eslint/eslint/pull/17282#issuecomment-1592795923
+    const arrowToken = sourceCode.getTokenBefore(node.body, astUtils.isArrowToken);
+    const firstToken = sourceCode.getTokenAfter(arrowToken);
+    const lastToken = sourceCode.getLastToken(node);
+
+    return [
+        fixer.insertTextBefore(firstToken, "{"),
+        fixer.insertTextAfter(lastToken, "}")
+    ];
+}
+
 //------------------------------------------------------------------------------
@@ -68,2 +141,3 @@ // Rule Definition
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -74,12 +148,28 @@ meta: {
         docs: {
-            description: "disallow returning values from Promise executor functions",
-            category: "Possible Errors",
+            description: "Disallow returning values from Promise executor functions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-promise-executor-return"
+            url: "https://eslint.org/docs/latest/rules/no-promise-executor-return"
         },
 
-        schema: [],
+        hasSuggestions: true,
 
+        schema: [{
+            type: "object",
+            properties: {
+                allowVoid: {
+                    type: "boolean",
+                    default: false
+                }
+            },
+            additionalProperties: false
+        }],
+
         messages: {
-            returnsValue: "Return values from promise executor functions cannot be read."
+            returnsValue: "Return values from promise executor functions cannot be read.",
+
+            // arrow and function suggestions
+            prependVoid: "Prepend `void` to the expression.",
+
+            // only arrow suggestions
+            wrapBraces: "Wrap the expression in `{}`."
         }
@@ -91,12 +181,7 @@ },
         let funcInfo = null;
+        const sourceCode = context.sourceCode;
+        const {
+            allowVoid = false
+        } = context.options[0] || {};
 
-        /**
-         * Reports the given node.
-         * @param {ASTNode} node Node to report.
-         * @returns {void}
-         */
-        function report(node) {
-            context.report({ node, messageId: "returnsValue" });
-        }
-
         return {
@@ -107,7 +192,39 @@
                     upper: funcInfo,
-                    shouldCheck: functionTypesToCheck.has(node.type) && isPromiseExecutor(node, context.getScope())
+                    shouldCheck:
+                        functionTypesToCheck.has(node.type) &&
+                        isPromiseExecutor(node, sourceCode.getScope(node))
                 };
 
-                if (funcInfo.shouldCheck && node.type === "ArrowFunctionExpression" && node.expression) {
-                    report(node.body);
+                if (// Is a Promise executor
+                    funcInfo.shouldCheck &&
+                    node.type === "ArrowFunctionExpression" &&
+                    node.expression &&
+
+                    // Except void
+                    !(allowVoid && expressionIsVoid(node.body))
+                ) {
+                    const suggest = [];
+
+                    // prevent useless refactors
+                    if (allowVoid) {
+                        suggest.push({
+                            messageId: "prependVoid",
+                            fix(fixer) {
+                                return voidPrependFixer(sourceCode, node.body, fixer);
+                            }
+                        });
+                    }
+
+                    suggest.push({
+                        messageId: "wrapBraces",
+                        fix(fixer) {
+                            return curlyWrapFixer(sourceCode, node, fixer);
+                        }
+                    });
+
+                    context.report({
+                        node: node.body,
+                        messageId: "returnsValue",
+                        suggest
+                    });
                 }
@@ -121,5 +238,27 @@ },
             ReturnStatement(node) {
-                if (funcInfo.shouldCheck && node.argument) {
-                    report(node);
+                if (!(funcInfo.shouldCheck && node.argument)) {
+                    return;
                 }
+
+                // node is `return <expression>`
+                if (!allowVoid) {
+                    context.report({ node, messageId: "returnsValue" });
+                    return;
+                }
+
+                if (expressionIsVoid(node.argument)) {
+                    return;
+                }
+
+                // allowVoid && !expressionIsVoid
+                context.report({
+                    node,
+                    messageId: "returnsValue",
+                    suggest: [{
+                        messageId: "prependVoid",
+                        fix(fixer) {
+                            return voidPrependFixer(sourceCode, node.argument, fixer);
+                        }
+                    }]
+                });
             }
@@ -126,0 +265,0 @@ };

lib/rules/no-proto.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "disallow the use of the `__proto__` property",
-            category: "Best Practices",
+            description: "Disallow the use of the `__proto__` property",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-proto"
+            url: "https://eslint.org/docs/latest/rules/no-proto"
         },
@@ -30,0 +30,0 @@

lib/rules/no-prototype-builtins.js

@@ -17,2 +17,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +24,5 @@ meta: {
         docs: {
-            description: "disallow calling some `Object.prototype` methods directly on objects",
-            category: "Possible Errors",
+            description: "Disallow calling some `Object.prototype` methods directly on objects",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-prototype-builtins"
+            url: "https://eslint.org/docs/latest/rules/no-prototype-builtins"
         },
@@ -38,7 +38,7 @@
     create(context) {
-        const DISALLOWED_PROPS = [
+        const DISALLOWED_PROPS = new Set([
             "hasOwnProperty",
             "isPrototypeOf",
             "propertyIsEnumerable"
-        ];
+        ]);
 
@@ -60,3 +60,3 @@ /**
 
-            if (propName !== null && DISALLOWED_PROPS.indexOf(propName) > -1) {
+            if (propName !== null && DISALLOWED_PROPS.has(propName)) {
                 context.report({
@@ -63,0 +63,0 @@ messageId: "prototypeBuildIn",

lib/rules/no-redeclare.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "disallow variable redeclaration",
-            category: "Best Practices",
+            description: "Disallow variable redeclaration",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-redeclare"
+            url: "https://eslint.org/docs/latest/rules/no-redeclare"
         },
@@ -55,3 +55,3 @@
         };
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -135,3 +135,3 @@ /**
         function checkForBlock(node) {
-            const scope = context.getScope();
+            const scope = sourceCode.getScope(node);
 
@@ -148,4 +148,4 @@ /*
         return {
-            Program() {
-                const scope = context.getScope();
+            Program(node) {
+                const scope = sourceCode.getScope(node);
 
@@ -170,2 +170,4 @@ findVariablesInScope(scope);
 
+            StaticBlock: checkForBlock,
+
             BlockStatement: checkForBlock,
@@ -172,0 +174,0 @@ ForStatement: checkForBlock,

lib/rules/no-regex-spaces.js

@@ -13,3 +13,3 @@ /**
 const astUtils = require("./utils/ast-utils");
-const regexpp = require("regexpp");
+const regexpp = require("@eslint-community/regexpp");
 
@@ -37,2 +37,3 @@ //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -43,6 +44,5 @@ meta: {
         docs: {
-            description: "disallow multiple spaces in regular expressions",
-            category: "Possible Errors",
+            description: "Disallow multiple spaces in regular expressions",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-regex-spaces"
+            url: "https://eslint.org/docs/latest/rules/no-regex-spaces"
         },
@@ -60,2 +60,4 @@
 
+        const sourceCode = context.sourceCode;
+
         /**
@@ -82,3 +84,3 @@ * Validate regular expression
             try {
-                regExpAST = regExpParser.parsePattern(pattern, 0, pattern.length, flags.includes("u"));
+                regExpAST = regExpParser.parsePattern(pattern, 0, pattern.length, { unicode: flags.includes("u"), unicodeSets: flags.includes("v") });
             } catch {
@@ -157,7 +159,6 @@
         function checkFunction(node) {
-            const scope = context.getScope();
+            const scope = sourceCode.getScope(node);
             const regExpVar = astUtils.getVariableByName(scope, "RegExp");
             const shadowed = regExpVar && regExpVar.defs.length > 0;
             const patternNode = node.arguments[0];
-            const flagsNode = node.arguments[1];
 
@@ -168,4 +169,20 @@ if (node.callee.type === "Identifier" && node.callee.name === "RegExp" && isString(patternNode) && !shadowed) {
                 const rawPatternStartRange = patternNode.range[0] + 1;
-                const flags = isString(flagsNode) ? flagsNode.value : "";
+                let flags;
 
+                if (node.arguments.length < 2) {
+
+                    // It has no flags.
+                    flags = "";
+                } else {
+                    const flagsNode = node.arguments[1];
+
+                    if (isString(flagsNode)) {
+                        flags = flagsNode.value;
+                    } else {
+
+                        // The flags cannot be determined.
+                        return;
+                    }
+                }
+
                 checkRegex(
@@ -172,0 +189,0 @@ node,

lib/rules/no-restricted-exports.js

@@ -9,5 +9,12 @@ /**
 //------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,24 +25,73 @@ meta: {
         docs: {
-            description: "disallow specified names in exports",
-            category: "ECMAScript 6",
+            description: "Disallow specified names in exports",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-restricted-exports"
+            url: "https://eslint.org/docs/latest/rules/no-restricted-exports"
         },
 
         schema: [{
-            type: "object",
-            properties: {
-                restrictedNamedExports: {
-                    type: "array",
-                    items: {
-                        type: "string"
+            anyOf: [
+                {
+                    type: "object",
+                    properties: {
+                        restrictedNamedExports: {
+                            type: "array",
+                            items: {
+                                type: "string"
+                            },
+                            uniqueItems: true
+                        }
                     },
-                    uniqueItems: true
+                    additionalProperties: false
+                },
+                {
+                    type: "object",
+                    properties: {
+                        restrictedNamedExports: {
+                            type: "array",
+                            items: {
+                                type: "string",
+                                pattern: "^(?!default$)"
+                            },
+                            uniqueItems: true
+                        },
+                        restrictDefaultExports: {
+                            type: "object",
+                            properties: {
+
+                                // Allow/Disallow `export default foo; export default 42; export default function foo() {}` format
+                                direct: {
+                                    type: "boolean"
+                                },
+
+                                // Allow/Disallow `export { foo as default };` declarations
+                                named: {
+                                    type: "boolean"
+                                },
+
+                                //  Allow/Disallow `export { default } from "mod"; export { default as default } from "mod";` declarations
+                                defaultFrom: {
+                                    type: "boolean"
+                                },
+
+                                //  Allow/Disallow `export { foo as default } from "mod";` declarations
+                                namedFrom: {
+                                    type: "boolean"
+                                },
+
+                                //  Allow/Disallow `export * as default from "mod"`; declarations
+                                namespaceFrom: {
+                                    type: "boolean"
+                                }
+                            },
+                            additionalProperties: false
+                        }
+                    },
+                    additionalProperties: false
                 }
-            },
-            additionalProperties: false
+            ]
         }],
 
         messages: {
-            restrictedNamed: "'{{name}}' is restricted from being used as an exported name."
+            restrictedNamed: "'{{name}}' is restricted from being used as an exported name.",
+            restrictedDefault: "Exporting 'default' is restricted."
         }
@@ -47,10 +103,12 @@ },
         const restrictedNames = new Set(context.options[0] && context.options[0].restrictedNamedExports);
+        const restrictDefaultExports = context.options[0] && context.options[0].restrictDefaultExports;
+        const sourceCode = context.sourceCode;
 
         /**
-         * Checks and reports given exported identifier.
-         * @param {ASTNode} node exported `Identifier` node to check.
+         * Checks and reports given exported name.
+         * @param {ASTNode} node exported `Identifier` or string `Literal` node to check.
          * @returns {void}
          */
         function checkExportedName(node) {
-            const name = node.name;
+            const name = astUtils.getModuleExportName(node);
 
@@ -63,3 +121,39 @@ if (restrictedNames.has(name)) {
                 });
+                return;
             }
+
+            if (name === "default") {
+                if (node.parent.type === "ExportAllDeclaration") {
+                    if (restrictDefaultExports && restrictDefaultExports.namespaceFrom) {
+                        context.report({
+                            node,
+                            messageId: "restrictedDefault"
+                        });
+                    }
+
+                } else { // ExportSpecifier
+                    const isSourceSpecified = !!node.parent.parent.source;
+                    const specifierLocalName = astUtils.getModuleExportName(node.parent.local);
+
+                    if (!isSourceSpecified && restrictDefaultExports && restrictDefaultExports.named) {
+                        context.report({
+                            node,
+                            messageId: "restrictedDefault"
+                        });
+                        return;
+                    }
+
+                    if (isSourceSpecified && restrictDefaultExports) {
+                        if (
+                            (specifierLocalName === "default" && restrictDefaultExports.defaultFrom) ||
+                            (specifierLocalName !== "default" && restrictDefaultExports.namedFrom)
+                        ) {
+                            context.report({
+                                node,
+                                messageId: "restrictedDefault"
+                            });
+                        }
+                    }
+                }
+            }
         }
@@ -74,2 +168,11 @@
 
+            ExportDefaultDeclaration(node) {
+                if (restrictDefaultExports && restrictDefaultExports.direct) {
+                    context.report({
+                        node,
+                        messageId: "restrictedDefault"
+                    });
+                }
+            },
+
             ExportNamedDeclaration(node) {
@@ -82,3 +185,3 @@ const declaration = node.declaration;
                     } else if (declaration.type === "VariableDeclaration") {
-                        context.getDeclaredVariables(declaration)
+                        sourceCode.getDeclaredVariables(declaration)
                             .map(v => v.defs.find(d => d.parent === declaration))
@@ -85,0 +188,0 @@ .map(d => d.name) // Identifier nodes

lib/rules/no-restricted-globals.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "disallow specified global variables",
-            category: "Variables",
+            description: "Disallow specified global variables",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-restricted-globals"
+            url: "https://eslint.org/docs/latest/rules/no-restricted-globals"
         },
@@ -48,3 +48,3 @@
             defaultMessage: "Unexpected use of '{{name}}'.",
-            // eslint-disable-next-line eslint-plugin/report-message-format
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
             customMessage: "Unexpected use of '{{name}}'. {{customMessage}}"
@@ -56,2 +56,4 @@ }
 
+        const sourceCode = context.sourceCode;
+
         // If no globals are restricted, we don't need to do anything
@@ -106,4 +108,4 @@ if (context.options.length === 0) {
         return {
-            Program() {
-                const scope = context.getScope();
+            Program(node) {
+                const scope = sourceCode.getScope(node);
 
@@ -110,0 +112,0 @@ // Report variables declared elsewhere (ex: variables defined as "global" by eslint)

lib/rules/no-restricted-imports.js

@@ -8,2 +8,8 @@ /**
 //------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
 // Rule Definition
@@ -14,8 +20,2 @@ //------------------------------------------------------------------------------
 
-const arrayOfStrings = {
-    type: "array",
-    items: { type: "string" },
-    uniqueItems: true
-};
-
 const arrayOfStringsOrObjects = {
@@ -49,2 +49,49 @@ type: "array",
 
+const arrayOfStringsOrObjectPatterns = {
+    anyOf: [
+        {
+            type: "array",
+            items: {
+                type: "string"
+            },
+            uniqueItems: true
+        },
+        {
+            type: "array",
+            items: {
+                type: "object",
+                properties: {
+                    importNames: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        },
+                        minItems: 1,
+                        uniqueItems: true
+                    },
+                    group: {
+                        type: "array",
+                        items: {
+                            type: "string"
+                        },
+                        minItems: 1,
+                        uniqueItems: true
+                    },
+                    message: {
+                        type: "string",
+                        minLength: 1
+                    },
+                    caseSensitive: {
+                        type: "boolean"
+                    }
+                },
+                additionalProperties: false,
+                required: ["group"]
+            },
+            uniqueItems: true
+        }
+    ]
+};
+
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -55,6 +102,5 @@ meta: {
         docs: {
-            description: "disallow specified modules when loaded by `import`",
-            category: "ECMAScript 6",
+            description: "Disallow specified modules when loaded by `import`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-restricted-imports"
+            url: "https://eslint.org/docs/latest/rules/no-restricted-imports"
         },
@@ -64,13 +110,23 @@
             path: "'{{importSource}}' import is restricted from being used.",
-            // eslint-disable-next-line eslint-plugin/report-message-format
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
             pathWithCustomMessage: "'{{importSource}}' import is restricted from being used. {{customMessage}}",
 
             patterns: "'{{importSource}}' import is restricted from being used by a pattern.",
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
+            patternWithCustomMessage: "'{{importSource}}' import is restricted from being used by a pattern. {{customMessage}}",
 
+            patternAndImportName: "'{{importName}}' import from '{{importSource}}' is restricted from being used by a pattern.",
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
+            patternAndImportNameWithCustomMessage: "'{{importName}}' import from '{{importSource}}' is restricted from being used by a pattern. {{customMessage}}",
+
+            patternAndEverything: "* import is invalid because '{{importNames}}' from '{{importSource}}' is restricted from being used by a pattern.",
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
+            patternAndEverythingWithCustomMessage: "* import is invalid because '{{importNames}}' from '{{importSource}}' is restricted from being used by a pattern. {{customMessage}}",
+
             everything: "* import is invalid because '{{importNames}}' from '{{importSource}}' is restricted.",
-            // eslint-disable-next-line eslint-plugin/report-message-format
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
             everythingWithCustomMessage: "* import is invalid because '{{importNames}}' from '{{importSource}}' is restricted. {{customMessage}}",
 
             importName: "'{{importName}}' import from '{{importSource}}' is restricted.",
-            // eslint-disable-next-line eslint-plugin/report-message-format
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
             importNameWithCustomMessage: "'{{importName}}' import from '{{importSource}}' is restricted. {{customMessage}}"
@@ -88,3 +144,3 @@ },
                             paths: arrayOfStringsOrObjects,
-                            patterns: arrayOfStrings
+                            patterns: arrayOfStringsOrObjectPatterns
                         },
@@ -100,3 +156,3 @@ additionalProperties: false
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const options = Array.isArray(context.options) ? context.options : [];
@@ -108,9 +164,2 @@ const isPathAndPatternsObject =
         const restrictedPaths = (isPathAndPatternsObject ? options[0].paths : context.options) || [];
-        const restrictedPatterns = (isPathAndPatternsObject ? options[0].patterns : []) || [];
-
-        // if no imports are restricted we don"t need to check
-        if (Object.keys(restrictedPaths).length === 0 && restrictedPatterns.length === 0) {
-            return {};
-        }
-
         const restrictedPathMessages = restrictedPaths.reduce((memo, importSource) => {
@@ -128,4 +177,22 @@ if (typeof importSource === "string") {
 
-        const restrictedPatternsMatcher = ignore().add(restrictedPatterns);
+        // Handle patterns too, either as strings or groups
+        let restrictedPatterns = (isPathAndPatternsObject ? options[0].patterns : []) || [];
 
+        // standardize to array of objects if we have an array of strings
+        if (restrictedPatterns.length > 0 && typeof restrictedPatterns[0] === "string") {
+            restrictedPatterns = [{ group: restrictedPatterns }];
+        }
+
+        // relative paths are supported for this rule
+        const restrictedPatternGroups = restrictedPatterns.map(({ group, message, caseSensitive, importNames }) => ({
+            matcher: ignore({ allowRelativePaths: true, ignorecase: !caseSensitive }).add(group),
+            customMessage: message,
+            importNames
+        }));
+
+        // if no imports are restricted we don't need to check
+        if (Object.keys(restrictedPaths).length === 0 && restrictedPatternGroups.length === 0) {
+            return {};
+        }
+
         /**
@@ -196,14 +263,64 @@ * Report a restricted path.
          * @param {node} node representing the restricted path reference
+         * @param {Object} group contains an Ignore instance for paths, the customMessage to show on failure,
+         * and any restricted import names that have been specified in the config
+         * @param {Map<string,Object[]>} importNames Map of import names that are being imported
          * @returns {void}
          * @private
          */
-        function reportPathForPatterns(node) {
+        function reportPathForPatterns(node, group, importNames) {
             const importSource = node.source.value.trim();
 
-            context.report({
-                node,
-                messageId: "patterns",
-                data: {
-                    importSource
+            const customMessage = group.customMessage;
+            const restrictedImportNames = group.importNames;
+
+            /*
+             * If we are not restricting to any specific import names and just the pattern itself,
+             * report the error and move on
+             */
+            if (!restrictedImportNames) {
+                context.report({
+                    node,
+                    messageId: customMessage ? "patternWithCustomMessage" : "patterns",
+                    data: {
+                        importSource,
+                        customMessage
+                    }
+                });
+                return;
+            }
+
+            if (importNames.has("*")) {
+                const specifierData = importNames.get("*")[0];
+
+                context.report({
+                    node,
+                    messageId: customMessage ? "patternAndEverythingWithCustomMessage" : "patternAndEverything",
+                    loc: specifierData.loc,
+                    data: {
+                        importSource,
+                        importNames: restrictedImportNames,
+                        customMessage
+                    }
+                });
+            }
+
+            restrictedImportNames.forEach(importName => {
+                if (!importNames.has(importName)) {
+                    return;
                 }
+
+                const specifiers = importNames.get(importName);
+
+                specifiers.forEach(specifier => {
+                    context.report({
+                        node,
+                        messageId: customMessage ? "patternAndImportNameWithCustomMessage" : "patternAndImportName",
+                        loc: specifier.loc,
+                        data: {
+                            importSource,
+                            customMessage,
+                            importName
+                        }
+                    });
+                });
             });
@@ -215,7 +332,8 @@ }
          * @param {string} importSource path of the import
+         * @param {Object} group contains a Ignore instance for paths, and the customMessage to show if it fails
          * @returns {boolean} whether the variable is a restricted pattern or not
          * @private
          */
-        function isRestrictedPattern(importSource) {
-            return restrictedPatterns.length > 0 && restrictedPatternsMatcher.ignores(importSource);
+        function isRestrictedPattern(importSource, group) {
+            return group.matcher.ignores(importSource);
         }
@@ -247,8 +365,8 @@
                     } else if (specifier.imported) {
-                        name = specifier.imported.name;
+                        name = astUtils.getModuleExportName(specifier.imported);
                     } else if (specifier.local) {
-                        name = specifier.local.name;
+                        name = astUtils.getModuleExportName(specifier.local);
                     }
 
-                    if (name) {
+                    if (typeof name === "string") {
                         if (importNames.has(name)) {
@@ -264,6 +382,7 @@ importNames.get(name).push(specifierData);
             checkRestrictedPathAndReport(importSource, importNames, node);
-
-            if (isRestrictedPattern(importSource)) {
-                reportPathForPatterns(node);
-            }
+            restrictedPatternGroups.forEach(group => {
+                if (isRestrictedPattern(importSource, group)) {
+                    reportPathForPatterns(node, group, importNames);
+                }
+            });
         }
@@ -270,0 +389,0 @@

lib/rules/no-restricted-modules.js

 /**
  * @fileoverview Restrict usage of specified node modules.
  * @author Christian Schulz
+ * @deprecated in ESLint v7.0.0
  */
@@ -8,2 +9,8 @@ "use strict";
 //------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
 // Rule Definition
@@ -42,2 +49,3 @@ //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -52,6 +60,5 @@ meta: {
         docs: {
-            description: "disallow specified modules when loaded by `require`",
-            category: "Node.js and CommonJS",
+            description: "Disallow specified modules when loaded by `require`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-restricted-modules"
+            url: "https://eslint.org/docs/latest/rules/no-restricted-modules"
         },
@@ -79,3 +86,3 @@
             defaultMessage: "'{{name}}' module is restricted from being used.",
-            // eslint-disable-next-line eslint-plugin/report-message-format
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
             customMessage: "'{{name}}' module is restricted from being used. {{customMessage}}",
@@ -104,3 +111,3 @@ patternMessage: "'{{name}}' module is restricted from being used by a pattern."
 
-        // if no imports are restricted we don"t need to check
+        // if no imports are restricted we don't need to check
         if (Object.keys(restrictedPaths).length === 0 && restrictedPatterns.length === 0) {
@@ -110,3 +117,4 @@ return {};
 
-        const ig = ignore().add(restrictedPatterns);
+        // relative paths are supported for this rule
+        const ig = ignore({ allowRelativePaths: true }).add(restrictedPatterns);
 
@@ -124,11 +132,2 @@
         /**
-         * Function to check if a node is a static string template literal.
-         * @param {ASTNode} node The node to check.
-         * @returns {boolean} If the node is a string template literal.
-         */
-        function isStaticTemplateLiteral(node) {
-            return node && node.type === "TemplateLiteral" && node.expressions.length === 0;
-        }
-
-        /**
          * Function to check if a node is a require call.
@@ -152,3 +151,3 @@ * @param {ASTNode} node The node to check.
 
-            if (isStaticTemplateLiteral(node)) {
+            if (astUtils.isStaticTemplateLiteral(node)) {
                 return node.quasis[0].value.cooked.trim();
@@ -155,0 +154,0 @@ }

lib/rules/no-restricted-properties.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "disallow certain properties on certain objects",
-            category: "Best Practices",
+            description: "Disallow certain properties on certain objects",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-restricted-properties"
+            url: "https://eslint.org/docs/latest/rules/no-restricted-properties"
         },
@@ -69,5 +69,5 @@
         messages: {
-            // eslint-disable-next-line eslint-plugin/report-message-format
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
             restrictedObjectProperty: "'{{objectName}}.{{propertyName}}' is restricted from being used.{{message}}",
-            // eslint-disable-next-line eslint-plugin/report-message-format
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
             restrictedProperty: "'{{propertyName}}' is restricted from being used.{{message}}"
@@ -74,0 +74,0 @@ }

lib/rules/no-restricted-syntax.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "disallow specified syntax",
-            category: "Stylistic Issues",
+            description: "Disallow specified syntax",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-restricted-syntax"
+            url: "https://eslint.org/docs/latest/rules/no-restricted-syntax"
         },
@@ -47,3 +47,3 @@
         messages: {
-            // eslint-disable-next-line eslint-plugin/report-message-format
+            // eslint-disable-next-line eslint-plugin/report-message-format -- Custom message might not end in a period
             restrictedSyntax: "{{message}}"
@@ -50,0 +50,0 @@ }

lib/rules/no-return-assign.js

@@ -23,2 +23,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -29,6 +30,5 @@ meta: {
         docs: {
-            description: "disallow assignment operators in `return` statements",
-            category: "Best Practices",
+            description: "Disallow assignment operators in `return` statements",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-return-assign"
+            url: "https://eslint.org/docs/latest/rules/no-return-assign"
         },
@@ -50,3 +50,3 @@
         const always = (context.options[0] || "except-parens") !== "except-parens";
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -53,0 +53,0 @@ return {

lib/rules/no-return-await.js

 /**
  * @fileoverview Disallows unnecessary `return await`
  * @author Jordan Harband
+ * @deprecated in ESLint v8.46.0
  */
@@ -13,13 +14,14 @@ "use strict";
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
     meta: {
+        hasSuggestions: true,
         type: "suggestion",
 
         docs: {
-            description: "disallow unnecessary `return await`",
-            category: "Best Practices",
+            description: "Disallow unnecessary `return await`",
 
             recommended: false,
 
-            url: "https://eslint.org/docs/rules/no-return-await"
+            url: "https://eslint.org/docs/latest/rules/no-return-await"
         },
@@ -29,2 +31,6 @@
 
+        deprecated: true,
+
+        replacedBy: [],
+
         schema: [
@@ -34,2 +40,3 @@ ],
         messages: {
+            removeAwait: "Remove redundant `await`.",
             redundantUseOfAwait: "Redundant use of `await` on a return value."
@@ -48,5 +55,30 @@ }
             context.report({
-                node: context.getSourceCode().getFirstToken(node),
+                node: context.sourceCode.getFirstToken(node),
                 loc: node.loc,
-                messageId: "redundantUseOfAwait"
+                messageId: "redundantUseOfAwait",
+                suggest: [
+                    {
+                        messageId: "removeAwait",
+                        fix(fixer) {
+                            const sourceCode = context.sourceCode;
+                            const [awaitToken, tokenAfterAwait] = sourceCode.getFirstTokens(node, 2);
+
+                            const areAwaitAndAwaitedExpressionOnTheSameLine = awaitToken.loc.start.line === tokenAfterAwait.loc.start.line;
+
+                            if (!areAwaitAndAwaitedExpressionOnTheSameLine) {
+                                return null;
+                            }
+
+                            const [startOfAwait, endOfAwait] = awaitToken.range;
+
+                            const characterAfterAwait = sourceCode.text[endOfAwait];
+                            const trimLength = characterAfterAwait === " " ? 1 : 0;
+
+                            const range = [startOfAwait, endOfAwait + trimLength];
+
+                            return fixer.removeRange(range);
+                        }
+                    }
+                ]
+
             });
@@ -53,0 +85,0 @@ }

lib/rules/no-script-url.js

@@ -5,4 +5,3 @@ /**
  */
-/* jshint scripturl: true */
-/* eslint no-script-url: 0 */
+/* eslint no-script-url: 0 -- Code is checking to report such URLs */
 
@@ -17,2 +16,3 @@ "use strict";
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +23,5 @@ meta: {
         docs: {
-            description: "disallow `javascript:` urls",
-            category: "Best Practices",
+            description: "Disallow `javascript:` urls",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-script-url"
+            url: "https://eslint.org/docs/latest/rules/no-script-url"
         },
@@ -29,0 +28,0 @@

lib/rules/no-self-assign.js

@@ -127,2 +127,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -133,6 +134,5 @@ meta: {
         docs: {
-            description: "disallow assignments where both sides are exactly the same",
-            category: "Best Practices",
+            description: "Disallow assignments where both sides are exactly the same",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-self-assign"
+            url: "https://eslint.org/docs/latest/rules/no-self-assign"
         },
@@ -159,3 +159,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const [{ props = true } = {}] = context.options;
@@ -180,3 +180,3 @@
             AssignmentExpression(node) {
-                if (node.operator === "=") {
+                if (["=", "&&=", "||=", "??="].includes(node.operator)) {
                     eachSelfAssignment(node.left, node.right, props, report);
@@ -183,0 +183,0 @@ }

lib/rules/no-self-compare.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "disallow comparisons where both sides are exactly the same",
-            category: "Best Practices",
+            description: "Disallow comparisons where both sides are exactly the same",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-self-compare"
+            url: "https://eslint.org/docs/latest/rules/no-self-compare"
         },
@@ -34,3 +34,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -37,0 +37,0 @@ /**

lib/rules/no-sequences.js

@@ -15,5 +15,14 @@ /**
 //------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const DEFAULT_OPTIONS = {
+    allowInParentheses: true
+};
+
+//------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,9 +33,16 @@ meta: {
         docs: {
-            description: "disallow comma operators",
-            category: "Best Practices",
+            description: "Disallow comma operators",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-sequences"
+            url: "https://eslint.org/docs/latest/rules/no-sequences"
         },
 
-        schema: [],
+        schema: [{
+            properties: {
+                allowInParentheses: {
+                    type: "boolean",
+                    default: true
+                }
+            },
+            additionalProperties: false
+        }],
 
@@ -39,3 +55,4 @@ messages: {
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const options = Object.assign({}, DEFAULT_OPTIONS, context.options[0]);
+        const sourceCode = context.sourceCode;
 
@@ -105,10 +122,12 @@ /**
                 // Wrapping a sequence in extra parens indicates intent
-                if (requiresExtraParens(node)) {
-                    if (isParenthesisedTwice(node)) {
-                        return;
+                if (options.allowInParentheses) {
+                    if (requiresExtraParens(node)) {
+                        if (isParenthesisedTwice(node)) {
+                            return;
+                        }
+                    } else {
+                        if (isParenthesised(node)) {
+                            return;
+                        }
                     }
-                } else {
-                    if (isParenthesised(node)) {
-                        return;
-                    }
                 }
@@ -115,0 +134,0 @@

lib/rules/no-setter-return.js

@@ -13,3 +13,3 @@ /**
 const astUtils = require("./utils/ast-utils");
-const { findVariable } = require("eslint-utils");
+const { findVariable } = require("@eslint-community/eslint-utils");
 
@@ -97,2 +97,3 @@ //------------------------------------------------------------------------------
     if (
+        (parent.type === "Property" || parent.type === "MethodDefinition") &&
         parent.kind === "set" &&
@@ -140,2 +141,3 @@ parent.value === node
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -146,6 +148,5 @@ meta: {
         docs: {
-            description: "disallow returning values from setters",
-            category: "Possible Errors",
+            description: "Disallow returning values from setters",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-setter-return"
+            url: "https://eslint.org/docs/latest/rules/no-setter-return"
         },
@@ -162,2 +163,3 @@
         let funcInfo = null;
+        const sourceCode = context.sourceCode;
 
@@ -170,3 +172,3 @@ /**
         function enterFunction(node) {
-            const outerScope = getOuterScope(context.getScope());
+            const outerScope = getOuterScope(sourceCode.getScope(node));
 
@@ -173,0 +175,0 @@ funcInfo = {

lib/rules/no-shadow-restricted-names.js

@@ -24,2 +24,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -30,6 +31,5 @@ meta: {
         docs: {
-            description: "disallow identifiers from shadowing restricted names",
-            category: "Variables",
+            description: "Disallow identifiers from shadowing restricted names",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-shadow-restricted-names"
+            url: "https://eslint.org/docs/latest/rules/no-shadow-restricted-names"
         },
@@ -48,6 +48,7 @@
         const RESTRICTED = new Set(["undefined", "NaN", "Infinity", "arguments", "eval"]);
+        const sourceCode = context.sourceCode;
 
         return {
             "VariableDeclaration, :function, CatchClause"(node) {
-                for (const variable of context.getDeclaredVariables(node)) {
+                for (const variable of sourceCode.getDeclaredVariables(node)) {
                     if (variable.defs.length > 0 && RESTRICTED.has(variable.name) && !safelyShadowsUndefined(variable)) {
@@ -54,0 +55,0 @@ context.report({

lib/rules/no-shadow.js

@@ -15,5 +15,15 @@ /**
 //------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const FUNC_EXPR_NODE_TYPES = new Set(["ArrowFunctionExpression", "FunctionExpression"]);
+const CALL_EXPR_NODE_TYPE = new Set(["CallExpression"]);
+const FOR_IN_OF_TYPE = /^For(?:In|Of)Statement$/u;
+const SENTINEL_TYPE = /^(?:(?:Function|Class)(?:Declaration|Expression)|ArrowFunctionExpression|CatchClause|ImportDeclaration|ExportNamedDeclaration)$/u;
+
+//------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +34,5 @@ meta: {
         docs: {
-            description: "disallow variable declarations from shadowing variables declared in the outer scope",
-            category: "Variables",
+            description: "Disallow variable declarations from shadowing variables declared in the outer scope",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-shadow"
+            url: "https://eslint.org/docs/latest/rules/no-shadow"
         },
@@ -42,3 +51,4 @@
                         }
-                    }
+                    },
+                    ignoreOnInitialization: { type: "boolean", default: false }
                 },
@@ -60,12 +70,113 @@ additionalProperties: false
             hoist: (context.options[0] && context.options[0].hoist) || "functions",
-            allow: (context.options[0] && context.options[0].allow) || []
+            allow: (context.options[0] && context.options[0].allow) || [],
+            ignoreOnInitialization: context.options[0] && context.options[0].ignoreOnInitialization
         };
+        const sourceCode = context.sourceCode;
 
         /**
+         * Checks whether or not a given location is inside of the range of a given node.
+         * @param {ASTNode} node An node to check.
+         * @param {number} location A location to check.
+         * @returns {boolean} `true` if the location is inside of the range of the node.
+         */
+        function isInRange(node, location) {
+            return node && node.range[0] <= location && location <= node.range[1];
+        }
+
+        /**
+         * Searches from the current node through its ancestry to find a matching node.
+         * @param {ASTNode} node a node to get.
+         * @param {(node: ASTNode) => boolean} match a callback that checks whether or not the node verifies its condition or not.
+         * @returns {ASTNode|null} the matching node.
+         */
+        function findSelfOrAncestor(node, match) {
+            let currentNode = node;
+
+            while (currentNode && !match(currentNode)) {
+                currentNode = currentNode.parent;
+            }
+            return currentNode;
+        }
+
+        /**
+         * Finds function's outer scope.
+         * @param {Scope} scope Function's own scope.
+         * @returns {Scope} Function's outer scope.
+         */
+        function getOuterScope(scope) {
+            const upper = scope.upper;
+
+            if (upper.type === "function-expression-name") {
+                return upper.upper;
+            }
+            return upper;
+        }
+
+        /**
+         * Checks if a variable and a shadowedVariable have the same init pattern ancestor.
+         * @param {Object} variable a variable to check.
+         * @param {Object} shadowedVariable a shadowedVariable to check.
+         * @returns {boolean} Whether or not the variable and the shadowedVariable have the same init pattern ancestor.
+         */
+        function isInitPatternNode(variable, shadowedVariable) {
+            const outerDef = shadowedVariable.defs[0];
+
+            if (!outerDef) {
+                return false;
+            }
+
+            const { variableScope } = variable.scope;
+
+
+            if (!(FUNC_EXPR_NODE_TYPES.has(variableScope.block.type) && getOuterScope(variableScope) === shadowedVariable.scope)) {
+                return false;
+            }
+
+            const fun = variableScope.block;
+            const { parent } = fun;
+
+            const callExpression = findSelfOrAncestor(
+                parent,
+                node => CALL_EXPR_NODE_TYPE.has(node.type)
+            );
+
+            if (!callExpression) {
+                return false;
+            }
+
+            let node = outerDef.name;
+            const location = callExpression.range[1];
+
+            while (node) {
+                if (node.type === "VariableDeclarator") {
+                    if (isInRange(node.init, location)) {
+                        return true;
+                    }
+                    if (FOR_IN_OF_TYPE.test(node.parent.parent.type) &&
+                        isInRange(node.parent.parent.right, location)
+                    ) {
+                        return true;
+                    }
+                    break;
+                } else if (node.type === "AssignmentPattern") {
+                    if (isInRange(node.right, location)) {
+                        return true;
+                    }
+                } else if (SENTINEL_TYPE.test(node.type)) {
+                    break;
+                }
+
+                node = node.parent;
+            }
+
+            return false;
+        }
+
+        /**
          * Check if variable name is allowed.
-         * @param  {ASTNode} variable The variable to check.
+         * @param {ASTNode} variable The variable to check.
          * @returns {boolean} Whether or not the variable name is allowed.
          */
         function isAllowed(variable) {
-            return options.allow.indexOf(variable.name) !== -1;
+            return options.allow.includes(variable.name);
         }
@@ -106,7 +217,7 @@
                 outer &&
-                inner &&
-                outer[0] < inner[0] &&
-                inner[1] < outer[1] &&
-                ((innerDef.type === "FunctionName" && innerDef.node.type === "FunctionExpression") || innerDef.node.type === "ClassExpression") &&
-                outerScope === innerScope.upper
+                 inner &&
+                 outer[0] < inner[0] &&
+                 inner[1] < outer[1] &&
+                 ((innerDef.type === "FunctionName" && innerDef.node.type === "FunctionExpression") || innerDef.node.type === "ClassExpression") &&
+                 outerScope === innerScope.upper
             );
@@ -162,7 +273,7 @@ }
                 inner &&
-                outer &&
-                inner[1] < outer[0] &&
+                 outer &&
+                 inner[1] < outer[0] &&
 
-                // Excepts FunctionDeclaration if is {"hoist":"function"}.
-                (options.hoist !== "functions" || !outerDef || outerDef.node.type !== "FunctionDeclaration")
+                 // Excepts FunctionDeclaration if is {"hoist":"function"}.
+                 (options.hoist !== "functions" || !outerDef || outerDef.node.type !== "FunctionDeclaration")
             );
@@ -184,4 +295,4 @@ }
                 if (variable.identifiers.length === 0 ||
-                    isDuplicatedClassNameVariable(variable) ||
-                    isAllowed(variable)
+                     isDuplicatedClassNameVariable(variable) ||
+                     isAllowed(variable)
                 ) {
@@ -195,5 +306,6 @@ continue;
                 if (shadowed &&
-                    (shadowed.identifiers.length > 0 || (options.builtinGlobals && "writeable" in shadowed)) &&
-                    !isOnInitializer(variable, shadowed) &&
-                    !(options.hoist !== "all" && isInTdz(variable, shadowed))
+                      (shadowed.identifiers.length > 0 || (options.builtinGlobals && "writeable" in shadowed)) &&
+                      !isOnInitializer(variable, shadowed) &&
+                      !(options.ignoreOnInitialization && isInitPatternNode(variable, shadowed)) &&
+                      !(options.hoist !== "all" && isInTdz(variable, shadowed))
                 ) {
@@ -218,4 +330,4 @@ const location = getDeclaredLocation(shadowed);
         return {
-            "Program:exit"() {
-                const globalScope = context.getScope();
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
                 const stack = globalScope.childScopes.slice();
@@ -222,0 +334,0 @@

lib/rules/no-spaced-func.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "disallow spacing between function identifiers and their applications (deprecated)",
-            category: "Stylistic Issues",
+            description: "Disallow spacing between function identifiers and their applications (deprecated)",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-spaced-func"
+            url: "https://eslint.org/docs/latest/rules/no-spaced-func"
         },
@@ -40,3 +40,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -43,0 +43,0 @@ /**

lib/rules/no-sparse-arrays.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "disallow sparse arrays",
-            category: "Possible Errors",
+            description: "Disallow sparse arrays",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-sparse-arrays"
+            url: "https://eslint.org/docs/latest/rules/no-sparse-arrays"
         },
@@ -42,3 +42,3 @@
 
-                const emptySpot = node.elements.indexOf(null) > -1;
+                const emptySpot = node.elements.includes(null);
 
@@ -45,0 +45,0 @@ if (emptySpot) {

lib/rules/no-sync.js

 /**
  * @fileoverview Rule to check for properties whose identifier ends with the string Sync
  * @author Matt DuVall<http://mattduvall.com/>
+ * @deprecated in ESLint v7.0.0
  */
 
-/* jshint node:true */
-
 "use strict";
@@ -14,2 +13,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +24,5 @@ meta: {
         docs: {
-            description: "disallow synchronous methods",
-            category: "Node.js and CommonJS",
+            description: "Disallow synchronous methods",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-sync"
+            url: "https://eslint.org/docs/latest/rules/no-sync"
         },
@@ -30,0 +29,0 @@

lib/rules/no-tabs.js

@@ -19,2 +19,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -25,6 +26,5 @@ meta: {
         docs: {
-            description: "disallow all tabs",
-            category: "Stylistic Issues",
+            description: "Disallow all tabs",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-tabs"
+            url: "https://eslint.org/docs/latest/rules/no-tabs"
         },
@@ -48,3 +48,3 @@ schema: [{
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const allowIndentationTabs = context.options && context.options[0] && context.options[0].allowIndentationTabs;
@@ -51,0 +51,0 @@

lib/rules/no-template-curly-in-string.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "disallow template literal placeholder syntax in regular strings",
-            category: "Possible Errors",
+            description: "Disallow template literal placeholder syntax in regular strings",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-template-curly-in-string"
+            url: "https://eslint.org/docs/latest/rules/no-template-curly-in-string"
         },
@@ -23,0 +23,0 @@

lib/rules/no-ternary.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow ternary operators",
-            category: "Stylistic Issues",
+            description: "Disallow ternary operators",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-ternary"
+            url: "https://eslint.org/docs/latest/rules/no-ternary"
         },
@@ -24,0 +24,0 @@

lib/rules/no-this-before-super.js

@@ -37,2 +37,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -43,6 +44,5 @@ meta: {
         docs: {
-            description: "disallow `this`/`super` before calling `super()` in constructors",
-            category: "ECMAScript 6",
+            description: "Disallow `this`/`super` before calling `super()` in constructors",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-this-before-super"
+            url: "https://eslint.org/docs/latest/rules/no-this-before-super"
         },
@@ -96,2 +96,17 @@
         /**
+         * Determines if every segment in a set has been called.
+         * @param {Set<CodePathSegment>} segments The segments to search.
+         * @returns {boolean} True if every segment has been called; false otherwise.
+         */
+        function isEverySegmentCalled(segments) {
+            for (const segment of segments) {
+                if (!isCalled(segment)) {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        /**
          * Checks whether or not this is before `super()` is called.
@@ -103,3 +118,3 @@ * @returns {boolean} `true` if this is before `super()` is called.
                 isInConstructorOfDerivedClass() &&
-                !funcInfo.codePath.currentSegments.every(isCalled)
+                !isEverySegmentCalled(funcInfo.currentSegments)
             );
@@ -115,7 +130,5 @@ }
         function setInvalid(node) {
-            const segments = funcInfo.codePath.currentSegments;
+            const segments = funcInfo.currentSegments;
 
-            for (let i = 0; i < segments.length; ++i) {
-                const segment = segments[i];
-
+            for (const segment of segments) {
                 if (segment.reachable) {
@@ -132,7 +145,5 @@ segInfoMap[segment.id].invalidNodes.push(node);
         function setSuperCalled() {
-            const segments = funcInfo.codePath.currentSegments;
+            const segments = funcInfo.currentSegments;
 
-            for (let i = 0; i < segments.length; ++i) {
-                const segment = segments[i];
-
+            for (const segment of segments) {
                 if (segment.reachable) {
@@ -165,3 +176,4 @@ segInfoMap[segment.id].superCalled = true;
                         ),
-                        codePath
+                        codePath,
+                        currentSegments: new Set()
                     };
@@ -173,3 +185,4 @@ } else {
                         hasExtends: false,
-                        codePath
+                        codePath,
+                        currentSegments: new Set()
                     };
@@ -222,2 +235,4 @@ }
             onCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+
                 if (!isInConstructorOfDerivedClass()) {
@@ -237,2 +252,14 @@ return;
 
+            onUnreachableCodePathSegmentStart(segment) {
+                funcInfo.currentSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                funcInfo.currentSegments.delete(segment);
+            },
+
             /**
@@ -239,0 +266,0 @@ * Update information of the code path segment when a code path was

lib/rules/no-throw-literal.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "disallow throwing literals as exceptions",
-            category: "Best Practices",
+            description: "Disallow throwing literals as exceptions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-throw-literal"
+            url: "https://eslint.org/docs/latest/rules/no-throw-literal"
         },
@@ -26,0 +26,0 @@

lib/rules/no-trailing-spaces.js

@@ -17,2 +17,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +24,5 @@ meta: {
         docs: {
-            description: "disallow trailing whitespace at the end of lines",
-            category: "Stylistic Issues",
+            description: "Disallow trailing whitespace at the end of lines",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-trailing-spaces"
+            url: "https://eslint.org/docs/latest/rules/no-trailing-spaces"
         },
@@ -55,3 +55,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -58,0 +58,0 @@ const BLANK_CLASS = "[ \t\u00a0\u2000-\u200b\u3000]",

lib/rules/no-undef-init.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "disallow initializing variables to `undefined`",
-            category: "Variables",
+            description: "Disallow initializing variables to `undefined`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-undef-init"
+            url: "https://eslint.org/docs/latest/rules/no-undef-init"
         },
@@ -37,3 +37,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -45,3 +45,3 @@ return {
                     init = node.init && node.init.name,
-                    scope = context.getScope(),
+                    scope = sourceCode.getScope(node),
                     undefinedVar = astUtils.getVariableByName(scope, "undefined"),
@@ -48,0 +48,0 @@ shadowed = undefinedVar && undefinedVar.defs.length > 0,

lib/rules/no-undef.js

@@ -26,2 +26,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -32,6 +33,5 @@ meta: {
         docs: {
-            description: "disallow the use of undeclared variables unless mentioned in `/*global */` comments",
-            category: "Variables",
+            description: "Disallow the use of undeclared variables unless mentioned in `/*global */` comments",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-undef"
+            url: "https://eslint.org/docs/latest/rules/no-undef"
         },
@@ -59,6 +59,7 @@
         const considerTypeOf = options && options.typeof === true || false;
+        const sourceCode = context.sourceCode;
 
         return {
-            "Program:exit"(/* node */) {
-                const globalScope = context.getScope();
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
 
@@ -65,0 +66,0 @@ globalScope.through.forEach(ref => {

lib/rules/no-undefined.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "disallow the use of `undefined` as an identifier",
-            category: "Variables",
+            description: "Disallow the use of `undefined` as an identifier",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-undefined"
+            url: "https://eslint.org/docs/latest/rules/no-undefined"
         },
@@ -33,2 +33,4 @@
 
+        const sourceCode = context.sourceCode;
+
         /**
@@ -72,4 +74,4 @@ * Report an invalid "undefined" identifier node.
         return {
-            "Program:exit"() {
-                const globalScope = context.getScope();
+            "Program:exit"(node) {
+                const globalScope = sourceCode.getScope(node);
 
@@ -76,0 +78,0 @@ const stack = [globalScope];

lib/rules/no-underscore-dangle.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow dangling underscores in identifiers",
-            category: "Stylistic Issues",
+            description: "Disallow dangling underscores in identifiers",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-underscore-dangle"
+            url: "https://eslint.org/docs/latest/rules/no-underscore-dangle"
         },
@@ -54,2 +54,14 @@
                         default: true
+                    },
+                    enforceInClassFields: {
+                        type: "boolean",
+                        default: false
+                    },
+                    allowInArrayDestructuring: {
+                        type: "boolean",
+                        default: true
+                    },
+                    allowInObjectDestructuring: {
+                        type: "boolean",
+                        default: true
                     }
@@ -74,3 +86,7 @@ },
         const enforceInMethodNames = typeof options.enforceInMethodNames !== "undefined" ? options.enforceInMethodNames : false;
+        const enforceInClassFields = typeof options.enforceInClassFields !== "undefined" ? options.enforceInClassFields : false;
         const allowFunctionParams = typeof options.allowFunctionParams !== "undefined" ? options.allowFunctionParams : true;
+        const allowInArrayDestructuring = typeof options.allowInArrayDestructuring !== "undefined" ? options.allowInArrayDestructuring : true;
+        const allowInObjectDestructuring = typeof options.allowInObjectDestructuring !== "undefined" ? options.allowInObjectDestructuring : true;
+        const sourceCode = context.sourceCode;
 
@@ -88,3 +104,3 @@ //-------------------------------------------------------------------------
         function isAllowed(identifier) {
-            return ALLOWED_VARIABLES.some(ident => ident === identifier);
+            return ALLOWED_VARIABLES.includes(identifier);
         }
@@ -198,2 +214,3 @@
 
+
         /**
@@ -206,14 +223,28 @@ * Check if variable expression has a dangling underscore
         function checkForDanglingUnderscoreInVariableExpression(node) {
-            const identifier = node.id.name;
+            sourceCode.getDeclaredVariables(node).forEach(variable => {
+                const definition = variable.defs.find(def => def.node === node);
+                const identifierNode = definition.name;
+                const identifier = identifierNode.name;
+                let parent = identifierNode.parent;
 
-            if (typeof identifier !== "undefined" && hasDanglingUnderscore(identifier) &&
-                !isSpecialCaseIdentifierInVariableExpression(identifier) && !isAllowed(identifier)) {
-                context.report({
-                    node,
-                    messageId: "unexpectedUnderscore",
-                    data: {
-                        identifier
-                    }
-                });
-            }
+                while (!["VariableDeclarator", "ArrayPattern", "ObjectPattern"].includes(parent.type)) {
+                    parent = parent.parent;
+                }
+
+                if (
+                    hasDanglingUnderscore(identifier) &&
+                    !isSpecialCaseIdentifierInVariableExpression(identifier) &&
+                    !isAllowed(identifier) &&
+                    !(allowInArrayDestructuring && parent.type === "ArrayPattern") &&
+                    !(allowInObjectDestructuring && parent.type === "ObjectPattern")
+                ) {
+                    context.report({
+                        node,
+                        messageId: "unexpectedUnderscore",
+                        data: {
+                            identifier
+                        }
+                    });
+                }
+            });
         }
@@ -263,3 +294,5 @@
                     data: {
-                        identifier
+                        identifier: node.key.type === "PrivateIdentifier"
+                            ? `#${identifier}`
+                            : identifier
                     }
@@ -270,2 +303,26 @@ });
 
+        /**
+         * Check if a class field has a dangling underscore
+         * @param {ASTNode} node node to evaluate
+         * @returns {void}
+         * @private
+         */
+        function checkForDanglingUnderscoreInClassField(node) {
+            const identifier = node.key.name;
+
+            if (typeof identifier !== "undefined" && hasDanglingUnderscore(identifier) &&
+                enforceInClassFields &&
+                !isAllowed(identifier)) {
+                context.report({
+                    node,
+                    messageId: "unexpectedUnderscore",
+                    data: {
+                        identifier: node.key.type === "PrivateIdentifier"
+                            ? `#${identifier}`
+                            : identifier
+                    }
+                });
+            }
+        }
+
         //--------------------------------------------------------------------------
@@ -280,2 +337,3 @@ // Public API
             MethodDefinition: checkForDanglingUnderscoreInMethod,
+            PropertyDefinition: checkForDanglingUnderscoreInClassField,
             Property: checkForDanglingUnderscoreInMethod,
@@ -282,0 +340,0 @@ FunctionExpression: checkForDanglingUnderscoreInFunction,

lib/rules/no-unexpected-multiline.js

@@ -17,2 +17,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +24,5 @@ meta: {
         docs: {
-            description: "disallow confusing multiline expressions",
-            category: "Possible Errors",
+            description: "Disallow confusing multiline expressions",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-unexpected-multiline"
+            url: "https://eslint.org/docs/latest/rules/no-unexpected-multiline"
         },
@@ -43,3 +43,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -46,0 +46,0 @@ /**

lib/rules/no-unmodified-loop-condition.js

@@ -159,2 +159,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -165,6 +166,5 @@ meta: {
         docs: {
-            description: "disallow unmodified loop conditions",
-            category: "Best Practices",
+            description: "Disallow unmodified loop conditions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-unmodified-loop-condition"
+            url: "https://eslint.org/docs/latest/rules/no-unmodified-loop-condition"
         },
@@ -180,3 +180,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         let groupMap = null;
@@ -346,4 +346,4 @@
         return {
-            "Program:exit"() {
-                const queue = [context.getScope()];
+            "Program:exit"(node) {
+                const queue = [sourceCode.getScope(node)];
 
@@ -350,0 +350,0 @@ groupMap = new Map();

lib/rules/no-unneeded-ternary.js

@@ -26,2 +26,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -32,6 +33,5 @@ meta: {
         docs: {
-            description: "disallow ternary operators when simpler alternatives exist",
-            category: "Stylistic Issues",
+            description: "Disallow ternary operators when simpler alternatives exist",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-unneeded-ternary"
+            url: "https://eslint.org/docs/latest/rules/no-unneeded-ternary"
         },
@@ -63,3 +63,3 @@
         const defaultAssignment = options.defaultAssignment !== false;
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -150,3 +150,3 @@ /**
                         messageId: "unnecessaryConditionalAssignment",
-                        fix: fixer => {
+                        fix(fixer) {
                             const shouldParenthesizeAlternate =
@@ -153,0 +153,0 @@ (

lib/rules/no-unreachable-loop.js

@@ -15,2 +15,18 @@ /**
 /**
+ * Checks all segments in a set and returns true if any are reachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if any segment is reachable; false otherwise.
+ */
+function isAnySegmentReachable(segments) {
+
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+/**
  * Determines whether the given node is the first node in the code path to which a loop statement
@@ -57,2 +73,3 @@ * 'loops' for the next iteration.
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -63,6 +80,5 @@ meta: {
         docs: {
-            description: "disallow loops with a body that allows only one iteration",
-            category: "Possible Errors",
+            description: "Disallow loops with a body that allows only one iteration",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-unreachable-loop"
+            url: "https://eslint.org/docs/latest/rules/no-unreachable-loop"
         },
@@ -96,25 +112,32 @@
 
-        let currentCodePath = null;
+        const codePathSegments = [];
+        let currentCodePathSegments = new Set();
 
         return {
-            onCodePathStart(codePath) {
-                currentCodePath = codePath;
+
+            onCodePathStart() {
+                codePathSegments.push(currentCodePathSegments);
+                currentCodePathSegments = new Set();
             },
 
             onCodePathEnd() {
-                currentCodePath = currentCodePath.upper;
+                currentCodePathSegments = codePathSegments.pop();
             },
 
-            [loopSelector](node) {
+            onUnreachableCodePathSegmentStart(segment) {
+                currentCodePathSegments.add(segment);
+            },
 
-                /**
-                 * Ignore unreachable loop statements to avoid unnecessary complexity in the implementation, or false positives otherwise.
-                 * For unreachable segments, the code path analysis does not raise events required for this implementation.
-                 */
-                if (currentCodePath.currentSegments.some(segment => segment.reachable)) {
-                    loopsToReport.add(node);
-                }
+            onUnreachableCodePathSegmentEnd(segment) {
+                currentCodePathSegments.delete(segment);
             },
 
+            onCodePathSegmentEnd(segment) {
+                currentCodePathSegments.delete(segment);
+            },
+
             onCodePathSegmentStart(segment, node) {
+
+                currentCodePathSegments.add(segment);
+
                 if (isLoopingTarget(node)) {
@@ -147,2 +170,14 @@ const loop = node.parent;
 
+            [loopSelector](node) {
+
+                /**
+                 * Ignore unreachable loop statements to avoid unnecessary complexity in the implementation, or false positives otherwise.
+                 * For unreachable segments, the code path analysis does not raise events required for this implementation.
+                 */
+                if (isAnySegmentReachable(currentCodePathSegments)) {
+                    loopsToReport.add(node);
+                }
+            },
+
+
             "Program:exit"() {
@@ -149,0 +184,0 @@ loopsToReport.forEach(

lib/rules/no-unreachable.js

@@ -12,2 +12,8 @@ /**
 /**
+ * @typedef {Object} ConstructorInfo
+ * @property {ConstructorInfo | null} upper Info about the constructor that encloses this constructor.
+ * @property {boolean} hasSuperCall The flag about having `super()` expressions.
+ */
+
+/**
  * Checks whether or not a given variable declarator has the initializer.
@@ -22,8 +28,15 @@ * @param {ASTNode} node A VariableDeclarator node to check.
 /**
- * Checks whether or not a given code path segment is unreachable.
- * @param {CodePathSegment} segment A CodePathSegment to check.
- * @returns {boolean} `true` if the segment is unreachable.
+ * Checks all segments in a set and returns true if all are unreachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if all segments are unreachable; false otherwise.
  */
-function isUnreachable(segment) {
-    return !segment.reachable;
+function areAllSegmentsUnreachable(segments) {
+
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return false;
+        }
+    }
+
+    return true;
 }
@@ -104,2 +117,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -110,6 +124,5 @@ meta: {
         docs: {
-            description: "disallow unreachable code after `return`, `throw`, `continue`, and `break` statements",
-            category: "Possible Errors",
+            description: "Disallow unreachable code after `return`, `throw`, `continue`, and `break` statements",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-unreachable"
+            url: "https://eslint.org/docs/latest/rules/no-unreachable"
         },
@@ -125,6 +138,15 @@
     create(context) {
-        let currentCodePath = null;
 
-        const range = new ConsecutiveRange(context.getSourceCode());
+        /** @type {ConstructorInfo | null} */
+        let constructorInfo = null;
 
+        /** @type {ConsecutiveRange} */
+        const range = new ConsecutiveRange(context.sourceCode);
+
+        /** @type {Array<Set<CodePathSegment>>} */
+        const codePathSegments = [];
+
+        /** @type {Set<CodePathSegment>} */
+        let currentCodePathSegments = new Set();
+
         /**
@@ -138,3 +160,3 @@ * Reports a given node if it's unreachable.
 
-            if (node && currentCodePath.currentSegments.every(isUnreachable)) {
+            if (node && (node.type === "PropertyDefinition" || areAllSegmentsUnreachable(currentCodePathSegments))) {
 
@@ -180,10 +202,27 @@ // Store this statement to distinguish consecutive statements.
             // Manages the current code path.
-            onCodePathStart(codePath) {
-                currentCodePath = codePath;
+            onCodePathStart() {
+                codePathSegments.push(currentCodePathSegments);
+                currentCodePathSegments = new Set();
             },
 
             onCodePathEnd() {
-                currentCodePath = currentCodePath.upper;
+                currentCodePathSegments = codePathSegments.pop();
             },
 
+            onUnreachableCodePathSegmentStart(segment) {
+                currentCodePathSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                currentCodePathSegments.delete(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                currentCodePathSegments.delete(segment);
+            },
+
+            onCodePathSegmentStart(segment) {
+                currentCodePathSegments.add(segment);
+            },
+
             // Registers for all statement nodes (excludes FunctionDeclaration).
@@ -222,2 +261,38 @@ BlockStatement: reportIfUnreachable,
                 reportIfUnreachable();
+            },
+
+            /*
+             * Instance fields defined in a subclass are never created if the constructor of the subclass
+             * doesn't call `super()`, so their definitions are unreachable code.
+             */
+            "MethodDefinition[kind='constructor']"() {
+                constructorInfo = {
+                    upper: constructorInfo,
+                    hasSuperCall: false
+                };
+            },
+            "MethodDefinition[kind='constructor']:exit"(node) {
+                const { hasSuperCall } = constructorInfo;
+
+                constructorInfo = constructorInfo.upper;
+
+                // skip typescript constructors without the body
+                if (!node.value.body) {
+                    return;
+                }
+
+                const classDefinition = node.parent.parent;
+
+                if (classDefinition.superClass && !hasSuperCall) {
+                    for (const element of classDefinition.body.body) {
+                        if (element.type === "PropertyDefinition" && !element.static) {
+                            reportIfUnreachable(element);
+                        }
+                    }
+                }
+            },
+            "CallExpression > Super.callee"() {
+                if (constructorInfo) {
+                    constructorInfo.hasSuperCall = true;
+                }
             }
@@ -224,0 +299,0 @@ };

lib/rules/no-unsafe-finally.js

@@ -21,2 +21,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -27,6 +28,5 @@ meta: {
         docs: {
-            description: "disallow control flow statements in `finally` blocks",
-            category: "Possible Errors",
+            description: "Disallow control flow statements in `finally` blocks",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-unsafe-finally"
+            url: "https://eslint.org/docs/latest/rules/no-unsafe-finally"
         },
@@ -33,0 +33,0 @@

lib/rules/no-unsafe-negation.js

@@ -49,2 +49,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -55,9 +56,9 @@ meta: {
         docs: {
-            description: "disallow negating the left operand of relational operators",
-            category: "Possible Errors",
+            description: "Disallow negating the left operand of relational operators",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-unsafe-negation",
-            suggestion: true
+            url: "https://eslint.org/docs/latest/rules/no-unsafe-negation"
         },
 
+        hasSuggestions: true,
+
         schema: [
@@ -86,3 +87,3 @@ {
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const options = context.options[0] || {};
@@ -89,0 +90,0 @@ const enforceForOrderingRelations = options.enforceForOrderingRelations === true;

lib/rules/no-unsafe-optional-chaining.js

@@ -21,2 +21,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -27,6 +28,5 @@ meta: {
         docs: {
-            description: "disallow use of optional chaining in contexts where the `undefined` value is not allowed",
-            category: "Possible Errors",
-            recommended: false,
-            url: "https://eslint.org/docs/rules/no-unsafe-optional-chaining"
+            description: "Disallow use of optional chaining in contexts where the `undefined` value is not allowed",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-unsafe-optional-chaining"
         },
@@ -33,0 +33,0 @@ schema: [{

lib/rules/no-unused-expressions.js

@@ -7,2 +7,4 @@ /**
 
+const astUtils = require("./utils/ast-utils");
+
 //------------------------------------------------------------------------------
@@ -28,2 +30,3 @@ // Rule Definition
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -34,6 +37,5 @@ meta: {
         docs: {
-            description: "disallow unused expressions",
-            category: "Best Practices",
+            description: "Disallow unused expressions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-unused-expressions"
+            url: "https://eslint.org/docs/latest/rules/no-unused-expressions"
         },
@@ -78,4 +80,4 @@
 
-        // eslint-disable-next-line jsdoc/require-description
         /**
+         * Has AST suggesting a directive.
          * @param {ASTNode} node any node
@@ -89,4 +91,4 @@ * @returns {boolean} whether the given node structurally represents a directive
 
-        // eslint-disable-next-line jsdoc/require-description
         /**
+         * Gets the leading sequence of members in a list that pass the predicate.
          * @param {Function} predicate ([a] -> Boolean) the function used to make the determination
@@ -105,4 +107,4 @@ * @param {a[]} list the input list
 
-        // eslint-disable-next-line jsdoc/require-description
         /**
+         * Gets leading directives nodes in a Node body.
          * @param {ASTNode} node a Program or BlockStatement node
@@ -115,15 +117,16 @@ * @returns {ASTNode[]} the leading sequence of directive nodes in the given node's body
 
-        // eslint-disable-next-line jsdoc/require-description
         /**
+         * Detect if a Node is a directive.
          * @param {ASTNode} node any node
-         * @param {ASTNode[]} ancestors the given node's ancestors
          * @returns {boolean} whether the given node is considered a directive in its current position
          */
-        function isDirective(node, ancestors) {
-            const parent = ancestors[ancestors.length - 1],
-                grandparent = ancestors[ancestors.length - 2];
+        function isDirective(node) {
 
-            return (parent.type === "Program" || parent.type === "BlockStatement" &&
-                    (/Function/u.test(grandparent.type))) &&
-                    directives(parent).indexOf(node) >= 0;
+            /**
+             * https://tc39.es/ecma262/#directive-prologue
+             *
+             * Only `FunctionBody`, `ScriptBody` and `ModuleBody` can have directive prologue.
+             * Class static blocks do not have directive prologue.
+             */
+            return astUtils.isTopLevelExpressionStatement(node) && directives(node.parent).includes(node);
         }
@@ -184,3 +187,3 @@
             ExpressionStatement(node) {
-                if (Checker.isDisallowed(node.expression) && !isDirective(node, context.getAncestors())) {
+                if (Checker.isDisallowed(node.expression) && !isDirective(node)) {
                     context.report({ node, messageId: "unusedExpression" });
@@ -187,0 +190,0 @@ }

lib/rules/no-unused-labels.js

@@ -9,5 +9,12 @@ /**
 //------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +25,5 @@ meta: {
         docs: {
-            description: "disallow unused labels",
-            category: "Best Practices",
+            description: "Disallow unused labels",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-unused-labels"
+            url: "https://eslint.org/docs/latest/rules/no-unused-labels"
         },
@@ -35,3 +41,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         let scopeInfo = null;
@@ -53,2 +59,41 @@
         /**
+         * Checks if a `LabeledStatement` node is fixable.
+         * For a node to be fixable, there must be no comments between the label and the body.
+         * Furthermore, is must be possible to remove the label without turning the body statement into a
+         * directive after other fixes are applied.
+         * @param {ASTNode} node The node to evaluate.
+         * @returns {boolean} Whether or not the node is fixable.
+         */
+        function isFixable(node) {
+
+            /*
+             * Only perform a fix if there are no comments between the label and the body. This will be the case
+             * when there is exactly one token/comment (the ":") between the label and the body.
+             */
+            if (sourceCode.getTokenAfter(node.label, { includeComments: true }) !==
+                sourceCode.getTokenBefore(node.body, { includeComments: true })) {
+                return false;
+            }
+
+            // Looking for the node's deepest ancestor which is not a `LabeledStatement`.
+            let ancestor = node.parent;
+
+            while (ancestor.type === "LabeledStatement") {
+                ancestor = ancestor.parent;
+            }
+
+            if (ancestor.type === "Program" ||
+                (ancestor.type === "BlockStatement" && astUtils.isFunction(ancestor.parent))) {
+                const { body } = node;
+
+                if (body.type === "ExpressionStatement" &&
+                    ((body.expression.type === "Literal" && typeof body.expression.value === "string") ||
+                    astUtils.isStaticTemplateLiteral(body.expression))) {
+                    return false; // potential directive
+                }
+            }
+            return true;
+        }
+
+        /**
          * Removes the top of the stack.
@@ -65,15 +110,3 @@ * At the same time, this reports the label if it's never used.
                     data: node.label,
-                    fix(fixer) {
-
-                        /*
-                         * Only perform a fix if there are no comments between the label and the body. This will be the case
-                         * when there is exactly one token/comment (the ":") between the label and the body.
-                         */
-                        if (sourceCode.getTokenAfter(node.label, { includeComments: true }) ===
-                                sourceCode.getTokenBefore(node.body, { includeComments: true })) {
-                            return fixer.removeRange([node.range[0], node.body.range[0]]);
-                        }
-
-                        return null;
-                    }
+                    fix: isFixable(node) ? fixer => fixer.removeRange([node.range[0], node.body.range[0]]) : null
                 });
@@ -80,0 +113,0 @@ }

lib/rules/no-unused-vars.js

@@ -30,2 +30,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -36,6 +37,5 @@ meta: {
         docs: {
-            description: "disallow unused variables",
-            category: "Variables",
+            description: "Disallow unused variables",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-unused-vars"
+            url: "https://eslint.org/docs/latest/rules/no-unused-vars"
         },
@@ -72,2 +72,5 @@
                                 type: "string"
+                            },
+                            destructuredArrayIgnorePattern: {
+                                type: "string"
                             }
@@ -87,3 +90,3 @@ },
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -121,2 +124,6 @@ const REST_PROPERTY_TYPE = /^(?:RestElement|(?:Experimental)?RestProperty)$/u;
                 }
+
+                if (firstOption.destructuredArrayIgnorePattern) {
+                    config.destructuredArrayIgnorePattern = new RegExp(firstOption.destructuredArrayIgnorePattern, "u");
+                }
             }
@@ -163,4 +170,11 @@ }
         function getAssignedMessageData(unusedVar) {
-            const additional = config.varsIgnorePattern ? `. Allowed unused vars must match ${config.varsIgnorePattern.toString()}` : "";
+            const def = unusedVar.defs[0];
+            let additional = "";
 
+            if (config.destructuredArrayIgnorePattern && def && def.name.parent.type === "ArrayPattern") {
+                additional = `. Allowed unused elements of array destructuring patterns must match ${config.destructuredArrayIgnorePattern.toString()}`;
+            } else if (config.varsIgnorePattern) {
+                additional = `. Allowed unused vars must match ${config.varsIgnorePattern.toString()}`;
+            }
+
             return {
@@ -206,2 +220,13 @@ varName: unusedVar.name,
         /**
+         * Checks whether a node is a sibling of the rest property or not.
+         * @param {ASTNode} node a node to check
+         * @returns {boolean} True if the node is a sibling of the rest property, otherwise false.
+         */
+        function hasRestSibling(node) {
+            return node.type === "Property" &&
+                node.parent.type === "ObjectPattern" &&
+                REST_PROPERTY_TYPE.test(node.parent.properties[node.parent.properties.length - 1].type);
+        }
+
+        /**
          * Determines if a variable has a sibling rest property
@@ -214,12 +239,6 @@ * @param {Variable} variable eslint-scope variable object.
             if (config.ignoreRestSiblings) {
-                return variable.defs.some(def => {
-                    const propertyNode = def.name.parent;
-                    const patternNode = propertyNode.parent;
+                const hasRestSiblingDefinition = variable.defs.some(def => hasRestSibling(def.name.parent));
+                const hasRestSiblingReference = variable.references.some(ref => hasRestSibling(ref.identifier.parent));
 
-                    return (
-                        propertyNode.type === "Property" &&
-                        patternNode.type === "ObjectPattern" &&
-                        REST_PROPERTY_TYPE.test(patternNode.properties[patternNode.properties.length - 1].type)
-                    );
-                });
+                return hasRestSiblingDefinition || hasRestSiblingReference;
             }
@@ -251,3 +270,3 @@
             while (scope) {
-                if (nodes.indexOf(scope.block) >= 0) {
+                if (nodes.includes(scope.block)) {
                     return true;
@@ -303,2 +322,27 @@ }
         /**
+         * Checks whether a given node is unused expression or not.
+         * @param {ASTNode} node The node itself
+         * @returns {boolean} The node is an unused expression.
+         * @private
+         */
+        function isUnusedExpression(node) {
+            const parent = node.parent;
+
+            if (parent.type === "ExpressionStatement") {
+                return true;
+            }
+
+            if (parent.type === "SequenceExpression") {
+                const isLastExpression = parent.expressions[parent.expressions.length - 1] === node;
+
+                if (!isLastExpression) {
+                    return true;
+                }
+                return isUnusedExpression(parent);
+            }
+
+            return false;
+        }
+
+        /**
          * If a given reference is left-hand side of an assignment, this gets
@@ -321,3 +365,2 @@ * the right-hand side node of the assignment.
             const parent = id.parent;
-            const grandparent = parent.parent;
             const refScope = ref.from.variableScope;
@@ -336,3 +379,3 @@ const varScope = ref.resolved.scope.variableScope;
             if (parent.type === "AssignmentExpression" &&
-                grandparent.type === "ExpressionStatement" &&
+                isUnusedExpression(parent) &&
                 id === parent.left &&
@@ -430,3 +473,2 @@ !canBeUsedLater
             const parent = id.parent;
-            const grandparent = parent.parent;
 
@@ -436,14 +478,21 @@ return ref.isRead() && (
                 // self update. e.g. `a += 1`, `a++`
-                (// in RHS of an assignment for itself. e.g. `a = a + 1`
-                    ((
+                (
+                    (
                         parent.type === "AssignmentExpression" &&
-                    grandparent.type === "ExpressionStatement" &&
-                    parent.left === id
+                        parent.left === id &&
+                        isUnusedExpression(parent) &&
+                        !astUtils.isLogicalAssignmentOperator(parent.operator)
                     ) ||
+                    (
+                        parent.type === "UpdateExpression" &&
+                        isUnusedExpression(parent)
+                    )
+                ) ||
+
+                // in RHS of an assignment for itself. e.g. `a = a + 1`
                 (
-                    parent.type === "UpdateExpression" &&
-                    grandparent.type === "ExpressionStatement"
-                ) || rhsNode &&
-                isInside(id, rhsNode) &&
-                !isInsideOfStorableFunction(id, rhsNode)))
+                    rhsNode &&
+                    isInside(id, rhsNode) &&
+                    !isInsideOfStorableFunction(id, rhsNode)
+                )
             );
@@ -453,3 +502,3 @@ }
         /**
-         * Determine if an identifier is used either in for-in loops.
+         * Determine if an identifier is used either in for-in or for-of loops.
          * @param {Reference} ref The reference to check.
@@ -459,3 +508,3 @@ * @returns {boolean} whether reference is used in the for-in loops
          */
-        function isForInRef(ref) {
+        function isForInOfRef(ref) {
             let target = ref.identifier.parent;
@@ -469,3 +518,3 @@
 
-            if (target.type !== "ForInStatement") {
+            if (target.type !== "ForInStatement" && target.type !== "ForOfStatement") {
                 return false;
@@ -503,3 +552,3 @@ }
             return variable.references.some(ref => {
-                if (isForInRef(ref)) {
+                if (isForInOfRef(ref)) {
                     return true;
@@ -528,3 +577,3 @@ }
             const def = variable.defs[0];
-            const params = context.getDeclaredVariables(def.node);
+            const params = sourceCode.getDeclaredVariables(def.node);
             const posteriorParams = params.slice(params.indexOf(variable) + 1);
@@ -572,3 +621,16 @@
                         const type = def.type;
+                        const refUsedInArrayPatterns = variable.references.some(ref => ref.identifier.parent.type === "ArrayPattern");
 
+                        // skip elements of array destructuring patterns
+                        if (
+                            (
+                                def.name.parent.type === "ArrayPattern" ||
+                                refUsedInArrayPatterns
+                            ) &&
+                            config.destructuredArrayIgnorePattern &&
+                            config.destructuredArrayIgnorePattern.test(def.name.name)
+                        ) {
+                            continue;
+                        }
+
                         // skip catch variables
@@ -635,3 +697,3 @@ if (type === "CatchClause") {
             "Program:exit"(programNode) {
-                const unusedVars = collectUnusedVariables(context.getScope(), []);
+                const unusedVars = collectUnusedVariables(sourceCode.getScope(programNode), []);
 
@@ -643,6 +705,14 @@ for (let i = 0, l = unusedVars.length; i < l; ++i) {
                     if (unusedVar.defs.length > 0) {
+
+                        // report last write reference, https://github.com/eslint/eslint/issues/14324
+                        const writeReferences = unusedVar.references.filter(ref => ref.isWrite() && ref.from.variableScope === unusedVar.scope.variableScope);
+
+                        let referenceToReport;
+
+                        if (writeReferences.length > 0) {
+                            referenceToReport = writeReferences[writeReferences.length - 1];
+                        }
+
                         context.report({
-                            node: unusedVar.references.length ? unusedVar.references[
-                                unusedVar.references.length - 1
-                            ].identifier : unusedVar.identifiers[0],
+                            node: referenceToReport ? referenceToReport.identifier : unusedVar.identifiers[0],
                             messageId: "unusedVar",
@@ -649,0 +719,0 @@ data: unusedVar.references.some(ref => ref.isWrite())

lib/rules/no-use-before-define.js

@@ -24,2 +24,3 @@ /**
     let variables = true;
+    let allowNamedExports = false;
 
@@ -32,54 +33,116 @@ if (typeof options === "string") {
         variables = options.variables !== false;
+        allowNamedExports = !!options.allowNamedExports;
     }
 
-    return { functions, classes, variables };
+    return { functions, classes, variables, allowNamedExports };
 }
 
 /**
- * Checks whether or not a given variable is a function declaration.
- * @param {eslint-scope.Variable} variable A variable to check.
- * @returns {boolean} `true` if the variable is a function declaration.
+ * Checks whether or not a given location is inside of the range of a given node.
+ * @param {ASTNode} node An node to check.
+ * @param {number} location A location to check.
+ * @returns {boolean} `true` if the location is inside of the range of the node.
  */
-function isFunction(variable) {
-    return variable.defs[0].type === "FunctionName";
+function isInRange(node, location) {
+    return node && node.range[0] <= location && location <= node.range[1];
 }
 
 /**
- * Checks whether or not a given variable is a class declaration in an upper function scope.
- * @param {eslint-scope.Variable} variable A variable to check.
- * @param {eslint-scope.Reference} reference A reference to check.
- * @returns {boolean} `true` if the variable is a class declaration.
+ * Checks whether or not a given location is inside of the range of a class static initializer.
+ * Static initializers are static blocks and initializers of static fields.
+ * @param {ASTNode} node `ClassBody` node to check static initializers.
+ * @param {number} location A location to check.
+ * @returns {boolean} `true` if the location is inside of a class static initializer.
  */
-function isOuterClass(variable, reference) {
-    return (
-        variable.defs[0].type === "ClassName" &&
-        variable.scope.variableScope !== reference.from.variableScope
-    );
+function isInClassStaticInitializerRange(node, location) {
+    return node.body.some(classMember => (
+        (
+            classMember.type === "StaticBlock" &&
+            isInRange(classMember, location)
+        ) ||
+        (
+            classMember.type === "PropertyDefinition" &&
+            classMember.static &&
+            classMember.value &&
+            isInRange(classMember.value, location)
+        )
+    ));
 }
 
 /**
- * Checks whether or not a given variable is a variable declaration in an upper function scope.
- * @param {eslint-scope.Variable} variable A variable to check.
- * @param {eslint-scope.Reference} reference A reference to check.
- * @returns {boolean} `true` if the variable is a variable declaration.
+ * Checks whether a given scope is the scope of a class static initializer.
+ * Static initializers are static blocks and initializers of static fields.
+ * @param {eslint-scope.Scope} scope A scope to check.
+ * @returns {boolean} `true` if the scope is a class static initializer scope.
  */
-function isOuterVariable(variable, reference) {
-    return (
-        variable.defs[0].type === "Variable" &&
-        variable.scope.variableScope !== reference.from.variableScope
-    );
+function isClassStaticInitializerScope(scope) {
+    if (scope.type === "class-static-block") {
+        return true;
+    }
+
+    if (scope.type === "class-field-initializer") {
+
+        // `scope.block` is PropertyDefinition#value node
+        const propertyDefinition = scope.block.parent;
+
+        return propertyDefinition.static;
+    }
+
+    return false;
 }
 
 /**
- * Checks whether or not a given location is inside of the range of a given node.
- * @param {ASTNode} node An node to check.
- * @param {number} location A location to check.
- * @returns {boolean} `true` if the location is inside of the range of the node.
+ * Checks whether a given reference is evaluated in an execution context
+ * that isn't the one where the variable it refers to is defined.
+ * Execution contexts are:
+ * - top-level
+ * - functions
+ * - class field initializers (implicit functions)
+ * - class static blocks (implicit functions)
+ * Static class field initializers and class static blocks are automatically run during the class definition evaluation,
+ * and therefore we'll consider them as a part of the parent execution context.
+ * Example:
+ *
+ *   const x = 1;
+ *
+ *   x; // returns `false`
+ *   () => x; // returns `true`
+ *
+ *   class C {
+ *       field = x; // returns `true`
+ *       static field = x; // returns `false`
+ *
+ *       method() {
+ *           x; // returns `true`
+ *       }
+ *
+ *       static method() {
+ *           x; // returns `true`
+ *       }
+ *
+ *       static {
+ *           x; // returns `false`
+ *       }
+ *   }
+ * @param {eslint-scope.Reference} reference A reference to check.
+ * @returns {boolean} `true` if the reference is from a separate execution context.
  */
-function isInRange(node, location) {
-    return node && node.range[0] <= location && location <= node.range[1];
+function isFromSeparateExecutionContext(reference) {
+    const variable = reference.resolved;
+    let scope = reference.from;
+
+    // Scope#variableScope represents execution context
+    while (variable.scope.variableScope !== scope.variableScope) {
+        if (isClassStaticInitializerScope(scope.variableScope)) {
+            scope = scope.variableScope.upper;
+        } else {
+            return true;
+        }
+    }
+
+    return false;
 }
 
 /**
- * Checks whether or not a given reference is inside of the initializers of a given variable.
+ * Checks whether or not a given reference is evaluated during the initialization of its variable.
  *
@@ -93,14 +156,42 @@ * This returns `true` in the following cases:
  *     for (var a of a) {}
- * @param {Variable} variable A variable to check.
+ *     var C = class { [C]; };
+ *     var C = class { static foo = C; };
+ *     var C = class { static { foo = C; } };
+ *     class C extends C {}
+ *     class C extends (class { static foo = C; }) {}
+ *     class C { [C]; }
  * @param {Reference} reference A reference to check.
- * @returns {boolean} `true` if the reference is inside of the initializers.
+ * @returns {boolean} `true` if the reference is evaluated during the initialization.
  */
-function isInInitializer(variable, reference) {
-    if (variable.scope !== reference.from) {
+function isEvaluatedDuringInitialization(reference) {
+    if (isFromSeparateExecutionContext(reference)) {
+
+        /*
+         * Even if the reference appears in the initializer, it isn't evaluated during the initialization.
+         * For example, `const x = () => x;` is valid.
+         */
         return false;
     }
 
-    let node = variable.identifiers[0].parent;
     const location = reference.identifier.range[1];
+    const definition = reference.resolved.defs[0];
 
+    if (definition.type === "ClassName") {
+
+        // `ClassDeclaration` or `ClassExpression`
+        const classDefinition = definition.node;
+
+        return (
+            isInRange(classDefinition, location) &&
+
+            /*
+             * Class binding is initialized before running static initializers.
+             * For example, `class C { static foo = C; static { bar = C; } }` is valid.
+             */
+            !isInClassStaticInitializerRange(classDefinition.body, location)
+        );
+    }
+
+    let node = definition.name.parent;
+
     while (node) {
@@ -135,2 +226,3 @@ if (node.type === "VariableDeclarator") {
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -141,6 +233,5 @@ meta: {
         docs: {
-            description: "disallow the use of variables before they are defined",
-            category: "Variables",
+            description: "Disallow the use of variables before they are defined",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-use-before-define"
+            url: "https://eslint.org/docs/latest/rules/no-use-before-define"
         },
@@ -159,3 +250,4 @@
                             classes: { type: "boolean" },
-                            variables: { type: "boolean" }
+                            variables: { type: "boolean" },
+                            allowNamedExports: { type: "boolean" }
                         },
@@ -175,19 +267,55 @@ additionalProperties: false
         const options = parseOptions(context.options[0]);
+        const sourceCode = context.sourceCode;
 
         /**
-         * Determines whether a given use-before-define case should be reported according to the options.
-         * @param {eslint-scope.Variable} variable The variable that gets used before being defined
-         * @param {eslint-scope.Reference} reference The reference to the variable
-         * @returns {boolean} `true` if the usage should be reported
+         * Determines whether a given reference should be checked.
+         *
+         * Returns `false` if the reference is:
+         * - initialization's (e.g., `let a = 1`).
+         * - referring to an undefined variable (i.e., if it's an unresolved reference).
+         * - referring to a variable that is defined, but not in the given source code
+         *   (e.g., global environment variable or `arguments` in functions).
+         * - allowed by options.
+         * @param {eslint-scope.Reference} reference The reference
+         * @returns {boolean} `true` if the reference should be checked
          */
-        function isForbidden(variable, reference) {
-            if (isFunction(variable)) {
-                return options.functions;
+        function shouldCheck(reference) {
+            if (reference.init) {
+                return false;
             }
-            if (isOuterClass(variable, reference)) {
-                return options.classes;
+
+            const { identifier } = reference;
+
+            if (
+                options.allowNamedExports &&
+                identifier.parent.type === "ExportSpecifier" &&
+                identifier.parent.local === identifier
+            ) {
+                return false;
             }
-            if (isOuterVariable(variable, reference)) {
-                return options.variables;
+
+            const variable = reference.resolved;
+
+            if (!variable || variable.defs.length === 0) {
+                return false;
             }
+
+            const definitionType = variable.defs[0].type;
+
+            if (!options.functions && definitionType === "FunctionName") {
+                return false;
+            }
+
+            if (
+                (
+                    !options.variables && definitionType === "Variable" ||
+                    !options.classes && definitionType === "ClassName"
+                ) &&
+
+                // don't skip checking the reference if it's in the same execution context, because of TDZ
+                isFromSeparateExecutionContext(reference)
+            ) {
+                return false;
+            }
+
             return true;
@@ -197,42 +325,29 @@ }
         /**
-         * Finds and validates all variables in a given scope.
-         * @param {Scope} scope The scope object.
+         * Finds and validates all references in a given scope and its child scopes.
+         * @param {eslint-scope.Scope} scope The scope object.
          * @returns {void}
-         * @private
          */
-        function findVariablesInScope(scope) {
-            scope.references.forEach(reference => {
+        function checkReferencesInScope(scope) {
+            scope.references.filter(shouldCheck).forEach(reference => {
                 const variable = reference.resolved;
+                const definitionIdentifier = variable.defs[0].name;
 
-                /*
-                 * Skips when the reference is:
-                 * - initialization's.
-                 * - referring to an undefined variable.
-                 * - referring to a global environment variable (there're no identifiers).
-                 * - located preceded by the variable (except in initializers).
-                 * - allowed by options.
-                 */
-                if (reference.init ||
-                    !variable ||
-                    variable.identifiers.length === 0 ||
-                    (variable.identifiers[0].range[1] < reference.identifier.range[1] && !isInInitializer(variable, reference)) ||
-                    !isForbidden(variable, reference)
+                if (
+                    reference.identifier.range[1] < definitionIdentifier.range[1] ||
+                    isEvaluatedDuringInitialization(reference)
                 ) {
-                    return;
+                    context.report({
+                        node: reference.identifier,
+                        messageId: "usedBeforeDefined",
+                        data: reference.identifier
+                    });
                 }
-
-                // Reports.
-                context.report({
-                    node: reference.identifier,
-                    messageId: "usedBeforeDefined",
-                    data: reference.identifier
-                });
             });
 
-            scope.childScopes.forEach(findVariablesInScope);
+            scope.childScopes.forEach(checkReferencesInScope);
         }
 
         return {
-            Program() {
-                findVariablesInScope(context.getScope());
+            Program(node) {
+                checkReferencesInScope(sourceCode.getScope(node));
             }
@@ -239,0 +354,0 @@ };

lib/rules/no-useless-backreference.js

@@ -12,5 +12,4 @@ /**
 
-const { CALL, CONSTRUCT, ReferenceTracker, getStringIfConstant } = require("eslint-utils");
-const { RegExpParser, visitRegExpAST } = require("regexpp");
-const lodash = require("lodash");
+const { CALL, CONSTRUCT, ReferenceTracker, getStringIfConstant } = require("@eslint-community/eslint-utils");
+const { RegExpParser, visitRegExpAST } = require("@eslint-community/regexpp");
 
@@ -63,2 +62,3 @@ //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -69,6 +69,5 @@ meta: {
         docs: {
-            description: "disallow useless backreferences in regular expressions",
-            category: "Possible Errors",
-            recommended: false,
-            url: "https://eslint.org/docs/rules/no-useless-backreference"
+            description: "Disallow useless backreferences in regular expressions",
+            recommended: true,
+            url: "https://eslint.org/docs/latest/rules/no-useless-backreference"
         },
@@ -89,2 +88,4 @@
 
+        const sourceCode = context.sourceCode;
+
         /**
@@ -101,3 +102,3 @@ * Checks and reports useless backreferences in the given regular expression.
             try {
-                regExpAST = parser.parsePattern(pattern, 0, pattern.length, flags.includes("u"));
+                regExpAST = parser.parsePattern(pattern, 0, pattern.length, { unicode: flags.includes("u"), unicodeSets: flags.includes("v") });
             } catch {
@@ -145,3 +146,3 @@
                             messageId = "backward";
-                        } else if (lodash.last(groupCut).type === "Alternative") {
+                        } else if (groupCut[groupCut.length - 1].type === "Alternative") {
 
@@ -177,4 +178,4 @@ // group's and bref's ancestor nodes below the lowest common ancestor are sibling alternatives => they're disjunctive.
             },
-            Program() {
-                const scope = context.getScope(),
+            Program(node) {
+                const scope = sourceCode.getScope(node),
                     tracker = new ReferenceTracker(scope),
@@ -188,4 +189,4 @@ traceMap = {
 
-                for (const { node } of tracker.iterateGlobalReferences(traceMap)) {
-                    const [patternNode, flagsNode] = node.arguments,
+                for (const { node: refNode } of tracker.iterateGlobalReferences(traceMap)) {
+                    const [patternNode, flagsNode] = refNode.arguments,
                         pattern = getStringIfConstant(patternNode, scope),
@@ -195,3 +196,3 @@ flags = getStringIfConstant(flagsNode, scope);
                     if (typeof pattern === "string") {
-                        checkRegex(node, pattern, flags || "");
+                        checkRegex(refNode, pattern, flags || "");
                     }
@@ -198,0 +199,0 @@ }

lib/rules/no-useless-call.js

@@ -52,2 +52,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -58,6 +59,5 @@ meta: {
         docs: {
-            description: "disallow unnecessary calls to `.call()` and `.apply()`",
-            category: "Best Practices",
+            description: "Disallow unnecessary calls to `.call()` and `.apply()`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-useless-call"
+            url: "https://eslint.org/docs/latest/rules/no-useless-call"
         },
@@ -73,3 +73,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -76,0 +76,0 @@ return {

lib/rules/no-useless-catch.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow unnecessary `catch` clauses",
-            category: "Best Practices",
+            description: "Disallow unnecessary `catch` clauses",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-useless-catch"
+            url: "https://eslint.org/docs/latest/rules/no-useless-catch"
         },
@@ -24,0 +24,0 @@

lib/rules/no-useless-computed-key.js

@@ -11,9 +11,80 @@ /**
 
-const lodash = require("lodash");
 const astUtils = require("./utils/ast-utils");
 
 //------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+/**
+ * Determines whether the computed key syntax is unnecessarily used for the given node.
+ * In particular, it determines whether removing the square brackets and using the content between them
+ * directly as the key (e.g. ['foo'] -> 'foo') would produce valid syntax and preserve the same behavior.
+ * Valid non-computed keys are only: identifiers, number literals and string literals.
+ * Only literals can preserve the same behavior, with a few exceptions for specific node types:
+ * Property
+ *   - { ["__proto__"]: foo } defines a property named "__proto__"
+ *     { "__proto__": foo } defines object's prototype
+ * PropertyDefinition
+ *   - class C { ["constructor"]; } defines an instance field named "constructor"
+ *     class C { "constructor"; } produces a parsing error
+ *   - class C { static ["constructor"]; } defines a static field named "constructor"
+ *     class C { static "constructor"; } produces a parsing error
+ *   - class C { static ["prototype"]; } produces a runtime error (doesn't break the whole script)
+ *     class C { static "prototype"; } produces a parsing error (breaks the whole script)
+ * MethodDefinition
+ *   - class C { ["constructor"]() {} } defines a prototype method named "constructor"
+ *     class C { "constructor"() {} } defines the constructor
+ *   - class C { static ["prototype"]() {} } produces a runtime error (doesn't break the whole script)
+ *     class C { static "prototype"() {} } produces a parsing error (breaks the whole script)
+ * @param {ASTNode} node The node to check. It can be `Property`, `PropertyDefinition` or `MethodDefinition`.
+ * @throws {Error} (Unreachable.)
+ * @returns {void} `true` if the node has useless computed key.
+ */
+function hasUselessComputedKey(node) {
+    if (!node.computed) {
+        return false;
+    }
+
+    const { key } = node;
+
+    if (key.type !== "Literal") {
+        return false;
+    }
+
+    const { value } = key;
+
+    if (typeof value !== "number" && typeof value !== "string") {
+        return false;
+    }
+
+    switch (node.type) {
+        case "Property":
+            return value !== "__proto__";
+
+        case "PropertyDefinition":
+            if (node.static) {
+                return value !== "constructor" && value !== "prototype";
+            }
+
+            return value !== "constructor";
+
+        case "MethodDefinition":
+            if (node.static) {
+                return value !== "prototype";
+            }
+
+            return value !== "constructor";
+
+        /* c8 ignore next */
+        default:
+            throw new Error(`Unexpected node type: ${node.type}`);
+    }
+
+}
+
+//------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +95,5 @@ meta: {
         docs: {
-            description: "disallow unnecessary computed property keys in objects and classes",
-            category: "ECMAScript 6",
+            description: "Disallow unnecessary computed property keys in objects and classes",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-useless-computed-key"
+            url: "https://eslint.org/docs/latest/rules/no-useless-computed-key"
         },
@@ -48,3 +118,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const enforceForClassMembers = context.options[0] && context.options[0].enforceForClassMembers;
@@ -58,18 +128,5 @@
         function check(node) {
-            if (!node.computed) {
-                return;
-            }
+            if (hasUselessComputedKey(node)) {
+                const { key } = node;
 
-            const key = node.key,
-                nodeType = typeof key.value;
-
-            let allowedKey;
-
-            if (node.type === "MethodDefinition") {
-                allowedKey = node.static ? "prototype" : "constructor";
-            } else {
-                allowedKey = "__proto__";
-            }
-
-            if (key.type === "Literal" && (nodeType === "string" || nodeType === "number") && key.value !== allowedKey) {
                 context.report({
@@ -102,7 +159,15 @@ node,
 
+        /**
+         * A no-op function to act as placeholder for checking a node when the `enforceForClassMembers` option is `false`.
+         * @returns {void}
+         * @private
+         */
+        function noop() {}
+
         return {
             Property: check,
-            MethodDefinition: enforceForClassMembers ? check : lodash.noop
+            MethodDefinition: enforceForClassMembers ? check : noop,
+            PropertyDefinition: enforceForClassMembers ? check : noop
         };
     }
 };

lib/rules/no-useless-concat.js

@@ -67,2 +67,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -73,6 +74,5 @@ meta: {
         docs: {
-            description: "disallow unnecessary concatenation of literals or template literals",
-            category: "Best Practices",
+            description: "Disallow unnecessary concatenation of literals or template literals",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-useless-concat"
+            url: "https://eslint.org/docs/latest/rules/no-useless-concat"
         },
@@ -88,3 +88,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -91,0 +91,0 @@ return {

lib/rules/no-useless-constructor.js

@@ -135,2 +135,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -141,6 +142,5 @@ meta: {
         docs: {
-            description: "disallow unnecessary constructors",
-            category: "ECMAScript 6",
+            description: "Disallow unnecessary constructors",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-useless-constructor"
+            url: "https://eslint.org/docs/latest/rules/no-useless-constructor"
         },
@@ -147,0 +147,0 @@

lib/rules/no-useless-escape.js

@@ -9,3 +9,8 @@ /**
 const astUtils = require("./utils/ast-utils");
+const { RegExpParser, visitRegExpAST } = require("@eslint-community/regexpp");
 
+/**
+ * @typedef {import('@eslint-community/regexpp').AST.CharacterClass} CharacterClass
+ * @typedef {import('@eslint-community/regexpp').AST.ExpressionCharacterClass} ExpressionCharacterClass
+ */
 //------------------------------------------------------------------------------
@@ -32,51 +37,15 @@ // Rule Definition
 
-/**
- * Parses a regular expression into a list of characters with character class info.
- * @param {string} regExpText The raw text used to create the regular expression
- * @returns {Object[]} A list of characters, each with info on escaping and whether they're in a character class.
- * @example
- *
- * parseRegExp('a\\b[cd-]')
- *
- * returns:
- * [
- *   {text: 'a', index: 0, escaped: false, inCharClass: false, startsCharClass: false, endsCharClass: false},
- *   {text: 'b', index: 2, escaped: true, inCharClass: false, startsCharClass: false, endsCharClass: false},
- *   {text: 'c', index: 4, escaped: false, inCharClass: true, startsCharClass: true, endsCharClass: false},
- *   {text: 'd', index: 5, escaped: false, inCharClass: true, startsCharClass: false, endsCharClass: false},
- *   {text: '-', index: 6, escaped: false, inCharClass: true, startsCharClass: false, endsCharClass: false}
- * ]
+/*
+ * Set of characters that require escaping in character classes in `unicodeSets` mode.
+ * ( ) [ ] { } / - \ | are ClassSetSyntaxCharacter
  */
-function parseRegExp(regExpText) {
-    const charList = [];
+const REGEX_CLASSSET_CHARACTER_ESCAPES = union(REGEX_GENERAL_ESCAPES, new Set("q/[{}|()-"));
 
-    regExpText.split("").reduce((state, char, index) => {
-        if (!state.escapeNextChar) {
-            if (char === "\\") {
-                return Object.assign(state, { escapeNextChar: true });
-            }
-            if (char === "[" && !state.inCharClass) {
-                return Object.assign(state, { inCharClass: true, startingCharClass: true });
-            }
-            if (char === "]" && state.inCharClass) {
-                if (charList.length && charList[charList.length - 1].inCharClass) {
-                    charList[charList.length - 1].endsCharClass = true;
-                }
-                return Object.assign(state, { inCharClass: false, startingCharClass: false });
-            }
-        }
-        charList.push({
-            text: char,
-            index,
-            escaped: state.escapeNextChar,
-            inCharClass: state.inCharClass,
-            startsCharClass: state.startingCharClass,
-            endsCharClass: false
-        });
-        return Object.assign(state, { escapeNextChar: false, startingCharClass: false });
-    }, { escapeNextChar: false, inCharClass: false, startingCharClass: false });
+/*
+ * A single character set of ClassSetReservedDoublePunctuator.
+ * && !! ## $$ %% ** ++ ,, .. :: ;; << == >> ?? @@ ^^ `` ~~ are ClassSetReservedDoublePunctuator
+ */
+const REGEX_CLASS_SET_RESERVED_DOUBLE_PUNCTUATOR = new Set("!#$%&*+,.:;<=>?@^`~");
 
-    return charList;
-}
-
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -87,12 +56,13 @@ meta: {
         docs: {
-            description: "disallow unnecessary escape characters",
-            category: "Best Practices",
+            description: "Disallow unnecessary escape characters",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-useless-escape",
-            suggestion: true
+            url: "https://eslint.org/docs/latest/rules/no-useless-escape"
         },
 
+        hasSuggestions: true,
+
         messages: {
             unnecessaryEscape: "Unnecessary escape character: \\{{character}}.",
             removeEscape: "Remove the `\\`. This maintains the current functionality.",
+            removeEscapeDoNotKeepSemantics: "Remove the `\\` if it was inserted by mistake.",
             escapeBackslash: "Replace the `\\` with `\\\\` to include the actual backslash character."
@@ -105,3 +75,4 @@ },
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
+        const parser = new RegExpParser();
 
@@ -113,5 +84,6 @@ /**
          * @param {string} character The uselessly escaped character (not including the backslash)
+         * @param {boolean} [disableEscapeBackslashSuggest] `true` if escapeBackslash suggestion should be turned off.
          * @returns {void}
          */
-        function report(node, startOffset, character) {
+        function report(node, startOffset, character, disableEscapeBackslashSuggest) {
             const rangeStart = node.range[0] + startOffset;
@@ -131,3 +103,6 @@ const range = [rangeStart, rangeStart + 1];
                     {
-                        messageId: "removeEscape",
+
+                        // Removing unnecessary `\` characters in a directive is not guaranteed to maintain functionality.
+                        messageId: astUtils.isDirective(node.parent)
+                            ? "removeEscapeDoNotKeepSemantics" : "removeEscape",
                         fix(fixer) {
@@ -137,8 +112,12 @@ return fixer.removeRange(range);
                     },
-                    {
-                        messageId: "escapeBackslash",
-                        fix(fixer) {
-                            return fixer.insertTextBeforeRange(range, "\\");
-                        }
-                    }
+                    ...disableEscapeBackslashSuggest
+                        ? []
+                        : [
+                            {
+                                messageId: "escapeBackslash",
+                                fix(fixer) {
+                                    return fixer.insertTextBeforeRange(range, "\\");
+                                }
+                            }
+                        ]
                 ]
@@ -187,2 +166,129 @@ });
         /**
+         * Checks if the escape character in given regexp is unnecessary.
+         * @private
+         * @param {ASTNode} node node to validate.
+         * @returns {void}
+         */
+        function validateRegExp(node) {
+            const { pattern, flags } = node.regex;
+            let patternNode;
+            const unicode = flags.includes("u");
+            const unicodeSets = flags.includes("v");
+
+            try {
+                patternNode = parser.parsePattern(pattern, 0, pattern.length, { unicode, unicodeSets });
+            } catch {
+
+                // Ignore regular expressions with syntax errors
+                return;
+            }
+
+            /** @type {(CharacterClass | ExpressionCharacterClass)[]} */
+            const characterClassStack = [];
+
+            visitRegExpAST(patternNode, {
+                onCharacterClassEnter: characterClassNode => characterClassStack.unshift(characterClassNode),
+                onCharacterClassLeave: () => characterClassStack.shift(),
+                onExpressionCharacterClassEnter: characterClassNode => characterClassStack.unshift(characterClassNode),
+                onExpressionCharacterClassLeave: () => characterClassStack.shift(),
+                onCharacterEnter(characterNode) {
+                    if (!characterNode.raw.startsWith("\\")) {
+
+                        // It's not an escaped character.
+                        return;
+                    }
+
+                    const escapedChar = characterNode.raw.slice(1);
+
+                    if (escapedChar !== String.fromCodePoint(characterNode.value)) {
+
+                        // It's a valid escape.
+                        return;
+                    }
+                    let allowedEscapes;
+
+                    if (characterClassStack.length) {
+                        allowedEscapes = unicodeSets ? REGEX_CLASSSET_CHARACTER_ESCAPES : REGEX_GENERAL_ESCAPES;
+                    } else {
+                        allowedEscapes = REGEX_NON_CHARCLASS_ESCAPES;
+                    }
+                    if (allowedEscapes.has(escapedChar)) {
+                        return;
+                    }
+
+                    const reportedIndex = characterNode.start + 1;
+                    let disableEscapeBackslashSuggest = false;
+
+                    if (characterClassStack.length) {
+                        const characterClassNode = characterClassStack[0];
+
+                        if (escapedChar === "^") {
+
+                            /*
+                             * The '^' character is also a special case; it must always be escaped outside of character classes, but
+                             * it only needs to be escaped in character classes if it's at the beginning of the character class. To
+                             * account for this, consider it to be a valid escape character outside of character classes, and filter
+                             * out '^' characters that appear at the start of a character class.
+                             */
+                            if (characterClassNode.start + 1 === characterNode.start) {
+
+                                return;
+                            }
+                        }
+                        if (!unicodeSets) {
+                            if (escapedChar === "-") {
+
+                                /*
+                                 * The '-' character is a special case, because it's only valid to escape it if it's in a character
+                                 * class, and is not at either edge of the character class. To account for this, don't consider '-'
+                                 * characters to be valid in general, and filter out '-' characters that appear in the middle of a
+                                 * character class.
+                                 */
+                                if (characterClassNode.start + 1 !== characterNode.start && characterNode.end !== characterClassNode.end - 1) {
+
+                                    return;
+                                }
+                            }
+                        } else { // unicodeSets mode
+                            if (REGEX_CLASS_SET_RESERVED_DOUBLE_PUNCTUATOR.has(escapedChar)) {
+
+                                // Escaping is valid if it is a ClassSetReservedDoublePunctuator.
+                                if (pattern[characterNode.end] === escapedChar) {
+                                    return;
+                                }
+                                if (pattern[characterNode.start - 1] === escapedChar) {
+                                    if (escapedChar !== "^") {
+                                        return;
+                                    }
+
+                                    // If the previous character is a `negate` caret(`^`), escape to caret is unnecessary.
+
+                                    if (!characterClassNode.negate) {
+                                        return;
+                                    }
+                                    const negateCaretIndex = characterClassNode.start + 1;
+
+                                    if (negateCaretIndex < characterNode.start - 1) {
+                                        return;
+                                    }
+                                }
+                            }
+
+                            if (characterNode.parent.type === "ClassIntersection" || characterNode.parent.type === "ClassSubtraction") {
+                                disableEscapeBackslashSuggest = true;
+                            }
+                        }
+                    }
+
+                    report(
+                        node,
+                        reportedIndex,
+                        escapedChar,
+                        disableEscapeBackslashSuggest
+                    );
+                }
+            });
+        }
+
+        /**
          * Checks if a node has an escape.
@@ -225,28 +331,3 @@ * @param {ASTNode} node node to check.
             } else if (node.regex) {
-                parseRegExp(node.regex.pattern)
-
-                    /*
-                     * The '-' character is a special case, because it's only valid to escape it if it's in a character
-                     * class, and is not at either edge of the character class. To account for this, don't consider '-'
-                     * characters to be valid in general, and filter out '-' characters that appear in the middle of a
-                     * character class.
-                     */
-                    .filter(charInfo => !(charInfo.text === "-" && charInfo.inCharClass && !charInfo.startsCharClass && !charInfo.endsCharClass))
-
-                    /*
-                     * The '^' character is also a special case; it must always be escaped outside of character classes, but
-                     * it only needs to be escaped in character classes if it's at the beginning of the character class. To
-                     * account for this, consider it to be a valid escape character outside of character classes, and filter
-                     * out '^' characters that appear at the start of a character class.
-                     */
-                    .filter(charInfo => !(charInfo.text === "^" && charInfo.startsCharClass))
-
-                    // Filter out characters that aren't escaped.
-                    .filter(charInfo => charInfo.escaped)
-
-                    // Filter out characters that are valid to escape, based on their position in the regular expression.
-                    .filter(charInfo => !(charInfo.inCharClass ? REGEX_GENERAL_ESCAPES : REGEX_NON_CHARCLASS_ESCAPES).has(charInfo.text))
-
-                    // Report all the remaining characters.
-                    .forEach(charInfo => report(node, charInfo.index, charInfo.text));
+                validateRegExp(node);
             }
@@ -253,0 +334,0 @@

lib/rules/no-useless-rename.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "disallow renaming import, export, and destructured assignments to the same name",
-            category: "ECMAScript 6",
+            description: "Disallow renaming import, export, and destructured assignments to the same name",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-useless-rename"
+            url: "https://eslint.org/docs/latest/rules/no-useless-rename"
         },
@@ -51,3 +51,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode(),
+        const sourceCode = context.sourceCode,
             options = context.options[0] || {},
@@ -138,4 +138,6 @@ ignoreDestructuring = options.ignoreDestructuring === true,
 
-            if (node.imported.name === node.local.name &&
-                    node.imported.range[0] !== node.local.range[0]) {
+            if (
+                node.imported.range[0] !== node.local.range[0] &&
+                astUtils.getModuleExportName(node.imported) === node.local.name
+            ) {
                 reportError(node, node.imported, "Import");
@@ -155,4 +157,6 @@ }
 
-            if (node.local.name === node.exported.name &&
-                    node.local.range[0] !== node.exported.range[0]) {
+            if (
+                node.local.range[0] !== node.exported.range[0] &&
+                astUtils.getModuleExportName(node.local) === astUtils.getModuleExportName(node.exported)
+            ) {
                 reportError(node, node.local, "Export");
@@ -159,0 +163,0 @@ }

lib/rules/no-useless-return.js

@@ -60,2 +60,18 @@ /**
 
+/**
+ * Checks all segments in a set and returns true if any are reachable.
+ * @param {Set<CodePathSegment>} segments The segments to check.
+ * @returns {boolean} True if any segment is reachable; false otherwise.
+ */
+function isAnySegmentReachable(segments) {
+
+    for (const segment of segments) {
+        if (segment.reachable) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
 //------------------------------------------------------------------------------
@@ -65,2 +81,3 @@ // Rule Definition
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -71,6 +88,5 @@ meta: {
         docs: {
-            description: "disallow redundant return statements",
-            category: "Best Practices",
+            description: "Disallow redundant return statements",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-useless-return"
+            url: "https://eslint.org/docs/latest/rules/no-useless-return"
         },
@@ -88,4 +104,3 @@
         const segmentInfoMap = new WeakMap();
-        const usedUnreachableSegments = new WeakSet();
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         let scopeInfo = null;
@@ -159,5 +174,6 @@
          * @param {CodePathSegment} segment The segment to get return statements.
+         * @param {Set<CodePathSegment>} usedUnreachableSegments A set of segments that have already been traversed in this call.
          * @returns {void}
          */
-        function markReturnStatementsOnSegmentAsUsed(segment) {
+        function markReturnStatementsOnSegmentAsUsed(segment, usedUnreachableSegments) {
             if (!segment.reachable) {
@@ -168,3 +184,3 @@ usedUnreachableSegments.add(segment);
                     .filter(prevSegment => !usedUnreachableSegments.has(prevSegment))
-                    .forEach(markReturnStatementsOnSegmentAsUsed);
+                    .forEach(prevSegment => markReturnStatementsOnSegmentAsUsed(prevSegment, usedUnreachableSegments));
                 return;
@@ -175,6 +191,25 @@ }
 
-            for (const node of info.uselessReturns) {
+            info.uselessReturns = info.uselessReturns.filter(node => {
+                if (scopeInfo.traversedTryBlockStatements && scopeInfo.traversedTryBlockStatements.length > 0) {
+                    const returnInitialRange = node.range[0];
+                    const returnFinalRange = node.range[1];
+
+                    const areBlocksInRange = scopeInfo.traversedTryBlockStatements.some(tryBlockStatement => {
+                        const blockInitialRange = tryBlockStatement.range[0];
+                        const blockFinalRange = tryBlockStatement.range[1];
+
+                        return (
+                            returnInitialRange >= blockInitialRange &&
+                            returnFinalRange <= blockFinalRange
+                        );
+                    });
+
+                    if (areBlocksInRange) {
+                        return true;
+                    }
+                }
+
                 remove(scopeInfo.uselessReturns, node);
-            }
-            info.uselessReturns = [];
+                return false;
+            });
         }
@@ -196,5 +231,4 @@
             scopeInfo
-                .codePath
                 .currentSegments
-                .forEach(markReturnStatementsOnSegmentAsUsed);
+                .forEach(segment => markReturnStatementsOnSegmentAsUsed(segment, new Set()));
         }
@@ -208,3 +242,3 @@
 
-            // Makes and pushs a new scope information.
+            // Makes and pushes a new scope information.
             onCodePathStart(codePath) {
@@ -214,3 +248,5 @@ scopeInfo = {
                     uselessReturns: [],
-                    codePath
+                    traversedTryBlockStatements: [],
+                    codePath,
+                    currentSegments: new Set()
                 };
@@ -252,2 +288,5 @@ },
             onCodePathSegmentStart(segment) {
+
+                scopeInfo.currentSegments.add(segment);
+
                 const info = {
@@ -262,2 +301,14 @@ uselessReturns: getUselessReturns([], segment.allPrevSegments),
 
+            onUnreachableCodePathSegmentStart(segment) {
+                scopeInfo.currentSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                scopeInfo.currentSegments.delete(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                scopeInfo.currentSegments.delete(segment);
+            },
+
             // Adds ReturnStatement node to check whether it's useless or not.
@@ -274,3 +325,3 @@ ReturnStatement(node) {
                     // Ignore `return` statements in unreachable places (https://github.com/eslint/eslint/issues/11647).
-                    !scopeInfo.codePath.currentSegments.some(s => s.reachable)
+                    !isAnySegmentReachable(scopeInfo.currentSegments)
                 ) {
@@ -280,3 +331,3 @@ return;
 
-                for (const segment of scopeInfo.codePath.currentSegments) {
+                for (const segment of scopeInfo.currentSegments) {
                     const info = segmentInfoMap.get(segment);
@@ -292,2 +343,10 @@
 
+            "TryStatement > BlockStatement.block:exit"(node) {
+                scopeInfo.traversedTryBlockStatements.push(node);
+            },
+
+            "TryStatement:exit"() {
+                scopeInfo.traversedTryBlockStatements.pop();
+            },
+
             /*
@@ -294,0 +353,0 @@ * Registers for all statement nodes except FunctionDeclaration, BlockStatement, BreakStatement.

lib/rules/no-var.js

@@ -93,3 +93,3 @@ /**
 
-    /* istanbul ignore next : unreachable */
+    /* c8 ignore next */
     return null;
@@ -163,3 +163,3 @@ }
                 (defaultValue !== null && start >= defaultStart && end <= defaultEnd) ||
-                (start >= initStart && end <= initEnd)
+                (!astUtils.isFunction(node) && start >= initStart && end <= initEnd)
             );
@@ -184,2 +184,3 @@ });
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -190,6 +191,5 @@ meta: {
         docs: {
-            description: "require `let` or `const` instead of `var`",
-            category: "ECMAScript 6",
+            description: "Require `let` or `const` instead of `var`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-var"
+            url: "https://eslint.org/docs/latest/rules/no-var"
         },
@@ -206,3 +206,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -218,3 +218,3 @@ /**
             }
-            const variables = context.getDeclaredVariables(declarator);
+            const variables = sourceCode.getDeclaredVariables(declarator);
 
@@ -277,3 +277,3 @@ return variables.some(hasReferenceInTDZ(declarator.init));
         function canFix(node) {
-            const variables = context.getDeclaredVariables(node);
+            const variables = sourceCode.getDeclaredVariables(node);
             const scopeNode = getScopeNode(node);
@@ -280,0 +280,0 @@

lib/rules/no-void.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "disallow `void` operators",
-            category: "Best Practices",
+            description: "Disallow `void` operators",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-void"
+            url: "https://eslint.org/docs/latest/rules/no-void"
         },
@@ -23,0 +23,0 @@

lib/rules/no-warning-comments.js

@@ -8,3 +8,3 @@ /**
 
-const { escapeRegExp } = require("lodash");
+const escapeRegExp = require("escape-string-regexp");
 const astUtils = require("./utils/ast-utils");
@@ -18,2 +18,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "disallow specified warning terms in comments",
-            category: "Best Practices",
+            description: "Disallow specified warning terms in comments",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-warning-comments"
+            url: "https://eslint.org/docs/latest/rules/no-warning-comments"
         },
@@ -43,2 +43,11 @@
                         enum: ["start", "anywhere"]
+                    },
+                    decoration: {
+                        type: "array",
+                        items: {
+                            type: "string",
+                            pattern: "^\\S$"
+                        },
+                        minItems: 1,
+                        uniqueItems: true
                     }
@@ -56,6 +65,7 @@ },
     create(context) {
-        const sourceCode = context.getSourceCode(),
+        const sourceCode = context.sourceCode,
             configuration = context.options[0] || {},
             warningTerms = configuration.terms || ["todo", "fixme", "xxx"],
             location = configuration.location || "start",
+            decoration = [...configuration.decoration || []].join(""),
             selfConfigRegEx = /\bno-warning-comments\b/u;
@@ -72,55 +82,50 @@
             const escaped = escapeRegExp(term);
-            const wordBoundary = "\\b";
-            const eitherOrWordBoundary = `|${wordBoundary}`;
-            let prefix;
+            const escapedDecoration = escapeRegExp(decoration);
 
             /*
-             * If the term ends in a word character (a-z0-9_), ensure a word
-             * boundary at the end, so that substrings do not get falsely
-             * matched. eg "todo" in a string such as "mastodon".
-             * If the term ends in a non-word character, then \b won't match on
-             * the boundary to the next non-word character, which would likely
-             * be a space. For example `/\bFIX!\b/.test('FIX! blah') === false`.
-             * In these cases, use no bounding match. Same applies for the
-             * prefix, handled below.
+             * When matching at the start, ignore leading whitespace, and
+             * there's no need to worry about word boundaries.
+             *
+             * These expressions for the prefix and suffix are designed as follows:
+             * ^   handles any terms at the beginning of a comment.
+             *     e.g. terms ["TODO"] matches `//TODO something`
+             * $   handles any terms at the end of a comment
+             *     e.g. terms ["TODO"] matches `// something TODO`
+             * \b  handles terms preceded/followed by word boundary
+             *     e.g. terms: ["!FIX", "FIX!"] matches `// FIX!something` or `// something!FIX`
+             *          terms: ["FIX"] matches `// FIX!` or `// !FIX`, but not `// fixed or affix`
+             *
+             * For location start:
+             * [\s]* handles optional leading spaces
+             *     e.g. terms ["TODO"] matches `//    TODO something`
+             * [\s\*]* (where "\*" is the escaped string of decoration)
+             *     handles optional leading spaces or decoration characters (for "start" location only)
+             *     e.g. terms ["TODO"] matches `/**** TODO something ... `
              */
-            const suffix = /\w$/u.test(term) ? "\\b" : "";
+            const wordBoundary = "\\b";
 
+            let prefix = "";
+
             if (location === "start") {
-
-                /*
-                 * When matching at the start, ignore leading whitespace, and
-                 * there's no need to worry about word boundaries.
-                 */
-                prefix = "^\\s*";
+                prefix = `^[\\s${escapedDecoration}]*`;
             } else if (/^\w/u.test(term)) {
                 prefix = wordBoundary;
-            } else {
-                prefix = "";
             }
 
-            if (location === "start") {
+            const suffix = /\w$/u.test(term) ? wordBoundary : "";
+            const flags = "iu"; // Case-insensitive with Unicode case folding.
 
-                /*
-                 * For location "start" the regex should be
-                 * ^\s*TERM\b.  This checks the word boundary
-                 * at the beginning of the comment.
-                 */
-                return new RegExp(prefix + escaped + suffix, "iu");
-            }
-
             /*
-             * For location "anywhere" the regex should be
-             * \bTERM\b|\bTERM\b, this checks the entire comment
-             * for the term.
+             * For location "start", the typical regex is:
+             *   /^[\s]*ESCAPED_TERM\b/iu.
+             * Or if decoration characters are specified (e.g. "*"), then any of
+             * those characters may appear in any order at the start:
+             *   /^[\s\*]*ESCAPED_TERM\b/iu.
+             *
+             * For location "anywhere" the typical regex is
+             *   /\bESCAPED_TERM\b/iu
+             *
+             * If it starts or ends with non-word character, the prefix and suffix are empty, respectively.
              */
-            return new RegExp(
-                prefix +
-                    escaped +
-                    suffix +
-                    eitherOrWordBoundary +
-                    term +
-                    wordBoundary,
-                "iu"
-            );
+            return new RegExp(`${prefix}${escaped}${suffix}`, flags);
         }
@@ -127,0 +132,0 @@

lib/rules/no-whitespace-before-property.js

@@ -17,2 +17,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +24,5 @@ meta: {
         docs: {
-            description: "disallow whitespace before properties",
-            category: "Stylistic Issues",
+            description: "Disallow whitespace before properties",
             recommended: false,
-            url: "https://eslint.org/docs/rules/no-whitespace-before-property"
+            url: "https://eslint.org/docs/latest/rules/no-whitespace-before-property"
         },
@@ -39,3 +39,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -42,0 +42,0 @@ //--------------------------------------------------------------------------

lib/rules/no-with.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "disallow `with` statements",
-            category: "Best Practices",
+            description: "Disallow `with` statements",
             recommended: true,
-            url: "https://eslint.org/docs/rules/no-with"
+            url: "https://eslint.org/docs/latest/rules/no-with"
         },
@@ -24,0 +24,0 @@

lib/rules/nonblock-statement-body-position.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "enforce the location of single-line statements",
-            category: "Stylistic Issues",
+            description: "Enforce the location of single-line statements",
             recommended: false,
-            url: "https://eslint.org/docs/rules/nonblock-statement-body-position"
+            url: "https://eslint.org/docs/latest/rules/nonblock-statement-body-position"
         },
@@ -54,3 +54,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -57,0 +57,0 @@ //----------------------------------------------------------------------

lib/rules/object-curly-newline.js

@@ -13,3 +13,2 @@ /**
 const astUtils = require("./utils/ast-utils");
-const lodash = require("lodash");
 
@@ -74,2 +73,20 @@ //------------------------------------------------------------------------------
 /**
+ * Checks if a value is an object.
+ * @param {any} value The value to check
+ * @returns {boolean} `true` if the value is an object, otherwise `false`
+ */
+function isObject(value) {
+    return typeof value === "object" && value !== null;
+}
+
+/**
+ * Checks if an option is a node-specific option
+ * @param {any} option The option to check
+ * @returns {boolean} `true` if the option is node-specific, otherwise `false`
+ */
+function isNodeSpecificOption(option) {
+    return isObject(option) || typeof option === "string";
+}
+
+/**
  * Normalizes a given option value.
@@ -85,5 +102,3 @@ * @param {string|Object|undefined} options An option value to parse.
 function normalizeOptions(options) {
-    const isNodeSpecificOption = lodash.overSome([lodash.isPlainObject, lodash.isString]);
-
-    if (lodash.isPlainObject(options) && lodash.some(options, isNodeSpecificOption)) {
+    if (isObject(options) && Object.values(options).some(isNodeSpecificOption)) {
         return {
@@ -135,2 +150,3 @@ ObjectExpression: normalizeOptionValue(options.ObjectExpression),
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -141,6 +157,5 @@ meta: {
         docs: {
-            description: "enforce consistent line breaks inside braces",
-            category: "Stylistic Issues",
+            description: "Enforce consistent line breaks after opening and before closing braces",
             recommended: false,
-            url: "https://eslint.org/docs/rules/object-curly-newline"
+            url: "https://eslint.org/docs/latest/rules/object-curly-newline"
         },
@@ -178,3 +193,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const normalizedOptions = normalizeOptions(context.options[0]);
@@ -181,0 +196,0 @@

lib/rules/object-curly-spacing.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "enforce consistent spacing inside braces",
-            category: "Stylistic Issues",
+            description: "Enforce consistent spacing inside braces",
             recommended: false,
-            url: "https://eslint.org/docs/rules/object-curly-spacing"
+            url: "https://eslint.org/docs/latest/rules/object-curly-spacing"
         },
@@ -56,3 +56,3 @@
         const spaced = context.options[0] === "always",
-            sourceCode = context.getSourceCode();
+            sourceCode = context.sourceCode;
 
@@ -87,3 +87,3 @@ /**
         function reportNoBeginningSpace(node, token) {
-            const nextToken = context.getSourceCode().getTokenAfter(token, { includeComments: true });
+            const nextToken = context.sourceCode.getTokenAfter(token, { includeComments: true });
 
@@ -110,3 +110,3 @@ context.report({
         function reportNoEndingSpace(node, token) {
-            const previousToken = context.getSourceCode().getTokenBefore(token, { includeComments: true });
+            const previousToken = context.sourceCode.getTokenBefore(token, { includeComments: true });
 
@@ -113,0 +113,0 @@ context.report({

lib/rules/object-property-newline.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "enforce placing object properties on separate lines",
-            category: "Stylistic Issues",
+            description: "Enforce placing object properties on separate lines",
             recommended: false,
-            url: "https://eslint.org/docs/rules/object-property-newline"
+            url: "https://eslint.org/docs/latest/rules/object-property-newline"
         },
@@ -58,3 +58,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -61,0 +61,0 @@ return {

lib/rules/object-shorthand.js

@@ -25,2 +25,3 @@ /**
 //------------------------------------------------------------------------------
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -31,6 +32,5 @@ meta: {
         docs: {
-            description: "require or disallow method and property shorthand syntax for object literals",
-            category: "ECMAScript 6",
+            description: "Require or disallow method and property shorthand syntax for object literals",
             recommended: false,
-            url: "https://eslint.org/docs/rules/object-shorthand"
+            url: "https://eslint.org/docs/latest/rules/object-shorthand"
         },
@@ -83,2 +83,5 @@
                                 },
+                                methodsIgnorePattern: {
+                                    type: "string"
+                                },
                                 avoidQuotes: {
@@ -121,5 +124,8 @@ type: "boolean"
         const IGNORE_CONSTRUCTORS = PARAMS.ignoreConstructors;
+        const METHODS_IGNORE_PATTERN = PARAMS.methodsIgnorePattern
+            ? new RegExp(PARAMS.methodsIgnorePattern, "u")
+            : null;
         const AVOID_QUOTES = PARAMS.avoidQuotes;
         const AVOID_EXPLICIT_RETURN_ARROWS = !!PARAMS.avoidExplicitReturnArrows;
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -156,3 +162,2 @@ //--------------------------------------------------------------------------
          * @private
-         *
          */
@@ -165,3 +170,3 @@ function canHaveShorthand(property) {
          * Checks whether a node is a string literal.
-         * @param   {ASTNode} node Any AST node.
+         * @param {ASTNode} node Any AST node.
          * @returns {boolean} `true` if it is a string literal.
@@ -178,3 +183,2 @@ */
          * @private
-         *
          */
@@ -192,3 +196,2 @@ function isShorthand(property) {
          * @private
-         *
          */
@@ -210,6 +213,5 @@ function isRedundant(property) {
          * Ensures that an object's properties are consistently shorthand, or not shorthand at all.
-         * @param   {ASTNode} node Property AST node
-         * @param   {boolean} checkRedundancy Whether to check longform redundancy
+         * @param {ASTNode} node Property AST node
+         * @param {boolean} checkRedundancy Whether to check longform redundancy
          * @returns {void}
-         *
          */
@@ -364,7 +366,8 @@ function checkConsistency(node, checkRedundancy) {
          * Also, this marks all `arguments` identifiers so that they can be detected later.
+         * @param {ASTNode} node The node representing the function.
          * @returns {void}
          */
-        function enterFunction() {
+        function enterFunction(node) {
             lexicalScopeStack.unshift(new Set());
-            context.getScope().variables.filter(variable => variable.name === "arguments").forEach(variable => {
+            sourceCode.getScope(node).variables.filter(variable => variable.name === "arguments").forEach(variable => {
                 variable.references.map(ref => ref.identifier).forEach(identifier => argumentsIdentifiers.add(identifier));
@@ -474,2 +477,11 @@ });
                     }
+
+                    if (METHODS_IGNORE_PATTERN) {
+                        const propertyName = astUtils.getStaticPropertyName(node);
+
+                        if (propertyName !== null && METHODS_IGNORE_PATTERN.test(propertyName)) {
+                            return;
+                        }
+                    }
+
                     if (AVOID_QUOTES && isStringLiteral(node.key)) {
@@ -476,0 +488,0 @@ return;

lib/rules/one-var-declaration-per-line.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "require or disallow newlines around variable declarations",
-            category: "Stylistic Issues",
+            description: "Require or disallow newlines around variable declarations",
             recommended: false,
-            url: "https://eslint.org/docs/rules/one-var-declaration-per-line"
+            url: "https://eslint.org/docs/latest/rules/one-var-declaration-per-line"
         },
@@ -23,0 +23,0 @@

lib/rules/one-var.js

@@ -31,2 +31,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -37,6 +38,5 @@ meta: {
         docs: {
-            description: "enforce variables to be declared either together or separately in functions",
-            category: "Stylistic Issues",
+            description: "Enforce variables to be declared either together or separately in functions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/one-var"
+            url: "https://eslint.org/docs/latest/rules/one-var"
         },
@@ -126,3 +126,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -215,3 +215,3 @@ //--------------------------------------------------------------------------
          * Determines the current scope (function or block)
-         * @param  {string} statementType node.kind, one of: "var", "let", or "const"
+         * @param {string} statementType node.kind, one of: "var", "let", or "const"
          * @returns {Object} The scope associated with statementType
@@ -549,2 +549,4 @@ */
             ArrowFunctionExpression: startFunction,
+            StaticBlock: startFunction, // StaticBlock creates a new scope for `var` variables
+
             BlockStatement: startBlock,
@@ -561,6 +563,8 @@ ForStatement: startBlock,
             "BlockStatement:exit": endBlock,
+
             "Program:exit": endFunction,
             "FunctionDeclaration:exit": endFunction,
             "FunctionExpression:exit": endFunction,
-            "ArrowFunctionExpression:exit": endFunction
+            "ArrowFunctionExpression:exit": endFunction,
+            "StaticBlock:exit": endFunction
         };
@@ -567,0 +571,0 @@

lib/rules/operator-assignment.js

@@ -20,8 +20,8 @@ /**
  * shorthand form.
- * @param   {string}  operator Operator to check.
- * @returns {boolean}          True if the operator is commutative and has a
+ * @param {string} operator Operator to check.
+ * @returns {boolean} True if the operator is commutative and has a
  *     shorthand form.
  */
 function isCommutativeOperatorWithShorthand(operator) {
-    return ["*", "&", "^", "|"].indexOf(operator) >= 0;
+    return ["*", "&", "^", "|"].includes(operator);
 }
@@ -32,8 +32,8 @@
  * shorthand form.
- * @param   {string}  operator Operator to check.
- * @returns {boolean}          True if the operator is not commutative and has
+ * @param {string} operator Operator to check.
+ * @returns {boolean} True if the operator is not commutative and has
  *     a shorthand form.
  */
 function isNonCommutativeOperatorWithShorthand(operator) {
-    return ["+", "-", "/", "%", "<<", ">>", ">>>", "**"].indexOf(operator) >= 0;
+    return ["+", "-", "/", "%", "<<", ">>", ">>>", "**"].includes(operator);
 }
@@ -62,2 +62,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -68,6 +69,5 @@ meta: {
         docs: {
-            description: "require or disallow assignment operator shorthand where possible",
-            category: "Stylistic Issues",
+            description: "Require or disallow assignment operator shorthand where possible",
             recommended: false,
-            url: "https://eslint.org/docs/rules/operator-assignment"
+            url: "https://eslint.org/docs/latest/rules/operator-assignment"
         },
@@ -83,4 +83,4 @@
         messages: {
-            replaced: "Assignment can be replaced with operator assignment.",
-            unexpected: "Unexpected operator assignment shorthand."
+            replaced: "Assignment (=) can be replaced with operator assignment ({{operator}}).",
+            unexpected: "Unexpected operator assignment ({{operator}}) shorthand."
         }
@@ -91,3 +91,3 @@ },
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -105,3 +105,3 @@ /**
          * Ensures that an assignment uses the shorthand form where possible.
-         * @param   {ASTNode} node An AssignmentExpression node.
+         * @param {ASTNode} node An AssignmentExpression node.
          * @returns {void}
@@ -119,2 +119,4 @@ */
             if (isCommutativeOperatorWithShorthand(operator) || isNonCommutativeOperatorWithShorthand(operator)) {
+                const replacementOperator = `${operator}=`;
+
                 if (astUtils.isSameReference(left, expr.left, true)) {
@@ -124,2 +126,3 @@ context.report({
                         messageId: "replaced",
+                        data: { operator: replacementOperator },
                         fix(fixer) {
@@ -137,3 +140,3 @@ if (canBeFixed(left) && canBeFixed(expr.left)) {
 
-                                return fixer.replaceText(node, `${leftText}${expr.operator}=${rightText}`);
+                                return fixer.replaceText(node, `${leftText}${replacementOperator}${rightText}`);
                             }
@@ -152,3 +155,4 @@ return null;
                         node,
-                        messageId: "replaced"
+                        messageId: "replaced",
+                        data: { operator: replacementOperator }
                     });
@@ -161,3 +165,3 @@ }
          * Warns if an assignment expression uses operator assignment shorthand.
-         * @param   {ASTNode} node An AssignmentExpression node.
+         * @param {ASTNode} node An AssignmentExpression node.
          * @returns {void}
@@ -170,2 +174,3 @@ */
                     messageId: "unexpected",
+                    data: { operator: node.operator },
                     fix(fixer) {
@@ -172,0 +177,0 @@ if (canBeFixed(node.left)) {

lib/rules/operator-linebreak.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "enforce consistent linebreak style for operators",
-            category: "Stylistic Issues",
+            description: "Enforce consistent linebreak style for operators",
             recommended: false,
-            url: "https://eslint.org/docs/rules/operator-linebreak"
+            url: "https://eslint.org/docs/latest/rules/operator-linebreak"
         },
@@ -74,3 +74,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -142,19 +142,17 @@ //--------------------------------------------------------------------------
          * @param {ASTNode} node The node to check
-         * @param {ASTNode} leftSide The node that comes before the operator in `node`
+         * @param {ASTNode} rightSide The node that comes after the operator in `node`
+         * @param {string} operator The operator
          * @private
          * @returns {void}
          */
-        function validateNode(node, leftSide) {
+        function validateNode(node, rightSide, operator) {
 
             /*
-             * When the left part of a binary expression is a single expression wrapped in
-             * parentheses (ex: `(a) + b`), leftToken will be the last token of the expression
-             * and operatorToken will be the closing parenthesis.
-             * The leftToken should be the last closing parenthesis, and the operatorToken
-             * should be the token right after that.
+             * Find the operator token by searching from the right side, because between the left side and the operator
+             * there could be additional tokens from type annotations. Search specifically for the token which
+             * value equals the operator, in order to skip possible opening parentheses before the right side node.
              */
-            const operatorToken = sourceCode.getTokenAfter(leftSide, astUtils.isNotClosingParenToken);
+            const operatorToken = sourceCode.getTokenBefore(rightSide, token => token.value === operator);
             const leftToken = sourceCode.getTokenBefore(operatorToken);
             const rightToken = sourceCode.getTokenAfter(operatorToken);
-            const operator = operatorToken.value;
             const operatorStyleOverride = styleOverrides[operator];
@@ -229,3 +227,3 @@ const style = operatorStyleOverride || globalStyle;
         function validateBinaryExpression(node) {
-            validateNode(node, node.left);
+            validateNode(node, node.right, node.operator);
         }
@@ -243,8 +241,13 @@
                 if (node.init) {
-                    validateNode(node, node.id);
+                    validateNode(node, node.init, "=");
                 }
             },
+            PropertyDefinition(node) {
+                if (node.value) {
+                    validateNode(node, node.value, "=");
+                }
+            },
             ConditionalExpression(node) {
-                validateNode(node, node.test);
-                validateNode(node, node.consequent);
+                validateNode(node, node.consequent, "?");
+                validateNode(node, node.alternate, ":");
             }
@@ -251,0 +254,0 @@ };

lib/rules/padded-blocks.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "require or disallow padding within blocks",
-            category: "Stylistic Issues",
+            description: "Require or disallow padding within blocks",
             recommended: false,
-            url: "https://eslint.org/docs/rules/padded-blocks"
+            url: "https://eslint.org/docs/latest/rules/padded-blocks"
         },
@@ -101,3 +101,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -113,2 +113,8 @@ /**
             }
+
+            if (node.type === "StaticBlock") {
+                return sourceCode.getFirstToken(node, { skip: 1 }); // skip the `static` token
+            }
+
+            // `BlockStatement` or `ClassBody`
             return sourceCode.getFirstToken(node);
@@ -174,2 +180,3 @@ }
          * @param {ASTNode} node The AST node to check.
+         * @throws {Error} (Unreachable)
          * @returns {boolean} True if the node should be padded, false otherwise.
@@ -180,2 +187,3 @@ */
                 case "BlockStatement":
+                case "StaticBlock":
                     return options.blocks;
@@ -187,3 +195,3 @@ case "SwitchStatement":
 
-                /* istanbul ignore next */
+                /* c8 ignore next */
                 default:
@@ -292,2 +300,3 @@ throw new Error("unreachable");
             };
+            rule.StaticBlock = rule.BlockStatement;
         }
@@ -294,0 +303,0 @@

lib/rules/padding-line-between-statements.js

@@ -134,45 +134,2 @@ /**
 /**
- * Check whether the given node is a directive or not.
- * @param {ASTNode} node The node to check.
- * @param {SourceCode} sourceCode The source code object to get tokens.
- * @returns {boolean} `true` if the node is a directive.
- */
-function isDirective(node, sourceCode) {
-    return (
-        node.type === "ExpressionStatement" &&
-        (
-            node.parent.type === "Program" ||
-            (
-                node.parent.type === "BlockStatement" &&
-                astUtils.isFunction(node.parent.parent)
-            )
-        ) &&
-        node.expression.type === "Literal" &&
-        typeof node.expression.value === "string" &&
-        !astUtils.isParenthesised(sourceCode, node.expression)
-    );
-}
-
-/**
- * Check whether the given node is a part of directive prologue or not.
- * @param {ASTNode} node The node to check.
- * @param {SourceCode} sourceCode The source code object to get tokens.
- * @returns {boolean} `true` if the node is a part of directive prologue.
- */
-function isDirectivePrologue(node, sourceCode) {
-    if (isDirective(node, sourceCode)) {
-        for (const sibling of node.parent.body) {
-            if (sibling === node) {
-                break;
-            }
-            if (!isDirective(sibling, sourceCode)) {
-                return false;
-            }
-        }
-        return true;
-    }
-    return false;
-}
-
-/**
  * Gets the actual last token.
@@ -257,3 +214,3 @@ *
             const end = nextToken.range[0];
-            const text = context.getSourceCode().text
+            const text = context.sourceCode.text
                 .slice(start, end)
@@ -289,3 +246,3 @@ .replace(PADDING_LINE_SEQUENCE, replacerToRemovePaddingLines);
         fix(fixer) {
-            const sourceCode = context.getSourceCode();
+            const sourceCode = context.sourceCode;
             let prevToken = getActualLastToken(sourceCode, prevNode);
@@ -372,8 +329,6 @@ const nextToken = sourceCode.getFirstTokenBetween(
     directive: {
-        test: isDirectivePrologue
+        test: astUtils.isDirective
     },
     expression: {
-        test: (node, sourceCode) =>
-            node.type === "ExpressionStatement" &&
-            !isDirectivePrologue(node, sourceCode)
+        test: node => node.type === "ExpressionStatement" && !astUtils.isDirective(node)
     },
@@ -389,6 +344,6 @@ iife: {
     "multiline-expression": {
-        test: (node, sourceCode) =>
+        test: node =>
             node.loc.start.line !== node.loc.end.line &&
             node.type === "ExpressionStatement" &&
-            !isDirectivePrologue(node, sourceCode)
+            !astUtils.isDirective(node)
     },
@@ -433,2 +388,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -439,6 +395,5 @@ meta: {
         docs: {
-            description: "require or disallow padding lines between statements",
-            category: "Stylistic Issues",
+            description: "Require or disallow padding lines between statements",
             recommended: false,
-            url: "https://eslint.org/docs/rules/padding-line-between-statements"
+            url: "https://eslint.org/docs/latest/rules/padding-line-between-statements"
         },
@@ -460,4 +415,3 @@
                             minItems: 1,
-                            uniqueItems: true,
-                            additionalItems: false
+                            uniqueItems: true
                         }
@@ -477,4 +431,3 @@ ]
                 required: ["blankLine", "prev", "next"]
-            },
-            additionalItems: false
+            }
         },
@@ -489,3 +442,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const configureList = context.options || [];
@@ -632,5 +585,7 @@ let scopeInfo = null;
             SwitchStatement: enterScope,
+            StaticBlock: enterScope,
             "Program:exit": exitScope,
             "BlockStatement:exit": exitScope,
             "SwitchStatement:exit": exitScope,
+            "StaticBlock:exit": exitScope,
 
@@ -637,0 +592,0 @@ ":statement": verify,

lib/rules/prefer-arrow-callback.js

@@ -56,3 +56,3 @@ /**
 
-    /* istanbul ignore next */
+    /* c8 ignore next */
     return null;
@@ -64,2 +64,3 @@ }
  * @param {ASTNode} node A node to check.
+ * @throws {Error} (Unreachable.)
  * @returns {Object}
@@ -130,3 +131,3 @@ *   {boolean} retv.isCallback - `true` if the node is a callback.
 
-    /* istanbul ignore next */
+    /* c8 ignore next */
     throw new Error("unreachable");
@@ -150,2 +151,3 @@ }
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -156,6 +158,5 @@ meta: {
         docs: {
-            description: "require using arrow functions for callbacks",
-            category: "ECMAScript 6",
+            description: "Require using arrow functions for callbacks",
             recommended: false,
-            url: "https://eslint.org/docs/rules/prefer-arrow-callback"
+            url: "https://eslint.org/docs/latest/rules/prefer-arrow-callback"
         },
@@ -192,3 +193,3 @@
         const allowNamedFunctions = options.allowNamedFunctions;
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -271,3 +272,3 @@ /*
                 // Skip recursive functions.
-                const nameVar = context.getDeclaredVariables(node)[0];
+                const nameVar = sourceCode.getDeclaredVariables(node)[0];
 
@@ -279,3 +280,3 @@ if (isFunctionName(nameVar) && nameVar.references.length > 0) {
                 // Skip if it's using arguments.
-                const variable = getVariableOfArguments(context.getScope());
+                const variable = getVariableOfArguments(sourceCode.getScope(node));
 
@@ -306,3 +307,3 @@ if (variable && variable.references.length > 0) {
                                  */
-                                return; // eslint-disable-line eslint-plugin/fixer-return -- false positive
+                                return;
                             }
@@ -319,3 +320,3 @@
                                 if (memberNode.type !== "MemberExpression") {
-                                    return; // eslint-disable-line eslint-plugin/fixer-return -- false positive
+                                    return;
                                 }
@@ -333,3 +334,3 @@
                                 if (astUtils.isParenthesised(sourceCode, memberNode)) {
-                                    return; // eslint-disable-line eslint-plugin/fixer-return -- false positive
+                                    return;
                                 }
@@ -339,3 +340,3 @@
                                 if (sourceCode.commentsExistBetween(firstTokenToRemove, lastTokenToRemove)) {
-                                    return; // eslint-disable-line eslint-plugin/fixer-return -- false positive
+                                    return;
                                 }
@@ -349,2 +350,3 @@
                             const leftParenToken = sourceCode.getTokenAfter(functionToken, astUtils.isOpeningParenToken);
+                            const tokenBeforeBody = sourceCode.getTokenBefore(node.body);
 
@@ -363,3 +365,3 @@ if (sourceCode.commentsExistBetween(functionToken, leftParenToken)) {
                             }
-                            yield fixer.insertTextBefore(node.body, "=> ");
+                            yield fixer.insertTextAfter(tokenBeforeBody, " =>");
 
@@ -366,0 +368,0 @@ // Get the node that will become the new arrow function.

lib/rules/prefer-const.js

@@ -20,3 +20,3 @@ /**
 const PATTERN_TYPE = /^(?:.+?Pattern|RestElement|SpreadProperty|ExperimentalRestProperty|Property)$/u;
-const DECLARATION_HOST_TYPE = /^(?:Program|BlockStatement|SwitchCase)$/u;
+const DECLARATION_HOST_TYPE = /^(?:Program|BlockStatement|StaticBlock|SwitchCase)$/u;
 const DESTRUCTURING_HOST_TYPE = /^(?:VariableDeclarator|AssignmentExpression)$/u;
@@ -64,3 +64,3 @@
 
-    if (initScope.through.find(ref => ref.resolved && ref.resolved.name === name)) {
+    if (initScope.through.some(ref => ref.resolved && ref.resolved.name === name)) {
         return true;
@@ -331,2 +331,3 @@ }
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -337,6 +338,5 @@ meta: {
         docs: {
-            description: "require `const` declarations for variables that are never reassigned after declared",
-            category: "ECMAScript 6",
+            description: "Require `const` declarations for variables that are never reassigned after declared",
             recommended: false,
-            url: "https://eslint.org/docs/rules/prefer-const"
+            url: "https://eslint.org/docs/latest/rules/prefer-const"
         },
@@ -363,3 +363,3 @@
         const options = context.options[0] || {};
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const shouldMatchAnyDestructuredVariable = options.destructuring !== "all";
@@ -454,3 +454,15 @@ const ignoreReadBeforeAssign = options.ignoreReadBeforeAssign === true;
 
-                        shouldFix = shouldFix && (reportCount === varDeclParent.declarations.length);
+                        let totalDeclarationsCount = 0;
+
+                        varDeclParent.declarations.forEach(declaration => {
+                            if (declaration.id.type === "ObjectPattern") {
+                                totalDeclarationsCount += declaration.id.properties.length;
+                            } else if (declaration.id.type === "ArrayPattern") {
+                                totalDeclarationsCount += declaration.id.elements.length;
+                            } else {
+                                totalDeclarationsCount += 1;
+                            }
+                        });
+
+                        shouldFix = shouldFix && (reportCount === totalDeclarationsCount);
                     }
@@ -490,3 +502,3 @@ }
                 if (node.kind === "let" && !isInitOfForStatement(node)) {
-                    variables.push(...context.getDeclaredVariables(node));
+                    variables.push(...sourceCode.getDeclaredVariables(node));
                 }
@@ -493,0 +505,0 @@ }

lib/rules/prefer-destructuring.js

@@ -23,2 +23,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -29,6 +30,5 @@ meta: {
         docs: {
-            description: "require destructuring from arrays and/or objects",
-            category: "ECMAScript 6",
+            description: "Require destructuring from arrays and/or objects",
             recommended: false,
-            url: "https://eslint.org/docs/rules/prefer-destructuring"
+            url: "https://eslint.org/docs/latest/rules/prefer-destructuring"
         },
@@ -124,4 +124,4 @@
 
-        // eslint-disable-next-line jsdoc/require-description
         /**
+         * Checks if destructuring type should be checked.
          * @param {string} nodeType "AssignmentExpression" or "VariableDeclarator"
@@ -174,3 +174,3 @@ * @param {string} destructuringType "array" or "object"
          * Renamed property is not fixed.
-         * @param {ASTNode} node the the node to evaluate
+         * @param {ASTNode} node the node to evaluate
          * @returns {boolean} whether or not the node should be fixed
@@ -197,3 +197,3 @@ */
             const rightNode = node.init;
-            const sourceCode = context.getSourceCode();
+            const sourceCode = context.sourceCode;
 
@@ -229,3 +229,7 @@ // Don't fix if that would remove any comments. Only comments inside `rightNode.object` can be preserved.
         function performCheck(leftNode, rightNode, reportNode) {
-            if (rightNode.type !== "MemberExpression" || rightNode.object.type === "Super") {
+            if (
+                rightNode.type !== "MemberExpression" ||
+                rightNode.object.type === "Super" ||
+                rightNode.property.type === "PrivateIdentifier"
+            ) {
                 return;
@@ -232,0 +236,0 @@ }

lib/rules/prefer-exponentiation-operator.js

@@ -13,3 +13,3 @@ /**
 const astUtils = require("./utils/ast-utils");
-const { CALL, ReferenceTracker } = require("eslint-utils");
+const { CALL, ReferenceTracker } = require("@eslint-community/eslint-utils");
 
@@ -59,2 +59,3 @@ //------------------------------------------------------------------------------
 
+    const parentPrecedence = astUtils.getPrecedence(parent);
     const needsParens = (
@@ -64,3 +65,3 @@ parent.type === "ClassDeclaration" ||
             parent.type.endsWith("Expression") &&
-            astUtils.getPrecedence(parent) >= PRECEDENCE_OF_EXPONENTIATION_EXPR &&
+            (parentPrecedence === -1 || parentPrecedence >= PRECEDENCE_OF_EXPONENTIATION_EXPR) &&
             !(parent.type === "BinaryExpression" && parent.operator === "**" && parent.right === node) &&
@@ -90,2 +91,3 @@ !((parent.type === "CallExpression" || parent.type === "NewExpression") && parent.arguments.includes(node)) &&
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -96,6 +98,5 @@ meta: {
         docs: {
-            description: "disallow the use of `Math.pow` in favor of the `**` operator",
-            category: "Stylistic Issues",
+            description: "Disallow the use of `Math.pow` in favor of the `**` operator",
             recommended: false,
-            url: "https://eslint.org/docs/rules/prefer-exponentiation-operator"
+            url: "https://eslint.org/docs/latest/rules/prefer-exponentiation-operator"
         },
@@ -112,3 +113,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -181,4 +182,4 @@ /**
         return {
-            Program() {
-                const scope = context.getScope();
+            Program(node) {
+                const scope = sourceCode.getScope(node);
                 const tracker = new ReferenceTracker(scope);
@@ -191,4 +192,4 @@ const trackMap = {
 
-                for (const { node } of tracker.iterateGlobalReferences(trackMap)) {
-                    report(node);
+                for (const { node: refNode } of tracker.iterateGlobalReferences(trackMap)) {
+                    report(refNode);
                 }
@@ -195,0 +196,0 @@ }

lib/rules/prefer-named-capture-group.js

@@ -17,4 +17,4 @@ /**
     getStringIfConstant
-} = require("eslint-utils");
-const regexpp = require("regexpp");
+} = require("@eslint-community/eslint-utils");
+const regexpp = require("@eslint-community/regexpp");
 
@@ -27,2 +27,57 @@ //------------------------------------------------------------------------------
 
+/**
+ * Creates fixer suggestions for the regex, if statically determinable.
+ * @param {number} groupStart Starting index of the regex group.
+ * @param {string} pattern The regular expression pattern to be checked.
+ * @param {string} rawText Source text of the regexNode.
+ * @param {ASTNode} regexNode AST node which contains the regular expression.
+ * @returns {Array<SuggestionResult>} Fixer suggestions for the regex, if statically determinable.
+ */
+function suggestIfPossible(groupStart, pattern, rawText, regexNode) {
+    switch (regexNode.type) {
+        case "Literal":
+            if (typeof regexNode.value === "string" && rawText.includes("\\")) {
+                return null;
+            }
+            break;
+        case "TemplateLiteral":
+            if (regexNode.expressions.length || rawText.slice(1, -1) !== pattern) {
+                return null;
+            }
+            break;
+        default:
+            return null;
+    }
+
+    const start = regexNode.range[0] + groupStart + 2;
+
+    return [
+        {
+            fix(fixer) {
+                const existingTemps = pattern.match(/temp\d+/gu) || [];
+                const highestTempCount = existingTemps.reduce(
+                    (previous, next) =>
+                        Math.max(previous, Number(next.slice("temp".length))),
+                    0
+                );
+
+                return fixer.insertTextBeforeRange(
+                    [start, start],
+                    `?<temp${highestTempCount + 1}>`
+                );
+            },
+            messageId: "addGroupName"
+        },
+        {
+            fix(fixer) {
+                return fixer.insertTextBeforeRange(
+                    [start, start],
+                    "?:"
+                );
+            },
+            messageId: "addNonCapture"
+        }
+    ];
+}
+
 //------------------------------------------------------------------------------
@@ -32,2 +87,3 @@ // Rule Definition
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -38,11 +94,14 @@ meta: {
         docs: {
-            description: "enforce using named capture group in regular expression",
-            category: "Best Practices",
+            description: "Enforce using named capture group in regular expression",
             recommended: false,
-            url: "https://eslint.org/docs/rules/prefer-named-capture-group"
+            url: "https://eslint.org/docs/latest/rules/prefer-named-capture-group"
         },
 
+        hasSuggestions: true,
+
         schema: [],
 
         messages: {
+            addGroupName: "Add name to capture group.",
+            addNonCapture: "Convert group to non-capturing.",
             required: "Capture group '{{group}}' should be converted to a named or non-capturing group."
@@ -53,15 +112,20 @@ }
     create(context) {
+        const sourceCode = context.sourceCode;
 
         /**
          * Function to check regular expression.
-         * @param {string} pattern The regular expression pattern to be check.
-         * @param {ASTNode} node AST node which contains regular expression.
-         * @param {boolean} uFlag Flag indicates whether unicode mode is enabled or not.
+         * @param {string} pattern The regular expression pattern to be checked.
+         * @param {ASTNode} node AST node which contains the regular expression or a call/new expression.
+         * @param {ASTNode} regexNode AST node which contains the regular expression.
+         * @param {string|null} flags The regular expression flags to be checked.
          * @returns {void}
          */
-        function checkRegex(pattern, node, uFlag) {
+        function checkRegex(pattern, node, regexNode, flags) {
             let ast;
 
             try {
-                ast = parser.parsePattern(pattern, 0, pattern.length, uFlag);
+                ast = parser.parsePattern(pattern, 0, pattern.length, {
+                    unicode: Boolean(flags && flags.includes("u")),
+                    unicodeSets: Boolean(flags && flags.includes("v"))
+                });
             } catch {
@@ -76,2 +140,5 @@
                     if (!group.name) {
+                        const rawText = sourceCode.getText(regexNode);
+                        const suggest = suggestIfPossible(group.start, pattern, rawText, regexNode);
+
                         context.report({
@@ -82,3 +149,4 @@ node,
                                 group: group.raw
-                            }
+                            },
+                            suggest
                         });
@@ -93,7 +161,7 @@ }
                 if (node.regex) {
-                    checkRegex(node.regex.pattern, node, node.regex.flags.includes("u"));
+                    checkRegex(node.regex.pattern, node, node, node.regex.flags);
                 }
             },
-            Program() {
-                const scope = context.getScope();
+            Program(node) {
+                const scope = sourceCode.getScope(node);
                 const tracker = new ReferenceTracker(scope);
@@ -107,8 +175,8 @@ const traceMap = {
 
-                for (const { node } of tracker.iterateGlobalReferences(traceMap)) {
-                    const regex = getStringIfConstant(node.arguments[0]);
-                    const flags = getStringIfConstant(node.arguments[1]);
+                for (const { node: refNode } of tracker.iterateGlobalReferences(traceMap)) {
+                    const regex = getStringIfConstant(refNode.arguments[0]);
+                    const flags = getStringIfConstant(refNode.arguments[1]);
 
                     if (regex) {
-                        checkRegex(regex, node, flags && flags.includes("u"));
+                        checkRegex(regex, refNode, refNode.arguments[0], flags);
                     }
@@ -115,0 +183,0 @@ }

lib/rules/prefer-numeric-literals.js

@@ -42,2 +42,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -48,6 +49,5 @@ meta: {
         docs: {
-            description: "disallow `parseInt()` and `Number.parseInt()` in favor of binary, octal, and hexadecimal literals",
-            category: "ECMAScript 6",
+            description: "Disallow `parseInt()` and `Number.parseInt()` in favor of binary, octal, and hexadecimal literals",
             recommended: false,
-            url: "https://eslint.org/docs/rules/prefer-numeric-literals"
+            url: "https://eslint.org/docs/latest/rules/prefer-numeric-literals"
         },
@@ -65,3 +65,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -68,0 +68,0 @@ //----------------------------------------------------------------------

lib/rules/prefer-object-spread.js

 /**
  * @fileoverview Prefers object spread property over Object.assign
  * @author Sharmila Jesupaul
- * See LICENSE file in root directory for full license.
  */
@@ -9,3 +8,3 @@
 
-const { CALL, ReferenceTracker } = require("eslint-utils");
+const { CALL, ReferenceTracker } = require("@eslint-community/eslint-utils");
 const {
@@ -244,2 +243,3 @@ isCommaToken,
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -251,6 +251,5 @@ meta: {
             description:
-                "disallow using Object.assign with an object literal as the first argument and prefer the use of object spread instead.",
-            category: "Stylistic Issues",
+                "Disallow using Object.assign with an object literal as the first argument and prefer the use of object spread instead",
             recommended: false,
-            url: "https://eslint.org/docs/rules/prefer-object-spread"
+            url: "https://eslint.org/docs/latest/rules/prefer-object-spread"
         },
@@ -268,7 +267,7 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
         return {
-            Program() {
-                const scope = context.getScope();
+            Program(node) {
+                const scope = sourceCode.getScope(node);
                 const tracker = new ReferenceTracker(scope);
@@ -282,18 +281,18 @@ const trackMap = {
                 // Iterate all calls of `Object.assign` (only of the global variable `Object`).
-                for (const { node } of tracker.iterateGlobalReferences(trackMap)) {
+                for (const { node: refNode } of tracker.iterateGlobalReferences(trackMap)) {
                     if (
-                        node.arguments.length >= 1 &&
-                        node.arguments[0].type === "ObjectExpression" &&
-                        !hasArraySpread(node) &&
+                        refNode.arguments.length >= 1 &&
+                        refNode.arguments[0].type === "ObjectExpression" &&
+                        !hasArraySpread(refNode) &&
                         !(
-                            node.arguments.length > 1 &&
-                            hasArgumentsWithAccessors(node)
+                            refNode.arguments.length > 1 &&
+                            hasArgumentsWithAccessors(refNode)
                         )
                     ) {
-                        const messageId = node.arguments.length === 1
+                        const messageId = refNode.arguments.length === 1
                             ? "useLiteralMessage"
                             : "useSpreadMessage";
-                        const fix = defineFixer(node, sourceCode);
+                        const fix = defineFixer(refNode, sourceCode);
 
-                        context.report({ node, messageId, fix });
+                        context.report({ node: refNode, messageId, fix });
                     }
@@ -300,0 +299,0 @@ }

lib/rules/prefer-promise-reject-errors.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "require using Error objects as Promise rejection reasons",
-            category: "Best Practices",
+            description: "Require using Error objects as Promise rejection reasons",
             recommended: false,
-            url: "https://eslint.org/docs/rules/prefer-promise-reject-errors"
+            url: "https://eslint.org/docs/latest/rules/prefer-promise-reject-errors"
         },
@@ -46,2 +46,3 @@
         const ALLOW_EMPTY_REJECT = context.options.length && context.options[0].allowEmptyReject;
+        const sourceCode = context.sourceCode;
 
@@ -106,3 +107,3 @@ //----------------------------------------------------------------------
                 ) {
-                    context.getDeclaredVariables(node.arguments[0])
+                    sourceCode.getDeclaredVariables(node.arguments[0])
 
@@ -109,0 +110,0 @@ /*

lib/rules/prefer-reflect.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "require `Reflect` methods where applicable",
-            category: "ECMAScript 6",
+            description: "Require `Reflect` methods where applicable",
             recommended: false,
-            url: "https://eslint.org/docs/rules/prefer-reflect"
+            url: "https://eslint.org/docs/latest/rules/prefer-reflect"
         },
@@ -111,3 +111,3 @@
                 const hasReflectSubstitute = Object.prototype.hasOwnProperty.call(reflectSubstitutes, methodName);
-                const userConfiguredException = exceptions.indexOf(methodName) !== -1;
+                const userConfiguredException = exceptions.includes(methodName);
 
@@ -121,3 +121,3 @@ if (hasReflectSubstitute && !isReflectCall && !userConfiguredException) {
                 const targetsIdentifier = node.argument.type === "Identifier";
-                const userConfiguredException = exceptions.indexOf("delete") !== -1;
+                const userConfiguredException = exceptions.includes("delete");
 
@@ -124,0 +124,0 @@ if (isDeleteOperator && !targetsIdentifier && !userConfiguredException) {

lib/rules/prefer-regex-literals.js

@@ -13,3 +13,6 @@ /**
 const astUtils = require("./utils/ast-utils");
-const { CALL, CONSTRUCT, ReferenceTracker, findVariable } = require("eslint-utils");
+const { CALL, CONSTRUCT, ReferenceTracker, findVariable } = require("@eslint-community/eslint-utils");
+const { RegExpValidator, visitRegExpAST, RegExpParser } = require("@eslint-community/regexpp");
+const { canTokensBeAdjacent } = require("./utils/ast-utils");
+const { REGEXPP_LATEST_ECMA_VERSION } = require("./utils/regular-expressions");
 
@@ -38,10 +41,66 @@ //------------------------------------------------------------------------------
 
-/**
- * Determines whether the given node is a template literal without expressions.
- * @param {ASTNode} node Node to check.
- * @returns {boolean} True if the node is a template literal without expressions.
- */
-function isStaticTemplateLiteral(node) {
-    return node.type === "TemplateLiteral" && node.expressions.length === 0;
-}
+const validPrecedingTokens = new Set([
+    "(",
+    ";",
+    "[",
+    ",",
+    "=",
+    "+",
+    "*",
+    "-",
+    "?",
+    "~",
+    "%",
+    "**",
+    "!",
+    "typeof",
+    "instanceof",
+    "&&",
+    "||",
+    "??",
+    "return",
+    "...",
+    "delete",
+    "void",
+    "in",
+    "<",
+    ">",
+    "<=",
+    ">=",
+    "==",
+    "===",
+    "!=",
+    "!==",
+    "<<",
+    ">>",
+    ">>>",
+    "&",
+    "|",
+    "^",
+    ":",
+    "{",
+    "=>",
+    "*=",
+    "<<=",
+    ">>=",
+    ">>>=",
+    "^=",
+    "|=",
+    "&=",
+    "??=",
+    "||=",
+    "&&=",
+    "**=",
+    "+=",
+    "-=",
+    "/=",
+    "%=",
+    "/",
+    "do",
+    "break",
+    "continue",
+    "debugger",
+    "case",
+    "throw"
+]);
 
@@ -53,2 +112,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -59,8 +119,9 @@ meta: {
         docs: {
-            description: "disallow use of the `RegExp` constructor in favor of regular expression literals",
-            category: "Best Practices",
+            description: "Disallow use of the `RegExp` constructor in favor of regular expression literals",
             recommended: false,
-            url: "https://eslint.org/docs/rules/prefer-regex-literals"
+            url: "https://eslint.org/docs/latest/rules/prefer-regex-literals"
         },
 
+        hasSuggestions: true,
+
         schema: [
@@ -81,2 +142,5 @@ {
             unexpectedRegExp: "Use a regular expression literal instead of the 'RegExp' constructor.",
+            replaceWithLiteral: "Replace with an equivalent regular expression literal.",
+            replaceWithLiteralAndFlags: "Replace with an equivalent regular expression literal with flags '{{ flags }}'.",
+            replaceWithIntendedLiteralAndFlags: "Replace with a regular expression literal with flags '{{ flags }}'.",
             unexpectedRedundantRegExp: "Regular expression literal is unnecessarily wrapped within a 'RegExp' constructor.",
@@ -89,2 +153,3 @@ unexpectedRedundantRegExpWithFlags: "Use regular expression literal with flags instead of the 'RegExp' constructor."
         const [{ disallowRedundantWrapping = false } = {}] = context.options;
+        const sourceCode = context.sourceCode;
 
@@ -97,3 +162,3 @@ /**
         function isGlobalReference(node) {
-            const scope = context.getScope();
+            const scope = sourceCode.getScope(node);
             const variable = findVariable(scope, node);
@@ -114,6 +179,27 @@
                 isGlobalReference(astUtils.skipChainExpression(node.tag).object) &&
-                isStaticTemplateLiteral(node.quasi);
+                astUtils.isStaticTemplateLiteral(node.quasi);
         }
 
         /**
+         * Gets the value of a string
+         * @param {ASTNode} node The node to get the string of.
+         * @returns {string|null} The value of the node.
+         */
+        function getStringValue(node) {
+            if (isStringLiteral(node)) {
+                return node.value;
+            }
+
+            if (astUtils.isStaticTemplateLiteral(node)) {
+                return node.quasis[0].value.cooked;
+            }
+
+            if (isStringRawTaggedStaticTemplateLiteral(node)) {
+                return node.quasi.quasis[0].value.raw;
+            }
+
+            return null;
+        }
+
+        /**
          * Determines whether the given node is considered to be a static string by the logic of this rule.
@@ -125,3 +211,3 @@ * @param {ASTNode} node Node to check.
             return isStringLiteral(node) ||
-                isStaticTemplateLiteral(node) ||
+                astUtils.isStaticTemplateLiteral(node) ||
                 isStringRawTaggedStaticTemplateLiteral(node);
@@ -164,5 +250,134 @@ }
 
+        /**
+         * Returns a ecmaVersion compatible for regexpp.
+         * @param {number} ecmaVersion The ecmaVersion to convert.
+         * @returns {import("@eslint-community/regexpp/ecma-versions").EcmaVersion} The resulting ecmaVersion compatible for regexpp.
+         */
+        function getRegexppEcmaVersion(ecmaVersion) {
+            if (ecmaVersion <= 5) {
+                return 5;
+            }
+            return Math.min(ecmaVersion, REGEXPP_LATEST_ECMA_VERSION);
+        }
+
+        const regexppEcmaVersion = getRegexppEcmaVersion(context.languageOptions.ecmaVersion);
+
+        /**
+         * Makes a character escaped or else returns null.
+         * @param {string} character The character to escape.
+         * @returns {string} The resulting escaped character.
+         */
+        function resolveEscapes(character) {
+            switch (character) {
+                case "\n":
+                case "\\\n":
+                    return "\\n";
+
+                case "\r":
+                case "\\\r":
+                    return "\\r";
+
+                case "\t":
+                case "\\\t":
+                    return "\\t";
+
+                case "\v":
+                case "\\\v":
+                    return "\\v";
+
+                case "\f":
+                case "\\\f":
+                    return "\\f";
+
+                case "/":
+                    return "\\/";
+
+                default:
+                    return null;
+            }
+        }
+
+        /**
+         * Checks whether the given regex and flags are valid for the ecma version or not.
+         * @param {string} pattern The regex pattern to check.
+         * @param {string | undefined} flags The regex flags to check.
+         * @returns {boolean} True if the given regex pattern and flags are valid for the ecma version.
+         */
+        function isValidRegexForEcmaVersion(pattern, flags) {
+            const validator = new RegExpValidator({ ecmaVersion: regexppEcmaVersion });
+
+            try {
+                validator.validatePattern(pattern, 0, pattern.length, {
+                    unicode: flags ? flags.includes("u") : false,
+                    unicodeSets: flags ? flags.includes("v") : false
+                });
+                if (flags) {
+                    validator.validateFlags(flags);
+                }
+                return true;
+            } catch {
+                return false;
+            }
+        }
+
+        /**
+         * Checks whether two given regex flags contain the same flags or not.
+         * @param {string} flagsA The regex flags.
+         * @param {string} flagsB The regex flags.
+         * @returns {boolean} True if two regex flags contain same flags.
+         */
+        function areFlagsEqual(flagsA, flagsB) {
+            return [...flagsA].sort().join("") === [...flagsB].sort().join("");
+        }
+
+
+        /**
+         * Merges two regex flags.
+         * @param {string} flagsA The regex flags.
+         * @param {string} flagsB The regex flags.
+         * @returns {string} The merged regex flags.
+         */
+        function mergeRegexFlags(flagsA, flagsB) {
+            const flagsSet = new Set([
+                ...flagsA,
+                ...flagsB
+            ]);
+
+            return [...flagsSet].join("");
+        }
+
+        /**
+         * Checks whether a give node can be fixed to the given regex pattern and flags.
+         * @param {ASTNode} node The node to check.
+         * @param {string} pattern The regex pattern to check.
+         * @param {string} flags The regex flags
+         * @returns {boolean} True if a node can be fixed to the given regex pattern and flags.
+         */
+        function canFixTo(node, pattern, flags) {
+            const tokenBefore = sourceCode.getTokenBefore(node);
+
+            return sourceCode.getCommentsInside(node).length === 0 &&
+                (!tokenBefore || validPrecedingTokens.has(tokenBefore.value)) &&
+                isValidRegexForEcmaVersion(pattern, flags);
+        }
+
+        /**
+         * Returns a safe output code considering the before and after tokens.
+         * @param {ASTNode} node The regex node.
+         * @param {string} newRegExpValue The new regex expression value.
+         * @returns {string} The output code.
+         */
+        function getSafeOutput(node, newRegExpValue) {
+            const tokenBefore = sourceCode.getTokenBefore(node);
+            const tokenAfter = sourceCode.getTokenAfter(node);
+
+            return (tokenBefore && !canTokensBeAdjacent(tokenBefore, newRegExpValue) && tokenBefore.range[1] === node.range[0] ? " " : "") +
+                newRegExpValue +
+            (tokenAfter && !canTokensBeAdjacent(newRegExpValue, tokenAfter) && node.range[1] === tokenAfter.range[0] ? " " : "");
+
+        }
+
         return {
-            Program() {
-                const scope = context.getScope();
+            Program(node) {
+                const scope = sourceCode.getScope(node);
                 const tracker = new ReferenceTracker(scope);
@@ -176,11 +391,123 @@ const traceMap = {
 
-                for (const { node } of tracker.iterateGlobalReferences(traceMap)) {
-                    if (disallowRedundantWrapping && isUnnecessarilyWrappedRegexLiteral(node)) {
-                        if (node.arguments.length === 2) {
-                            context.report({ node, messageId: "unexpectedRedundantRegExpWithFlags" });
+                for (const { node: refNode } of tracker.iterateGlobalReferences(traceMap)) {
+                    if (disallowRedundantWrapping && isUnnecessarilyWrappedRegexLiteral(refNode)) {
+                        const regexNode = refNode.arguments[0];
+
+                        if (refNode.arguments.length === 2) {
+                            const suggests = [];
+
+                            const argFlags = getStringValue(refNode.arguments[1]) || "";
+
+                            if (canFixTo(refNode, regexNode.regex.pattern, argFlags)) {
+                                suggests.push({
+                                    messageId: "replaceWithLiteralAndFlags",
+                                    pattern: regexNode.regex.pattern,
+                                    flags: argFlags
+                                });
+                            }
+
+                            const literalFlags = regexNode.regex.flags || "";
+                            const mergedFlags = mergeRegexFlags(literalFlags, argFlags);
+
+                            if (
+                                !areFlagsEqual(mergedFlags, argFlags) &&
+                                canFixTo(refNode, regexNode.regex.pattern, mergedFlags)
+                            ) {
+                                suggests.push({
+                                    messageId: "replaceWithIntendedLiteralAndFlags",
+                                    pattern: regexNode.regex.pattern,
+                                    flags: mergedFlags
+                                });
+                            }
+
+                            context.report({
+                                node: refNode,
+                                messageId: "unexpectedRedundantRegExpWithFlags",
+                                suggest: suggests.map(({ flags, pattern, messageId }) => ({
+                                    messageId,
+                                    data: {
+                                        flags
+                                    },
+                                    fix(fixer) {
+                                        return fixer.replaceText(refNode, getSafeOutput(refNode, `/${pattern}/${flags}`));
+                                    }
+                                }))
+                            });
                         } else {
-                            context.report({ node, messageId: "unexpectedRedundantRegExp" });
+                            const outputs = [];
+
+                            if (canFixTo(refNode, regexNode.regex.pattern, regexNode.regex.flags)) {
+                                outputs.push(sourceCode.getText(regexNode));
+                            }
+
+
+                            context.report({
+                                node: refNode,
+                                messageId: "unexpectedRedundantRegExp",
+                                suggest: outputs.map(output => ({
+                                    messageId: "replaceWithLiteral",
+                                    fix(fixer) {
+                                        return fixer.replaceText(
+                                            refNode,
+                                            getSafeOutput(refNode, output)
+                                        );
+                                    }
+                                }))
+                            });
                         }
-                    } else if (hasOnlyStaticStringArguments(node)) {
-                        context.report({ node, messageId: "unexpectedRegExp" });
+                    } else if (hasOnlyStaticStringArguments(refNode)) {
+                        let regexContent = getStringValue(refNode.arguments[0]);
+                        let noFix = false;
+                        let flags;
+
+                        if (refNode.arguments[1]) {
+                            flags = getStringValue(refNode.arguments[1]);
+                        }
+
+                        if (!canFixTo(refNode, regexContent, flags)) {
+                            noFix = true;
+                        }
+
+                        if (!/^[-a-zA-Z0-9\\[\](){} \t\r\n\v\f!@#$%^&*+^_=/~`.><?,'"|:;]*$/u.test(regexContent)) {
+                            noFix = true;
+                        }
+
+                        if (regexContent && !noFix) {
+                            let charIncrease = 0;
+
+                            const ast = new RegExpParser({ ecmaVersion: regexppEcmaVersion }).parsePattern(regexContent, 0, regexContent.length, {
+                                unicode: flags ? flags.includes("u") : false,
+                                unicodeSets: flags ? flags.includes("v") : false
+                            });
+
+                            visitRegExpAST(ast, {
+                                onCharacterEnter(characterNode) {
+                                    const escaped = resolveEscapes(characterNode.raw);
+
+                                    if (escaped) {
+                                        regexContent =
+                                            regexContent.slice(0, characterNode.start + charIncrease) +
+                                            escaped +
+                                            regexContent.slice(characterNode.end + charIncrease);
+
+                                        if (characterNode.raw.length === 1) {
+                                            charIncrease += 1;
+                                        }
+                                    }
+                                }
+                            });
+                        }
+
+                        const newRegExpValue = `/${regexContent || "(?:)"}/${flags || ""}`;
+
+                        context.report({
+                            node: refNode,
+                            messageId: "unexpectedRegExp",
+                            suggest: noFix ? [] : [{
+                                messageId: "replaceWithLiteral",
+                                fix(fixer) {
+                                    return fixer.replaceText(refNode, getSafeOutput(refNode, newRegExpValue));
+                                }
+                            }]
+                        });
                     }
@@ -187,0 +514,0 @@ }

lib/rules/prefer-rest-params.js

@@ -33,3 +33,3 @@ /**
 
-    /* istanbul ignore next : unreachable */
+    /* c8 ignore next */
     return null;
@@ -63,2 +63,3 @@ }
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -69,6 +70,5 @@ meta: {
         docs: {
-            description: "require rest parameters instead of `arguments`",
-            category: "ECMAScript 6",
+            description: "Require rest parameters instead of `arguments`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/prefer-rest-params"
+            url: "https://eslint.org/docs/latest/rules/prefer-rest-params"
         },
@@ -85,2 +85,4 @@
 
+        const sourceCode = context.sourceCode;
+
         /**
@@ -101,6 +103,7 @@ * Reports a given reference.
          * Reports references of the implicit `arguments` variable if exist.
+         * @param {ASTNode} node The node representing the function.
          * @returns {void}
          */
-        function checkForArguments() {
-            const argumentsVar = getVariableOfArguments(context.getScope());
+        function checkForArguments(node) {
+            const argumentsVar = getVariableOfArguments(sourceCode.getScope(node));
 
@@ -107,0 +110,0 @@ if (argumentsVar) {

lib/rules/prefer-spread.js

@@ -46,2 +46,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -52,6 +53,5 @@ meta: {
         docs: {
-            description: "require spread operators instead of `.apply()`",
-            category: "ECMAScript 6",
+            description: "Require spread operators instead of `.apply()`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/prefer-spread"
+            url: "https://eslint.org/docs/latest/rules/prefer-spread"
         },
@@ -68,3 +68,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -71,0 +71,0 @@ return {

lib/rules/prefer-template.js

@@ -125,2 +125,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -131,6 +132,5 @@ meta: {
         docs: {
-            description: "require template literals instead of string concatenation",
-            category: "ECMAScript 6",
+            description: "Require template literals instead of string concatenation",
             recommended: false,
-            url: "https://eslint.org/docs/rules/prefer-template"
+            url: "https://eslint.org/docs/latest/rules/prefer-template"
         },
@@ -147,3 +147,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         let done = Object.create(null);
@@ -194,3 +194,3 @@
 
-            if (isConcatenation(currentNode) && hasStringLiteral(currentNode) && hasNonStringLiteral(currentNode)) {
+            if (isConcatenation(currentNode) && hasStringLiteral(currentNode)) {
                 const plusSign = sourceCode.getFirstTokenBetween(currentNode.left, currentNode.right, token => token.value === "+");
@@ -197,0 +197,0 @@ const textBeforePlus = getTextBetween(currentNode.left, plusSign);

lib/rules/quote-props.js

@@ -19,2 +19,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -25,6 +26,5 @@ meta: {
         docs: {
-            description: "require quotes around object literal property names",
-            category: "Stylistic Issues",
+            description: "Require quotes around object literal property names",
             recommended: false,
-            url: "https://eslint.org/docs/rules/quote-props"
+            url: "https://eslint.org/docs/latest/rules/quote-props"
         },
@@ -91,3 +91,3 @@
 
-            sourceCode = context.getSourceCode();
+            sourceCode = context.sourceCode;
 
@@ -97,7 +97,7 @@
          * Checks whether a certain string constitutes an ES3 token
-         * @param   {string} tokenStr The string to be checked.
+         * @param {string} tokenStr The string to be checked.
          * @returns {boolean} `true` if it is an ES3 token.
          */
         function isKeyword(tokenStr) {
-            return keywords.indexOf(tokenStr) >= 0;
+            return keywords.includes(tokenStr);
         }
@@ -107,5 +107,5 @@
          * Checks if an espree-tokenized key has redundant quotes (i.e. whether quotes are unnecessary)
-         * @param   {string} rawKey The raw key value from the source
-         * @param   {espreeTokens} tokens The espree-tokenized node key
-         * @param   {boolean} [skipNumberLiterals=false] Indicates whether number literals should be checked
+         * @param {string} rawKey The raw key value from the source
+         * @param {espreeTokens} tokens The espree-tokenized node key
+         * @param {boolean} [skipNumberLiterals=false] Indicates whether number literals should be checked
          * @returns {boolean} Whether or not a key has redundant quotes.
@@ -116,3 +116,3 @@ * @private
             return tokens.length === 1 && tokens[0].start === 0 && tokens[0].end === rawKey.length &&
-                (["Identifier", "Keyword", "Null", "Boolean"].indexOf(tokens[0].type) >= 0 ||
+                (["Identifier", "Keyword", "Null", "Boolean"].includes(tokens[0].type) ||
                 (tokens[0].type === "Numeric" && !skipNumberLiterals && String(+tokens[0].value) === tokens[0].value));
@@ -148,3 +148,3 @@ }
          * Ensures that a property's key is quoted only when necessary
-         * @param   {ASTNode} node Property AST node
+         * @param {ASTNode} node Property AST node
          * @returns {void}
@@ -205,3 +205,3 @@ */
          * Ensures that a property's key is quoted
-         * @param   {ASTNode} node Property AST node
+         * @param {ASTNode} node Property AST node
          * @returns {void}
@@ -224,4 +224,4 @@ */
          * Ensures that an object's keys are consistently quoted, optionally checks for redundancy of quotes
-         * @param   {ASTNode} node Property AST node
-         * @param   {boolean} checkQuotesRedundancy Whether to check quotes' redundancy
+         * @param {ASTNode} node Property AST node
+         * @param {boolean} checkQuotesRedundancy Whether to check quotes' redundancy
          * @returns {void}
@@ -228,0 +228,0 @@ */

lib/rules/quotes.js

@@ -77,2 +77,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -83,6 +84,5 @@ meta: {
         docs: {
-            description: "enforce the consistent use of either backticks, double, or single quotes",
-            category: "Stylistic Issues",
+            description: "Enforce the consistent use of either backticks, double, or single quotes",
             recommended: false,
-            url: "https://eslint.org/docs/rules/quotes"
+            url: "https://eslint.org/docs/latest/rules/quotes"
         },
@@ -128,3 +128,3 @@
             allowTemplateLiterals = options && options.allowTemplateLiterals === true,
-            sourceCode = context.getSourceCode();
+            sourceCode = context.sourceCode;
         let avoidEscape = options && options.avoidEscape === true;
@@ -163,3 +163,4 @@
          * Checks whether or not a given node is a directive.
-         * The directive is a `ExpressionStatement` which has only a string literal.
+         * The directive is a `ExpressionStatement` which has only a string literal not surrounded by
+         * parentheses.
          * @param {ASTNode} node A node to check.
@@ -173,3 +174,4 @@ * @returns {boolean} Whether or not the node is a directive.
                 node.expression.type === "Literal" &&
-                typeof node.expression.value === "string"
+                typeof node.expression.value === "string" &&
+                !astUtils.isParenthesised(sourceCode, node.expression)
             );
@@ -179,14 +181,13 @@ }
         /**
-         * Checks whether or not a given node is a part of directive prologues.
-         * See also: http://www.ecma-international.org/ecma-262/6.0/#sec-directive-prologues-and-the-use-strict-directive
+         * Checks whether a specified node is either part of, or immediately follows a (possibly empty) directive prologue.
+         * @see {@link http://www.ecma-international.org/ecma-262/6.0/#sec-directive-prologues-and-the-use-strict-directive}
          * @param {ASTNode} node A node to check.
-         * @returns {boolean} Whether or not the node is a part of directive prologues.
+         * @returns {boolean} Whether a specified node is either part of, or immediately follows a (possibly empty) directive prologue.
          * @private
          */
-        function isPartOfDirectivePrologue(node) {
-            const block = node.parent.parent;
-
-            if (block.type !== "Program" && (block.type !== "BlockStatement" || !astUtils.isFunction(block.parent))) {
+        function isExpressionInOrJustAfterDirectivePrologue(node) {
+            if (!astUtils.isTopLevelExpressionStatement(node.parent)) {
                 return false;
             }
+            const block = node.parent.parent;
 
@@ -221,6 +222,7 @@ // Check the node is at a prologue.
                 case "ExpressionStatement":
-                    return isPartOfDirectivePrologue(node);
+                    return !astUtils.isParenthesised(sourceCode, node) && isExpressionInOrJustAfterDirectivePrologue(node);
 
                 // LiteralPropertyName.
                 case "Property":
+                case "PropertyDefinition":
                 case "MethodDefinition":
@@ -232,5 +234,16 @@ return parent.key === node && !parent.computed;
                 case "ExportNamedDeclaration":
-                case "ExportAllDeclaration":
                     return parent.source === node;
 
+                // ModuleExportName or ModuleSpecifier.
+                case "ExportAllDeclaration":
+                    return parent.exported === node || parent.source === node;
+
+                // ModuleExportName.
+                case "ImportSpecifier":
+                    return parent.imported === node;
+
+                // ModuleExportName.
+                case "ExportSpecifier":
+                    return parent.local === node || parent.exported === node;
+
                 // Others don't allow.
@@ -282,3 +295,3 @@ default:
                     if (!isValid && avoidEscape) {
-                        isValid = astUtils.isSurroundedBy(rawVal, settings.alternateQuote) && rawVal.indexOf(settings.quote) >= 0;
+                        isValid = astUtils.isSurroundedBy(rawVal, settings.alternateQuote) && rawVal.includes(settings.quote);
                     }
@@ -328,8 +341,7 @@
                     fix(fixer) {
-                        if (isPartOfDirectivePrologue(node)) {
+                        if (astUtils.isTopLevelExpressionStatement(node.parent) && !astUtils.isParenthesised(sourceCode, node)) {
 
                             /*
-                             * TemplateLiterals in a directive prologue aren't actually directives, but if they're
-                             * in the directive prologue, then fixing them might turn them into directives and change
-                             * the behavior of the code.
+                             * TemplateLiterals aren't actually directives, but fixing them might turn
+                             * them into directives and change the behavior of the code.
                              */
@@ -336,0 +348,0 @@ return null;

lib/rules/radix.js

@@ -77,2 +77,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -83,8 +84,9 @@ meta: {
         docs: {
-            description: "enforce the consistent use of the radix argument when using `parseInt()`",
-            category: "Best Practices",
+            description: "Enforce the consistent use of the radix argument when using `parseInt()`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/radix"
+            url: "https://eslint.org/docs/latest/rules/radix"
         },
 
+        hasSuggestions: true,
+
         schema: [
@@ -100,3 +102,4 @@ {
             missingRadix: "Missing radix parameter.",
-            invalidRadix: "Invalid radix parameter, must be an integer between 2 and 36."
+            invalidRadix: "Invalid radix parameter, must be an integer between 2 and 36.",
+            addRadixParameter10: "Add radix parameter `10` for parsing decimal numbers."
         }
@@ -107,2 +110,3 @@ },
         const mode = context.options[0] || MODE_ALWAYS;
+        const sourceCode = context.sourceCode;
 
@@ -130,3 +134,16 @@ /**
                             node,
-                            messageId: "missingRadix"
+                            messageId: "missingRadix",
+                            suggest: [
+                                {
+                                    messageId: "addRadixParameter10",
+                                    fix(fixer) {
+                                        const tokens = sourceCode.getTokens(node);
+                                        const lastToken = tokens[tokens.length - 1]; // Parenthesis.
+                                        const secondToLastToken = tokens[tokens.length - 2]; // May or may not be a comma.
+                                        const hasTrailingComma = secondToLastToken.type === "Punctuator" && secondToLastToken.value === ",";
+
+                                        return fixer.insertTextBefore(lastToken, hasTrailingComma ? " 10," : ", 10");
+                                    }
+                                }
+                            ]
                         });
@@ -153,4 +170,4 @@ }
         return {
-            "Program:exit"() {
-                const scope = context.getScope();
+            "Program:exit"(node) {
+                const scope = sourceCode.getScope(node);
                 let variable;
@@ -162,6 +179,6 @@
                     variable.references.forEach(reference => {
-                        const node = reference.identifier;
+                        const idNode = reference.identifier;
 
-                        if (astUtils.isCallee(node)) {
-                            checkArguments(node.parent);
+                        if (astUtils.isCallee(idNode)) {
+                            checkArguments(idNode.parent);
                         }
@@ -175,8 +192,8 @@ });
                     variable.references.forEach(reference => {
-                        const node = reference.identifier.parent;
-                        const maybeCallee = node.parent.type === "ChainExpression"
-                            ? node.parent
-                            : node;
+                        const parentNode = reference.identifier.parent;
+                        const maybeCallee = parentNode.parent.type === "ChainExpression"
+                            ? parentNode.parent
+                            : parentNode;
 
-                        if (isParseIntMethod(node) && astUtils.isCallee(maybeCallee)) {
+                        if (isParseIntMethod(parentNode) && astUtils.isCallee(maybeCallee)) {
                             checkArguments(maybeCallee.parent);
@@ -183,0 +200,0 @@ }

lib/rules/require-atomic-updates.js

@@ -16,2 +16,6 @@ /**
     for (const reference of scope.references) {
+        if (reference.resolved === null) {
+            continue;
+        }
+
         outReferenceMap.set(reference.identifier, reference);
@@ -79,2 +83,5 @@ }
 
+/**
+ * Represents segment information.
+ */
 class SegmentInfo {
@@ -91,4 +98,4 @@ constructor() {
     initialize(segment) {
-        const outdatedReadVariableNames = new Set();
-        const freshReadVariableNames = new Set();
+        const outdatedReadVariables = new Set();
+        const freshReadVariables = new Set();
 
@@ -99,8 +106,8 @@ for (const prevSegment of segment.prevSegments) {
             if (info) {
-                info.outdatedReadVariableNames.forEach(Set.prototype.add, outdatedReadVariableNames);
-                info.freshReadVariableNames.forEach(Set.prototype.add, freshReadVariableNames);
+                info.outdatedReadVariables.forEach(Set.prototype.add, outdatedReadVariables);
+                info.freshReadVariables.forEach(Set.prototype.add, freshReadVariables);
             }
         }
 
-        this.info.set(segment, { outdatedReadVariableNames, freshReadVariableNames });
+        this.info.set(segment, { outdatedReadVariables, freshReadVariables });
     }
@@ -111,6 +118,6 @@
      * @param {PathSegment[]} segments The segments that it read the variable on.
-     * @param {string} variableName The variable name to be read.
+     * @param {Variable} variable The variable to be read.
      * @returns {void}
      */
-    markAsRead(segments, variableName) {
+    markAsRead(segments, variable) {
         for (const segment of segments) {
@@ -120,6 +127,6 @@ const info = this.info.get(segment);
             if (info) {
-                info.freshReadVariableNames.add(variableName);
+                info.freshReadVariables.add(variable);
 
                 // If a variable is freshly read again, then it's no more out-dated.
-                info.outdatedReadVariableNames.delete(variableName);
+                info.outdatedReadVariables.delete(variable);
             }
@@ -130,3 +137,3 @@ }
     /**
-     * Move `freshReadVariableNames` to `outdatedReadVariableNames`.
+     * Move `freshReadVariables` to `outdatedReadVariables`.
      * @param {PathSegment[]} segments The segments to process.
@@ -140,4 +147,4 @@ * @returns {void}
             if (info) {
-                info.freshReadVariableNames.forEach(Set.prototype.add, info.outdatedReadVariableNames);
-                info.freshReadVariableNames.clear();
+                info.freshReadVariables.forEach(Set.prototype.add, info.outdatedReadVariables);
+                info.freshReadVariables.clear();
             }
@@ -150,10 +157,10 @@ }
      * @param {PathSegment[]} segments The current segments.
-     * @param {string} variableName The variable name to check.
+     * @param {Variable} variable The variable to check.
      * @returns {boolean} `true` if the variable is outdated on the segments.
      */
-    isOutdated(segments, variableName) {
+    isOutdated(segments, variable) {
         for (const segment of segments) {
             const info = this.info.get(segment);
 
-            if (info && info.outdatedReadVariableNames.has(variableName)) {
+            if (info && info.outdatedReadVariables.has(variable)) {
                 return true;
@@ -170,2 +177,3 @@ }
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -176,13 +184,23 @@ meta: {
         docs: {
-            description: "disallow assignments that can lead to race conditions due to usage of `await` or `yield`",
-            category: "Possible Errors",
+            description: "Disallow assignments that can lead to race conditions due to usage of `await` or `yield`",
             recommended: false,
-            url: "https://eslint.org/docs/rules/require-atomic-updates"
+            url: "https://eslint.org/docs/latest/rules/require-atomic-updates"
         },
 
         fixable: null,
-        schema: [],
 
+        schema: [{
+            type: "object",
+            properties: {
+                allowProperties: {
+                    type: "boolean",
+                    default: false
+                }
+            },
+            additionalProperties: false
+        }],
+
         messages: {
-            nonAtomicUpdate: "Possible race condition: `{{value}}` might be reassigned based on an outdated value of `{{value}}`."
+            nonAtomicUpdate: "Possible race condition: `{{value}}` might be reassigned based on an outdated value of `{{value}}`.",
+            nonAtomicObjectUpdate: "Possible race condition: `{{value}}` might be assigned based on an outdated state of `{{object}}`."
         }
@@ -192,3 +210,5 @@ },
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const allowProperties = !!context.options[0] && context.options[0].allowProperties;
+
+        const sourceCode = context.sourceCode;
         const assignmentReferences = new Map();
@@ -199,4 +219,4 @@ const segmentInfo = new SegmentInfo();
         return {
-            onCodePathStart(codePath) {
-                const scope = context.getScope();
+            onCodePathStart(codePath, node) {
+                const scope = sourceCode.getScope(node);
                 const shouldVerify =
@@ -209,3 +229,4 @@ scope.type === "function" &&
                     codePath,
-                    referenceMap: shouldVerify ? createReferenceMap(scope) : null
+                    referenceMap: shouldVerify ? createReferenceMap(scope) : null,
+                    currentSegments: new Set()
                 };
@@ -220,7 +241,21 @@ },
                 segmentInfo.initialize(segment);
+                stack.currentSegments.add(segment);
             },
 
+            onUnreachableCodePathSegmentStart(segment) {
+                stack.currentSegments.add(segment);
+            },
+
+            onUnreachableCodePathSegmentEnd(segment) {
+                stack.currentSegments.delete(segment);
+            },
+
+            onCodePathSegmentEnd(segment) {
+                stack.currentSegments.delete(segment);
+            },
+
+
             // Handle references to prepare verification.
             Identifier(node) {
-                const { codePath, referenceMap } = stack;
+                const { referenceMap } = stack;
                 const reference = referenceMap && referenceMap.get(node);
@@ -232,3 +267,2 @@
                 }
-                const name = reference.identifier.name;
                 const variable = reference.resolved;
@@ -240,3 +274,3 @@ const writeExpr = getWriteExpr(reference);
                 if (reference.isRead() && !(writeExpr && writeExpr.parent.operator === "=")) {
-                    segmentInfo.markAsRead(codePath.currentSegments, name);
+                    segmentInfo.markAsRead(stack.currentSegments, variable);
                 }
@@ -265,9 +299,8 @@
              * Verify assignments.
-             * If the reference exists in `outdatedReadVariableNames` list, report it.
+             * If the reference exists in `outdatedReadVariables` list, report it.
              */
             ":expression:exit"(node) {
-                const { codePath, referenceMap } = stack;
 
                 // referenceMap exists if this is in a resumable function scope.
-                if (!referenceMap) {
+                if (!stack.referenceMap) {
                     return;
@@ -278,3 +311,3 @@ }
                 if (node.type === "AwaitExpression" || node.type === "YieldExpression") {
-                    segmentInfo.makeOutdated(codePath.currentSegments);
+                    segmentInfo.makeOutdated(stack.currentSegments);
                 }
@@ -289,12 +322,24 @@
                     for (const reference of references) {
-                        const name = reference.identifier.name;
+                        const variable = reference.resolved;
 
-                        if (segmentInfo.isOutdated(codePath.currentSegments, name)) {
-                            context.report({
-                                node: node.parent,
-                                messageId: "nonAtomicUpdate",
-                                data: {
-                                    value: sourceCode.getText(node.parent.left)
-                                }
-                            });
+                        if (segmentInfo.isOutdated(stack.currentSegments, variable)) {
+                            if (node.parent.left === reference.identifier) {
+                                context.report({
+                                    node: node.parent,
+                                    messageId: "nonAtomicUpdate",
+                                    data: {
+                                        value: variable.name
+                                    }
+                                });
+                            } else if (!allowProperties) {
+                                context.report({
+                                    node: node.parent,
+                                    messageId: "nonAtomicObjectUpdate",
+                                    data: {
+                                        value: sourceCode.getText(node.parent.left),
+                                        object: variable.name
+                                    }
+                                });
+                            }
+
                         }
@@ -301,0 +346,0 @@ }

lib/rules/require-await.js

@@ -31,2 +31,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -37,6 +38,5 @@ meta: {
         docs: {
-            description: "disallow async functions which have no `await` expression",
-            category: "Best Practices",
+            description: "Disallow async functions which have no `await` expression",
             recommended: false,
-            url: "https://eslint.org/docs/rules/require-await"
+            url: "https://eslint.org/docs/latest/rules/require-await"
         },
@@ -52,3 +52,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         let scopeInfo = null;
@@ -55,0 +55,0 @@

lib/rules/require-jsdoc.js

 /**
  * @fileoverview Rule to check for jsdoc presence.
  * @author Gyandeep Singh
+ * @deprecated in ESLint v5.10.0
  */
 "use strict";
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -12,6 +14,5 @@ meta: {
         docs: {
-            description: "require JSDoc comments",
-            category: "Stylistic Issues",
+            description: "Require JSDoc comments",
             recommended: false,
-            url: "https://eslint.org/docs/rules/require-jsdoc"
+            url: "https://eslint.org/docs/latest/rules/require-jsdoc"
         },
@@ -64,3 +65,3 @@
     create(context) {
-        const source = context.getSourceCode();
+        const source = context.sourceCode;
         const DEFAULT_OPTIONS = {
@@ -67,0 +68,0 @@ FunctionDeclaration: true,

lib/rules/require-unicode-regexp.js

@@ -17,3 +17,5 @@ /**
     getStringIfConstant
-} = require("eslint-utils");
+} = require("@eslint-community/eslint-utils");
+const astUtils = require("./utils/ast-utils.js");
+const { isValidWithUnicodeFlag } = require("./utils/regular-expressions");
 
@@ -24,2 +26,3 @@ //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -30,9 +33,11 @@ meta: {
         docs: {
-            description: "enforce the use of `u` flag on RegExp",
-            category: "Best Practices",
+            description: "Enforce the use of `u` or `v` flag on RegExp",
             recommended: false,
-            url: "https://eslint.org/docs/rules/require-unicode-regexp"
+            url: "https://eslint.org/docs/latest/rules/require-unicode-regexp"
         },
 
+        hasSuggestions: true,
+
         messages: {
+            addUFlag: "Add the 'u' flag.",
             requireUFlag: "Use the 'u' flag."
@@ -45,2 +50,5 @@ },
     create(context) {
+
+        const sourceCode = context.sourceCode;
+
         return {
@@ -50,9 +58,22 @@ "Literal[regex]"(node) {
 
-                if (!flags.includes("u")) {
-                    context.report({ node, messageId: "requireUFlag" });
+                if (!flags.includes("u") && !flags.includes("v")) {
+                    context.report({
+                        messageId: "requireUFlag",
+                        node,
+                        suggest: isValidWithUnicodeFlag(context.languageOptions.ecmaVersion, node.regex.pattern)
+                            ? [
+                                {
+                                    fix(fixer) {
+                                        return fixer.insertTextAfter(node, "u");
+                                    },
+                                    messageId: "addUFlag"
+                                }
+                            ]
+                            : null
+                    });
                 }
             },
 
-            Program() {
-                const scope = context.getScope();
+            Program(node) {
+                const scope = sourceCode.getScope(node);
                 const tracker = new ReferenceTracker(scope);
@@ -63,8 +84,47 @@ const trackMap = {
 
-                for (const { node } of tracker.iterateGlobalReferences(trackMap)) {
-                    const flagsNode = node.arguments[1];
+                for (const { node: refNode } of tracker.iterateGlobalReferences(trackMap)) {
+                    const [patternNode, flagsNode] = refNode.arguments;
+
+                    if (patternNode && patternNode.type === "SpreadElement") {
+                        continue;
+                    }
+                    const pattern = getStringIfConstant(patternNode, scope);
                     const flags = getStringIfConstant(flagsNode, scope);
 
-                    if (!flagsNode || (typeof flags === "string" && !flags.includes("u"))) {
-                        context.report({ node, messageId: "requireUFlag" });
+                    if (!flagsNode || (typeof flags === "string" && !flags.includes("u") && !flags.includes("v"))) {
+                        context.report({
+                            messageId: "requireUFlag",
+                            node: refNode,
+                            suggest: typeof pattern === "string" && isValidWithUnicodeFlag(context.languageOptions.ecmaVersion, pattern)
+                                ? [
+                                    {
+                                        fix(fixer) {
+                                            if (flagsNode) {
+                                                if ((flagsNode.type === "Literal" && typeof flagsNode.value === "string") || flagsNode.type === "TemplateLiteral") {
+                                                    const flagsNodeText = sourceCode.getText(flagsNode);
+
+                                                    return fixer.replaceText(flagsNode, [
+                                                        flagsNodeText.slice(0, flagsNodeText.length - 1),
+                                                        flagsNodeText.slice(flagsNodeText.length - 1)
+                                                    ].join("u"));
+                                                }
+
+                                                // We intentionally don't suggest concatenating + "u" to non-literals
+                                                return null;
+                                            }
+
+                                            const penultimateToken = sourceCode.getLastToken(refNode, { skip: 1 }); // skip closing parenthesis
+
+                                            return fixer.insertTextAfter(
+                                                penultimateToken,
+                                                astUtils.isCommaToken(penultimateToken)
+                                                    ? ' "u",'
+                                                    : ', "u"'
+                                            );
+                                        },
+                                        messageId: "addUFlag"
+                                    }
+                                ]
+                                : null
+                        });
                     }
@@ -71,0 +131,0 @@ }

lib/rules/require-yield.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "require generator functions to contain `yield`",
-            category: "ECMAScript 6",
+            description: "Require generator functions to contain `yield`",
             recommended: true,
-            url: "https://eslint.org/docs/rules/require-yield"
+            url: "https://eslint.org/docs/latest/rules/require-yield"
         },
@@ -73,3 +73,2 @@
 
-                /* istanbul ignore else */
                 if (stack.length > 0) {
@@ -76,0 +75,0 @@ stack[stack.length - 1] += 1;

lib/rules/rest-spread-spacing.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "enforce spacing between rest and spread operators and their expressions",
-            category: "ECMAScript 6",
+            description: "Enforce spacing between rest and spread operators and their expressions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/rest-spread-spacing"
+            url: "https://eslint.org/docs/latest/rules/rest-spread-spacing"
         },
@@ -40,3 +40,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode(),
+        const sourceCode = context.sourceCode,
             alwaysSpace = context.options[0] === "always";
@@ -43,0 +43,0 @@

lib/rules/semi-spacing.js

@@ -14,2 +14,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -20,6 +21,5 @@ meta: {
         docs: {
-            description: "enforce consistent spacing before and after semicolons",
-            category: "Stylistic Issues",
+            description: "Enforce consistent spacing before and after semicolons",
             recommended: false,
-            url: "https://eslint.org/docs/rules/semi-spacing"
+            url: "https://eslint.org/docs/latest/rules/semi-spacing"
         },
@@ -57,3 +57,3 @@
         const config = context.options[0],
-            sourceCode = context.getSourceCode();
+            sourceCode = context.sourceCode;
         let requireSpaceBefore = false,
@@ -244,5 +244,6 @@ requireSpaceAfter = true;
                 }
-            }
+            },
+            PropertyDefinition: checkNode
         };
     }
 };

lib/rules/semi-style.js

@@ -18,15 +18,14 @@ /**
 
-const SELECTOR = `:matches(${
-    [
-        "BreakStatement", "ContinueStatement", "DebuggerStatement",
-        "DoWhileStatement", "ExportAllDeclaration",
-        "ExportDefaultDeclaration", "ExportNamedDeclaration",
-        "ExpressionStatement", "ImportDeclaration", "ReturnStatement",
-        "ThrowStatement", "VariableDeclaration"
-    ].join(",")
-})`;
+const SELECTOR = [
+    "BreakStatement", "ContinueStatement", "DebuggerStatement",
+    "DoWhileStatement", "ExportAllDeclaration",
+    "ExportDefaultDeclaration", "ExportNamedDeclaration",
+    "ExpressionStatement", "ImportDeclaration", "ReturnStatement",
+    "ThrowStatement", "VariableDeclaration", "PropertyDefinition"
+].join(",");
 
 /**
  * Get the child node list of a given node.
- * This returns `Program#body`, `BlockStatement#body`, or `SwitchCase#consequent`.
+ * This returns `BlockStatement#body`, `StaticBlock#body`, `Program#body`,
+ * `ClassBody#body`, or `SwitchCase#consequent`.
  * This is used to check whether a node is the first/last child.
@@ -39,3 +38,8 @@ * @param {Node} node A node to get child node list.
 
-    if (t === "BlockStatement" || t === "Program") {
+    if (
+        t === "BlockStatement" ||
+        t === "StaticBlock" ||
+        t === "Program" ||
+        t === "ClassBody"
+    ) {
         return node.body;
@@ -68,2 +72,3 @@ }
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -74,6 +79,5 @@ meta: {
         docs: {
-            description: "enforce location of semicolons",
-            category: "Stylistic Issues",
+            description: "Enforce location of semicolons",
             recommended: false,
-            url: "https://eslint.org/docs/rules/semi-style"
+            url: "https://eslint.org/docs/latest/rules/semi-style"
         },
@@ -90,3 +94,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const option = context.options[0] || "last";
@@ -93,0 +97,0 @@

lib/rules/semi.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "require or disallow semicolons instead of ASI",
-            category: "Stylistic Issues",
+            description: "Require or disallow semicolons instead of ASI",
             recommended: false,
-            url: "https://eslint.org/docs/rules/semi"
+            url: "https://eslint.org/docs/latest/rules/semi"
         },
@@ -63,3 +63,4 @@
                             properties: {
-                                omitLastInOneLineBlock: { type: "boolean" }
+                                omitLastInOneLineBlock: { type: "boolean" },
+                                omitLastInOneLineClassBody: { type: "boolean" }
                             },
@@ -84,7 +85,10 @@ additionalProperties: false
         const OPT_OUT_PATTERN = /^[-[(/+`]/u; // One of [(/+-`
+        const unsafeClassFieldNames = new Set(["get", "set", "static"]);
+        const unsafeClassFieldFollowers = new Set(["*", "in", "instanceof"]);
         const options = context.options[1];
         const never = context.options[0] === "never";
         const exceptOneLine = Boolean(options && options.omitLastInOneLineBlock);
+        const exceptOneLineClassBody = Boolean(options && options.omitLastInOneLineClassBody);
         const beforeStatementContinuationChars = options && options.beforeStatementContinuationChars || "any";
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -174,2 +178,51 @@ //--------------------------------------------------------------------------
         /**
+         * Checks if a given PropertyDefinition node followed by a semicolon
+         * can safely remove that semicolon. It is not to safe to remove if
+         * the class field name is "get", "set", or "static", or if
+         * followed by a generator method.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} `true` if the node cannot have the semicolon
+         *      removed.
+         */
+        function maybeClassFieldAsiHazard(node) {
+
+            if (node.type !== "PropertyDefinition") {
+                return false;
+            }
+
+            /*
+             * Computed property names and non-identifiers are always safe
+             * as they can be distinguished from keywords easily.
+             */
+            const needsNameCheck = !node.computed && node.key.type === "Identifier";
+
+            /*
+             * Certain names are problematic unless they also have a
+             * a way to distinguish between keywords and property
+             * names.
+             */
+            if (needsNameCheck && unsafeClassFieldNames.has(node.key.name)) {
+
+                /*
+                 * Special case: If the field name is `static`,
+                 * it is only valid if the field is marked as static,
+                 * so "static static" is okay but "static" is not.
+                 */
+                const isStaticStatic = node.static && node.key.name === "static";
+
+                /*
+                 * For other unsafe names, we only care if there is no
+                 * initializer. No initializer = hazard.
+                 */
+                if (!isStaticStatic && !node.value) {
+                    return true;
+                }
+            }
+
+            const followingToken = sourceCode.getTokenAfter(node);
+
+            return unsafeClassFieldFollowers.has(followingToken.value);
+        }
+
+        /**
          * Check whether a given node is on the same line with the next token.
@@ -241,6 +294,15 @@ * @param {Node} node A statement node to check.
             }
+            if (maybeClassFieldAsiHazard(node)) {
+                return false;
+            }
             if (isOnSameLineWithNextToken(node)) {
                 return false; // One liner.
             }
-            if (beforeStatementContinuationChars === "never" && !maybeAsiHazardAfter(node)) {
+
+            // continuation characters should not apply to class fields
+            if (
+                node.type !== "PropertyDefinition" &&
+                beforeStatementContinuationChars === "never" &&
+                !maybeAsiHazardAfter(node)
+            ) {
                 return true; // ASI works. This statement doesn't connect to the next.
@@ -256,7 +318,9 @@ }
         /**
-         * Checks a node to see if it's in a one-liner block statement.
+         * Checks a node to see if it's the last item in a one-liner block.
+         * Block is any `BlockStatement` or `StaticBlock` node. Block is a one-liner if its
+         * braces (and consequently everything between them) are on the same line.
          * @param {ASTNode} node The node to check.
-         * @returns {boolean} whether the node is in a one-liner block statement.
+         * @returns {boolean} whether the node is the last item in a one-liner block.
          */
-        function isOneLinerBlock(node) {
+        function isLastInOneLinerBlock(node) {
             const parent = node.parent;
@@ -268,10 +332,38 @@ const nextToken = sourceCode.getTokenAfter(node);
             }
-            return (
-                !!parent &&
-                parent.type === "BlockStatement" &&
-                parent.loc.start.line === parent.loc.end.line
-            );
+
+            if (parent.type === "BlockStatement") {
+                return parent.loc.start.line === parent.loc.end.line;
+            }
+
+            if (parent.type === "StaticBlock") {
+                const openingBrace = sourceCode.getFirstToken(parent, { skip: 1 }); // skip the `static` token
+
+                return openingBrace.loc.start.line === parent.loc.end.line;
+            }
+
+            return false;
         }
 
         /**
+         * Checks a node to see if it's the last item in a one-liner `ClassBody` node.
+         * ClassBody is a one-liner if its braces (and consequently everything between them) are on the same line.
+         * @param {ASTNode} node The node to check.
+         * @returns {boolean} whether the node is the last item in a one-liner ClassBody.
+         */
+        function isLastInOneLinerClassBody(node) {
+            const parent = node.parent;
+            const nextToken = sourceCode.getTokenAfter(node);
+
+            if (!nextToken || nextToken.value !== "}") {
+                return false;
+            }
+
+            if (parent.type === "ClassBody") {
+                return parent.loc.start.line === parent.loc.end.line;
+            }
+
+            return false;
+        }
+
+        /**
          * Checks a node to see if it's followed by a semicolon.
@@ -287,11 +379,17 @@ * @param {ASTNode} node The node to check.
                     report(node, true);
-                } else if (!isSemi && beforeStatementContinuationChars === "always" && maybeAsiHazardBefore(sourceCode.getTokenAfter(node))) {
+                } else if (
+                    !isSemi && beforeStatementContinuationChars === "always" &&
+                    node.type !== "PropertyDefinition" &&
+                    maybeAsiHazardBefore(sourceCode.getTokenAfter(node))
+                ) {
                     report(node);
                 }
             } else {
-                const oneLinerBlock = (exceptOneLine && isOneLinerBlock(node));
+                const oneLinerBlock = (exceptOneLine && isLastInOneLinerBlock(node));
+                const oneLinerClassBody = (exceptOneLineClassBody && isLastInOneLinerClassBody(node));
+                const oneLinerBlockOrClassBody = oneLinerBlock || oneLinerClassBody;
 
-                if (isSemi && oneLinerBlock) {
+                if (isSemi && oneLinerBlockOrClassBody) {
                     report(node, true);
-                } else if (!isSemi && !oneLinerBlock) {
+                } else if (!isSemi && !oneLinerBlockOrClassBody) {
                     report(node);
@@ -341,3 +439,4 @@ }
                 }
-            }
+            },
+            PropertyDefinition: checkForSemicolon
         };
@@ -344,0 +443,0 @@

lib/rules/sort-imports.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "enforce sorted import declarations within modules",
-            category: "ECMAScript 6",
+            description: "Enforce sorted import declarations within modules",
             recommended: false,
-            url: "https://eslint.org/docs/rules/sort-imports"
+            url: "https://eslint.org/docs/latest/rules/sort-imports"
         },
@@ -76,3 +76,3 @@
             allowSeparatedGroups = configuration.allowSeparatedGroups || false,
-            sourceCode = context.getSourceCode();
+            sourceCode = context.sourceCode;
         let previousDeclaration = null;
@@ -79,0 +79,0 @@

lib/rules/sort-keys.js

@@ -78,2 +78,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -84,6 +85,5 @@ meta: {
         docs: {
-            description: "require object keys to be sorted",
-            category: "Stylistic Issues",
+            description: "Require object keys to be sorted",
             recommended: false,
-            url: "https://eslint.org/docs/rules/sort-keys"
+            url: "https://eslint.org/docs/latest/rules/sort-keys"
         },
@@ -110,2 +110,6 @@
                         default: 2
+                    },
+                    allowLineSeparatedGroups: {
+                        type: "boolean",
+                        default: false
                     }
@@ -130,2 +134,3 @@ },
         const minKeys = options && options.minKeys;
+        const allowLineSeparatedGroups = options && options.allowLineSeparatedGroups || false;
         const isValidOrder = isValidOrders[
@@ -137,2 +142,3 @@ order + (insensitive ? "I" : "") + (natural ? "N" : "")
         let stack = null;
+        const sourceCode = context.sourceCode;
 
@@ -143,2 +149,4 @@ return {
                     upper: stack,
+                    prevNode: null,
+                    prevBlankLine: false,
                     prevName: null,
@@ -168,2 +176,32 @@ numKeys: node.properties.length
 
+                // Get tokens between current node and previous node
+                const tokens = stack.prevNode && sourceCode
+                    .getTokensBetween(stack.prevNode, node, { includeComments: true });
+
+                let isBlankLineBetweenNodes = stack.prevBlankLine;
+
+                if (tokens) {
+
+                    // check blank line between tokens
+                    tokens.forEach((token, index) => {
+                        const previousToken = tokens[index - 1];
+
+                        if (previousToken && (token.loc.start.line - previousToken.loc.end.line > 1)) {
+                            isBlankLineBetweenNodes = true;
+                        }
+                    });
+
+                    // check blank line between the current node and the last token
+                    if (!isBlankLineBetweenNodes && (node.loc.start.line - tokens[tokens.length - 1].loc.end.line > 1)) {
+                        isBlankLineBetweenNodes = true;
+                    }
+
+                    // check blank line between the first token and the previous node
+                    if (!isBlankLineBetweenNodes && (tokens[0].loc.start.line - stack.prevNode.loc.end.line > 1)) {
+                        isBlankLineBetweenNodes = true;
+                    }
+                }
+
+                stack.prevNode = node;
+
                 if (thisName !== null) {
@@ -173,2 +211,7 @@ stack.prevName = thisName;
 
+                if (allowLineSeparatedGroups && isBlankLineBetweenNodes) {
+                    stack.prevBlankLine = thisName === null;
+                    return;
+                }
+
                 if (prevName === null || thisName === null || numKeys < minKeys) {
@@ -175,0 +218,0 @@ return;

lib/rules/sort-vars.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "require variables within the same declaration block to be sorted",
-            category: "Stylistic Issues",
+            description: "Require variables within the same declaration block to be sorted",
             recommended: false,
-            url: "https://eslint.org/docs/rules/sort-vars"
+            url: "https://eslint.org/docs/latest/rules/sort-vars"
         },
@@ -49,3 +49,3 @@
             ignoreCase = configuration.ignoreCase || false,
-            sourceCode = context.getSourceCode();
+            sourceCode = context.sourceCode;
 
@@ -52,0 +52,0 @@ return {

lib/rules/space-before-blocks.js

@@ -37,2 +37,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -43,6 +44,5 @@ meta: {
         docs: {
-            description: "enforce consistent spacing before blocks",
-            category: "Stylistic Issues",
+            description: "Enforce consistent spacing before blocks",
             recommended: false,
-            url: "https://eslint.org/docs/rules/space-before-blocks"
+            url: "https://eslint.org/docs/latest/rules/space-before-blocks"
         },
@@ -85,3 +85,3 @@
         const config = context.options[0],
-            sourceCode = context.getSourceCode();
+            sourceCode = context.sourceCode;
         let alwaysFunctions = true,
@@ -114,2 +114,3 @@ alwaysKeywords = true,
          * - `keyword-spacing` checks spaces after keywords in certain contexts.
+         * - `switch-colon-spacing` checks spaces after `:` of switch cases.
          * @param {Token} precedingToken first token before the block.
@@ -120,4 +121,15 @@ * @param {ASTNode|Token} node `BlockStatement` node or `{` token of a `SwitchStatement` node.
         function isConflicted(precedingToken, node) {
-            return astUtils.isArrowToken(precedingToken) ||
-                astUtils.isKeywordToken(precedingToken) && !isFunctionBody(node);
+            return (
+                astUtils.isArrowToken(precedingToken) ||
+                (
+                    astUtils.isKeywordToken(precedingToken) &&
+                    !isFunctionBody(node)
+                ) ||
+                (
+                    astUtils.isColonToken(precedingToken) &&
+                    node.parent &&
+                    node.parent.type === "SwitchCase" &&
+                    precedingToken === astUtils.getSwitchCaseColonToken(node.parent, sourceCode)
+                )
+            );
         }
@@ -124,0 +136,0 @@

lib/rules/space-before-function-paren.js

@@ -17,2 +17,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +24,5 @@ meta: {
         docs: {
-            description: "enforce consistent spacing before `function` definition opening parenthesis",
-            category: "Stylistic Issues",
+            description: "Enforce consistent spacing before `function` definition opening parenthesis",
             recommended: false,
-            url: "https://eslint.org/docs/rules/space-before-function-paren"
+            url: "https://eslint.org/docs/latest/rules/space-before-function-paren"
         },
@@ -64,3 +64,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const baseConfig = typeof context.options[0] === "string" ? context.options[0] : "always";
@@ -67,0 +67,0 @@ const overrideConfig = typeof context.options[0] === "object" ? context.options[0] : {};

lib/rules/space-in-parens.js

@@ -13,2 +13,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -19,6 +20,5 @@ meta: {
         docs: {
-            description: "enforce consistent spacing inside parentheses",
-            category: "Stylistic Issues",
+            description: "Enforce consistent spacing inside parentheses",
             recommended: false,
-            url: "https://eslint.org/docs/rules/space-in-parens"
+            url: "https://eslint.org/docs/latest/rules/space-in-parens"
         },
@@ -107,3 +107,3 @@
         //--------------------------------------------------------------------------
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -110,0 +110,0 @@ /**

lib/rules/space-infix-ops.js

@@ -7,2 +7,4 @@ /**
 
+const { isEqToken } = require("./utils/ast-utils");
+
 //------------------------------------------------------------------------------
@@ -12,2 +14,3 @@ // Rule Definition
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +21,5 @@ meta: {
         docs: {
-            description: "require spacing around infix operators",
-            category: "Stylistic Issues",
+            description: "Require spacing around infix operators",
             recommended: false,
-            url: "https://eslint.org/docs/rules/space-infix-ops"
+            url: "https://eslint.org/docs/latest/rules/space-infix-ops"
         },
@@ -47,3 +49,3 @@
         const int32Hint = context.options[0] ? context.options[0].int32Hint === true : false;
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -171,3 +173,25 @@ /**
             ConditionalExpression: checkConditional,
-            VariableDeclarator: checkVar
+            VariableDeclarator: checkVar,
+
+            PropertyDefinition(node) {
+                if (!node.value) {
+                    return;
+                }
+
+                /*
+                 * Because of computed properties and type annotations, some
+                 * tokens may exist between `node.key` and `=`.
+                 * Therefore, find the `=` from the right.
+                 */
+                const operatorToken = sourceCode.getTokenBefore(node.value, isEqToken);
+                const leftToken = sourceCode.getTokenBefore(operatorToken);
+                const rightToken = sourceCode.getTokenAfter(operatorToken);
+
+                if (
+                    !sourceCode.isSpaceBetweenTokens(leftToken, operatorToken) ||
+                    !sourceCode.isSpaceBetweenTokens(operatorToken, rightToken)
+                ) {
+                    report(node, operatorToken);
+                }
+            }
         };
@@ -174,0 +198,0 @@

lib/rules/space-unary-ops.js

@@ -17,2 +17,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +24,5 @@ meta: {
         docs: {
-            description: "enforce consistent spacing before or after unary operators",
-            category: "Stylistic Issues",
+            description: "Enforce consistent spacing before or after unary operators",
             recommended: false,
-            url: "https://eslint.org/docs/rules/space-unary-ops"
+            url: "https://eslint.org/docs/latest/rules/space-unary-ops"
         },
@@ -67,3 +67,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -70,0 +70,0 @@ //--------------------------------------------------------------------------

lib/rules/spaced-comment.js

@@ -7,3 +7,3 @@ /**
 
-const lodash = require("lodash");
+const escapeRegExp = require("escape-string-regexp");
 const astUtils = require("./utils/ast-utils");
@@ -21,3 +21,3 @@
 function escape(s) {
-    return `(?:${lodash.escapeRegExp(s)})`;
+    return `(?:${escapeRegExp(s)})`;
 }
@@ -44,3 +44,3 @@
     // `*` is a marker for JSDoc comments.
-    if (markers.indexOf("*") === -1) {
+    if (!markers.includes("*")) {
         return markers.concat("*");
@@ -152,2 +152,3 @@ }
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -158,6 +159,5 @@ meta: {
         docs: {
-            description: "enforce consistent spacing after the `//` or `/*` in a comment",
-            category: "Stylistic Issues",
+            description: "Enforce consistent spacing after the `//` or `/*` in a comment",
             recommended: false,
-            url: "https://eslint.org/docs/rules/spaced-comment"
+            url: "https://eslint.org/docs/latest/rules/spaced-comment"
         },
@@ -243,3 +243,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -246,0 +246,0 @@ // Unless the first option is never, require a space

lib/rules/strict.js

@@ -66,2 +66,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -72,6 +73,5 @@ meta: {
         docs: {
-            description: "require or disallow strict mode directives",
-            category: "Strict Mode",
+            description: "Require or disallow strict mode directives",
             recommended: false,
-            url: "https://eslint.org/docs/rules/strict"
+            url: "https://eslint.org/docs/latest/rules/strict"
         },
@@ -110,3 +110,3 @@
         } else if (mode === "safe") {
-            mode = ecmaFeatures.globalReturn ? "global" : "function";
+            mode = ecmaFeatures.globalReturn || context.languageOptions.sourceType === "commonjs" ? "global" : "function";
         }
@@ -113,0 +113,0 @@

lib/rules/switch-colon-spacing.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "enforce spacing around colons of switch statements",
-            category: "Stylistic Issues",
+            description: "Enforce spacing around colons of switch statements",
             recommended: false,
-            url: "https://eslint.org/docs/rules/switch-colon-spacing"
+            url: "https://eslint.org/docs/latest/rules/switch-colon-spacing"
         },
@@ -51,3 +51,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const options = context.options[0] || {};
@@ -58,14 +58,2 @@ const beforeSpacing = options.before === true; // false by default
         /**
-         * Get the colon token of the given SwitchCase node.
-         * @param {ASTNode} node The SwitchCase node to get.
-         * @returns {Token} The colon token of the node.
-         */
-        function getColonToken(node) {
-            if (node.test) {
-                return sourceCode.getTokenAfter(node.test, astUtils.isColonToken);
-            }
-            return sourceCode.getFirstToken(node, 1);
-        }
-
-        /**
          * Check whether the spacing between the given 2 tokens is valid or not.
@@ -122,3 +110,3 @@ * @param {Token} left The left token to check.
             SwitchCase(node) {
-                const colonToken = getColonToken(node);
+                const colonToken = astUtils.getSwitchCaseColonToken(node, sourceCode);
                 const beforeToken = sourceCode.getTokenBefore(colonToken);
@@ -125,0 +113,0 @@ const afterToken = sourceCode.getTokenAfter(colonToken);

lib/rules/symbol-description.js

@@ -19,2 +19,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -25,6 +26,5 @@ meta: {
         docs: {
-            description: "require symbol descriptions",
-            category: "ECMAScript 6",
+            description: "Require symbol descriptions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/symbol-description"
+            url: "https://eslint.org/docs/latest/rules/symbol-description"
         },
@@ -40,2 +40,4 @@ fixable: null,
 
+        const sourceCode = context.sourceCode;
+
         /**
@@ -57,4 +59,4 @@ * Reports if node does not conform the rule in case rule is set to
         return {
-            "Program:exit"() {
-                const scope = context.getScope();
+            "Program:exit"(node) {
+                const scope = sourceCode.getScope(node);
                 const variable = astUtils.getVariableByName(scope, "Symbol");
@@ -64,6 +66,6 @@
                     variable.references.forEach(reference => {
-                        const node = reference.identifier;
+                        const idNode = reference.identifier;
 
-                        if (astUtils.isCallee(node)) {
-                            checkArgument(node.parent);
+                        if (astUtils.isCallee(idNode)) {
+                            checkArgument(idNode.parent);
                         }
@@ -70,0 +72,0 @@ });

lib/rules/template-curly-spacing.js

@@ -18,2 +18,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -24,6 +25,5 @@ meta: {
         docs: {
-            description: "require or disallow spacing around embedded expressions of template strings",
-            category: "ECMAScript 6",
+            description: "Require or disallow spacing around embedded expressions of template strings",
             recommended: false,
-            url: "https://eslint.org/docs/rules/template-curly-spacing"
+            url: "https://eslint.org/docs/latest/rules/template-curly-spacing"
         },
@@ -45,3 +45,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
         const always = context.options[0] === "always";
@@ -48,0 +48,0 @@

lib/rules/template-tag-spacing.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "require or disallow spacing between template tags and their literals",
-            category: "Stylistic Issues",
+            description: "Require or disallow spacing between template tags and their literals",
             recommended: false,
-            url: "https://eslint.org/docs/rules/template-tag-spacing"
+            url: "https://eslint.org/docs/latest/rules/template-tag-spacing"
         },
@@ -38,3 +38,3 @@
         const never = context.options[0] !== "always";
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -41,0 +41,0 @@ /**

lib/rules/unicode-bom.js

@@ -11,2 +11,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,6 +18,5 @@ meta: {
         docs: {
-            description: "require or disallow Unicode byte order mark (BOM)",
-            category: "Stylistic Issues",
+            description: "Require or disallow Unicode byte order mark (BOM)",
             recommended: false,
-            url: "https://eslint.org/docs/rules/unicode-bom"
+            url: "https://eslint.org/docs/latest/rules/unicode-bom"
         },
@@ -47,3 +47,3 @@
 
-                const sourceCode = context.getSourceCode(),
+                const sourceCode = context.sourceCode,
                     location = { column: 0, line: 1 },
@@ -50,0 +50,0 @@ requireBOM = context.options[0] || "never";

lib/rules/use-isnan.js

@@ -24,3 +24,6 @@ /**
 function isNaNIdentifier(node) {
-    return Boolean(node) && node.type === "Identifier" && node.name === "NaN";
+    return Boolean(node) && (
+        astUtils.isSpecificId(node, "NaN") ||
+        astUtils.isSpecificMemberAccess(node, "Number", "NaN")
+    );
 }
@@ -32,2 +35,3 @@
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -38,6 +42,5 @@ meta: {
         docs: {
-            description: "require calls to `isNaN()` when checking for `NaN`",
-            category: "Possible Errors",
+            description: "Require calls to `isNaN()` when checking for `NaN`",
             recommended: true,
-            url: "https://eslint.org/docs/rules/use-isnan"
+            url: "https://eslint.org/docs/latest/rules/use-isnan"
         },
@@ -107,3 +110,3 @@
         /**
-         * Checks the the given `CallExpression` node for `.indexOf(NaN)` and `.lastIndexOf(NaN)`.
+         * Checks the given `CallExpression` node for `.indexOf(NaN)` and `.lastIndexOf(NaN)`.
          * @param {ASTNode} node The node to check.
@@ -110,0 +113,0 @@ * @returns {void}

lib/rules/utils/lazy-loading-rule-map.js

@@ -17,6 +17,6 @@ /**
  *     ["semi", () => require("semi")],
- *     ["no-unused-vars", () => require("no-unused-vars")],
- * ])
+ *     ["no-unused-vars", () => require("no-unused-vars")]
+ * ]);
  *
- * rules.get("semi") // call `() => require("semi")` here.
+ * rules.get("semi"); // call `() => require("semi")` here.
  *
@@ -23,0 +23,0 @@ * @extends {Map<string, () => Rule>}

lib/rules/valid-jsdoc.js

 /**
  * @fileoverview Validates JSDoc comments are syntactically correct
  * @author Nicholas C. Zakas
+ * @deprecated in ESLint v5.10.0
  */
@@ -17,2 +18,3 @@ "use strict";
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -23,6 +25,5 @@ meta: {
         docs: {
-            description: "enforce valid JSDoc comments",
-            category: "Possible Errors",
+            description: "Enforce valid JSDoc comments",
             recommended: false,
-            url: "https://eslint.org/docs/rules/valid-jsdoc"
+            url: "https://eslint.org/docs/latest/rules/valid-jsdoc"
         },
@@ -100,3 +101,3 @@
             prefer = options.prefer || {},
-            sourceCode = context.getSourceCode(),
+            sourceCode = context.sourceCode,
 
@@ -410,3 +411,3 @@ // these both default to true, so you have to explicitly make them false
                         });
-                    } else if (param.name.indexOf(".") === -1) {
+                    } else if (!param.name.includes(".")) {
                         paramTagsByName[param.name] = param;
@@ -413,0 +414,0 @@ }

lib/rules/valid-typeof.js

@@ -8,5 +8,12 @@ /**
 //------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
 // Rule Definition
 //------------------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -17,8 +24,9 @@ meta: {
         docs: {
-            description: "enforce comparing `typeof` expressions against valid strings",
-            category: "Possible Errors",
+            description: "Enforce comparing `typeof` expressions against valid strings",
             recommended: true,
-            url: "https://eslint.org/docs/rules/valid-typeof"
+            url: "https://eslint.org/docs/latest/rules/valid-typeof"
         },
 
+        hasSuggestions: true,
+
         schema: [
@@ -38,3 +46,4 @@ {
             invalidValue: "Invalid typeof comparison value.",
-            notString: "Typeof comparisons should be to string literals."
+            notString: "Typeof comparisons should be to string literals.",
+            suggestString: 'Use `"{{type}}"` instead of `{{type}}`.'
         }
@@ -45,8 +54,23 @@ },
 
-        const VALID_TYPES = ["symbol", "undefined", "object", "boolean", "number", "string", "function", "bigint"],
-            OPERATORS = ["==", "===", "!=", "!=="];
-
+        const VALID_TYPES = new Set(["symbol", "undefined", "object", "boolean", "number", "string", "function", "bigint"]),
+            OPERATORS = new Set(["==", "===", "!=", "!=="]);
+        const sourceCode = context.sourceCode;
         const requireStringLiterals = context.options[0] && context.options[0].requireStringLiterals;
 
+        let globalScope;
+
         /**
+         * Checks whether the given node represents a reference to a global variable that is not declared in the source code.
+         * These identifiers will be allowed, as it is assumed that user has no control over the names of external global variables.
+         * @param {ASTNode} node `Identifier` node to check.
+         * @returns {boolean} `true` if the node is a reference to a global variable.
+         */
+        function isReferenceToGlobalVariable(node) {
+            const variable = globalScope.set.get(node.name);
+
+            return variable && variable.defs.length === 0 &&
+                variable.references.some(ref => ref.identifier === node);
+        }
+
+        /**
          * Determines whether a node is a typeof expression.
@@ -66,15 +90,33 @@ * @param {ASTNode} node The node
 
+            Program(node) {
+                globalScope = sourceCode.getScope(node);
+            },
+
             UnaryExpression(node) {
                 if (isTypeofExpression(node)) {
-                    const parent = context.getAncestors().pop();
+                    const { parent } = node;
 
-                    if (parent.type === "BinaryExpression" && OPERATORS.indexOf(parent.operator) !== -1) {
+                    if (parent.type === "BinaryExpression" && OPERATORS.has(parent.operator)) {
                         const sibling = parent.left === node ? parent.right : parent.left;
 
-                        if (sibling.type === "Literal" || sibling.type === "TemplateLiteral" && !sibling.expressions.length) {
+                        if (sibling.type === "Literal" || astUtils.isStaticTemplateLiteral(sibling)) {
                             const value = sibling.type === "Literal" ? sibling.value : sibling.quasis[0].value.cooked;
 
-                            if (VALID_TYPES.indexOf(value) === -1) {
+                            if (!VALID_TYPES.has(value)) {
                                 context.report({ node: sibling, messageId: "invalidValue" });
                             }
+                        } else if (sibling.type === "Identifier" && sibling.name === "undefined" && isReferenceToGlobalVariable(sibling)) {
+                            context.report({
+                                node: sibling,
+                                messageId: requireStringLiterals ? "notString" : "invalidValue",
+                                suggest: [
+                                    {
+                                        messageId: "suggestString",
+                                        data: { type: "undefined" },
+                                        fix(fixer) {
+                                            return fixer.replaceText(sibling, '"undefined"');
+                                        }
+                                    }
+                                ]
+                            });
                         } else if (requireStringLiterals && !isTypeofExpression(sibling)) {
@@ -81,0 +123,0 @@ context.report({ node: sibling, messageId: "notString" });

lib/rules/vars-on-top.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "require `var` declarations be placed at the top of their containing scope",
-            category: "Best Practices",
+            description: "Require `var` declarations be placed at the top of their containing scope",
             recommended: false,
-            url: "https://eslint.org/docs/rules/vars-on-top"
+            url: "https://eslint.org/docs/latest/rules/vars-on-top"
         },
@@ -37,4 +37,4 @@
 
-        // eslint-disable-next-line jsdoc/require-description
         /**
+         * Has AST suggesting a directive.
          * @param {ASTNode} node any node
@@ -84,6 +84,8 @@ * @returns {boolean} whether the given node structurally represents a directive
 
-            // skip over directives
-            for (; i < l; ++i) {
-                if (!looksLikeDirective(statements[i]) && !looksLikeImport(statements[i])) {
-                    break;
+            // Skip over directives and imports. Static blocks don't have either.
+            if (node.parent.type !== "StaticBlock") {
+                for (; i < l; ++i) {
+                    if (!looksLikeDirective(statements[i]) && !looksLikeImport(statements[i])) {
+                        break;
+                    }
                 }
@@ -119,12 +121,23 @@ }
          * @param {ASTNode} node The node to check
-         * @param {ASTNode} parent Parent of the node
-         * @param {ASTNode} grandParent Parent of the node's parent
          * @returns {void}
          */
-        function blockScopeVarCheck(node, parent, grandParent) {
-            if (!(/Function/u.test(grandParent.type) &&
-                    parent.type === "BlockStatement" &&
-                    isVarOnTop(node, parent.body))) {
-                context.report({ node, messageId: "top" });
+        function blockScopeVarCheck(node) {
+            const { parent } = node;
+
+            if (
+                parent.type === "BlockStatement" &&
+                /Function/u.test(parent.parent.type) &&
+                isVarOnTop(node, parent.body)
+            ) {
+                return;
             }
+
+            if (
+                parent.type === "StaticBlock" &&
+                isVarOnTop(node, parent.body)
+            ) {
+                return;
+            }
+
+            context.report({ node, messageId: "top" });
         }
@@ -143,3 +156,3 @@
                 } else {
-                    blockScopeVarCheck(node, node.parent, node.parent.parent);
+                    blockScopeVarCheck(node);
                 }
@@ -146,0 +159,0 @@ }

lib/rules/wrap-iife.js

@@ -13,3 +13,3 @@ /**
 const astUtils = require("./utils/ast-utils");
-const eslintUtils = require("eslint-utils");
+const eslintUtils = require("@eslint-community/eslint-utils");
 
@@ -41,2 +41,3 @@ //----------------------------------------------------------------------
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -47,6 +48,5 @@ meta: {
         docs: {
-            description: "require parentheses around immediate `function` invocations",
-            category: "Best Practices",
+            description: "Require parentheses around immediate `function` invocations",
             recommended: false,
-            url: "https://eslint.org/docs/rules/wrap-iife"
+            url: "https://eslint.org/docs/latest/rules/wrap-iife"
         },
@@ -83,3 +83,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -86,0 +86,0 @@ /**

lib/rules/wrap-regex.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "require parenthesis around regex literals",
-            category: "Stylistic Issues",
+            description: "Require parenthesis around regex literals",
             recommended: false,
-            url: "https://eslint.org/docs/rules/wrap-regex"
+            url: "https://eslint.org/docs/latest/rules/wrap-regex"
         },
@@ -34,3 +34,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -46,6 +46,5 @@ return {
                     const afterToken = sourceCode.getTokenAfter(node);
-                    const ancestors = context.getAncestors();
-                    const grandparent = ancestors[ancestors.length - 1];
+                    const { parent } = node;
 
-                    if (grandparent.type === "MemberExpression" && grandparent.object === node &&
+                    if (parent.type === "MemberExpression" && parent.object === node &&
                         !(beforeToken && beforeToken.value === "(" && afterToken && afterToken.value === ")")) {
@@ -52,0 +51,0 @@ context.report({

lib/rules/yield-star-spacing.js

@@ -12,2 +12,3 @@ /**
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -18,6 +19,5 @@ meta: {
         docs: {
-            description: "require or disallow spacing around the `*` in `yield*` expressions",
-            category: "ECMAScript 6",
+            description: "Require or disallow spacing around the `*` in `yield*` expressions",
             recommended: false,
-            url: "https://eslint.org/docs/rules/yield-star-spacing"
+            url: "https://eslint.org/docs/latest/rules/yield-star-spacing"
         },
@@ -53,3 +53,3 @@
     create(context) {
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -56,0 +56,0 @@ const mode = (function(option) {

lib/rules/yoda.js

@@ -42,3 +42,3 @@ /**
 function isRangeTestOperator(operator) {
-    return ["<", "<="].indexOf(operator) >= 0;
+    return ["<", "<="].includes(operator);
 }
@@ -63,11 +63,2 @@
 /**
- * Determines whether a node is a Template Literal which can be determined statically.
- * @param {ASTNode} node Node to test
- * @returns {boolean} True if the node is a Template Literal without expression.
- */
-function isStaticTemplateLiteral(node) {
-    return node.type === "TemplateLiteral" && node.expressions.length === 0;
-}
-
-/**
  * Determines whether a non-Literal node should be treated as a single Literal node.
@@ -78,3 +69,3 @@ * @param {ASTNode} node Node to test
 function looksLikeLiteral(node) {
-    return isNegativeNumericLiteral(node) || isStaticTemplateLiteral(node);
+    return isNegativeNumericLiteral(node) || astUtils.isStaticTemplateLiteral(node);
 }
@@ -106,3 +97,3 @@
 
-    if (isStaticTemplateLiteral(node)) {
+    if (astUtils.isStaticTemplateLiteral(node)) {
         return {
@@ -122,2 +113,3 @@ type: "Literal",
 
+/** @type {import('../shared/types').Rule} */
 module.exports = {
@@ -128,6 +120,5 @@ meta: {
         docs: {
-            description: 'require or disallow "Yoda" conditions',
-            category: "Best Practices",
+            description: 'Require or disallow "Yoda" conditions',
             recommended: false,
-            url: "https://eslint.org/docs/rules/yoda"
+            url: "https://eslint.org/docs/latest/rules/yoda"
         },
@@ -171,3 +162,3 @@
 
-        const sourceCode = context.getSourceCode();
+        const sourceCode = context.sourceCode;
 
@@ -353,3 +344,3 @@ /**
                     isComparisonOperator(node.operator) &&
-                    !(exceptRange && isRangeTest(context.getAncestors().pop()))
+                    !(exceptRange && isRangeTest(node.parent))
                 ) {
@@ -356,0 +347,0 @@ context.report({

lib/shared/ajv.js

@@ -30,3 +30,3 @@ /**
     ajv.addMetaSchema(metaSchema);
-    // eslint-disable-next-line no-underscore-dangle
+    // eslint-disable-next-line no-underscore-dangle -- Ajv's API
     ajv._opts.defaultMeta = metaSchema.id;
@@ -33,0 +33,0 @@

lib/shared/config-validator.js

@@ -27,5 +27,9 @@ /*
     configSchema = require("../../conf/config-schema"),
-    BuiltInEnvironments = require("@eslint/eslintrc/conf/environments"),
     BuiltInRules = require("../rules"),
-    ConfigOps = require("@eslint/eslintrc/lib/shared/config-ops"),
+    {
+        Legacy: {
+            ConfigOps,
+            environments: BuiltInEnvironments
+        }
+    } = require("@eslint/eslintrc"),
     { emitDeprecationWarning } = require("./deprecation-warnings");
@@ -84,2 +88,3 @@
  * @param {options} options The given options for the rule.
+ * @throws {Error} Wrong severity value.
  * @returns {number|string} The rule's severity value
@@ -103,2 +108,3 @@ */
  * @param {Array} localOptions The options for the rule, excluding severity
+ * @throws {Error} Any rule validation errors.
  * @returns {void}
@@ -134,2 +140,3 @@ */
  * no source is prepended to the message.
+ * @throws {Error} Upon any bad rule configuration.
  * @returns {void}
@@ -159,3 +166,3 @@ */
  * @param {string} source The name of the configuration source to report in any errors.
- * @param {function(envId:string): Object} [getAdditionalEnv] A map from strings to loaded environments.
+ * @param {(envId:string) => Object} [getAdditionalEnv] A map from strings to loaded environments.
  * @returns {void}
@@ -189,3 +196,3 @@ */
  * @param {string} source The name of the configuration source to report in any errors.
- * @param {function(ruleId:string): Object} getAdditionalRule A map from strings to loaded rules
+ * @param {(ruleId:string) => Object} getAdditionalRule A map from strings to loaded rules
  * @returns {void}
@@ -234,3 +241,4 @@ */
  * @param {string} source The name of config file.
- * @param {function(id:string): Processor} getProcessor The getter of defined processors.
+ * @param {(id:string) => Processor} getProcessor The getter of defined processors.
+ * @throws {Error} For invalid processor configuration.
  * @returns {void}
@@ -274,2 +282,3 @@ */
  * @param {string} source The name of the configuration source to report in any errors.
+ * @throws {Error} For any config invalid per the schema.
  * @returns {void}
@@ -293,4 +302,4 @@ */
  * @param {string} source The name of the configuration source to report in any errors.
- * @param {function(ruleId:string): Object} [getAdditionalRule] A map from strings to loaded rules.
- * @param {function(envId:string): Object} [getAdditionalEnv] A map from strings to loaded envs.
+ * @param {(ruleId:string) => Object} [getAdditionalRule] A map from strings to loaded rules.
+ * @param {(envId:string) => Object} [getAdditionalEnv] A map from strings to loaded envs.
  * @returns {void}
@@ -297,0 +306,0 @@ */

lib/shared/deprecation-warnings.js

@@ -12,3 +12,2 @@ /**
 const path = require("path");
-const lodash = require("lodash");
 
@@ -22,12 +21,7 @@ //------------------------------------------------------------------------------
     ESLINT_LEGACY_ECMAFEATURES:
-        "The 'ecmaFeatures' config file property is deprecated and has no effect.",
-    ESLINT_PERSONAL_CONFIG_LOAD:
-        "'~/.eslintrc.*' config files have been deprecated. " +
-        "Please use a config file per project or the '--config' option.",
-    ESLINT_PERSONAL_CONFIG_SUPPRESS:
-        "'~/.eslintrc.*' config files have been deprecated. " +
-        "Please remove it or add 'root:true' to the config files in your " +
-        "projects in order to avoid loading '~/.eslintrc.*' accidentally."
+        "The 'ecmaFeatures' config file property is deprecated and has no effect."
 };
 
+const sourceFileErrorCache = new Set();
+
 /**
@@ -41,3 +35,11 @@ * Emits a deprecation warning containing a given filepath. A new deprecation warning is emitted
  */
-const emitDeprecationWarning = lodash.memoize((source, errorCode) => {
+function emitDeprecationWarning(source, errorCode) {
+    const cacheKey = JSON.stringify({ source, errorCode });
+
+    if (sourceFileErrorCache.has(cacheKey)) {
+        return;
+    }
+
+    sourceFileErrorCache.add(cacheKey);
+
     const rel = path.relative(process.cwd(), source);
@@ -51,3 +53,3 @@ const message = deprecationWarningMessages[errorCode];
     );
-}, (...args) => JSON.stringify(args));
+}
 
@@ -54,0 +56,0 @@ //------------------------------------------------------------------------------

lib/shared/logging.js

@@ -8,5 +8,5 @@ /**
 
-/* eslint no-console: "off" */
+/* eslint no-console: "off" -- Logging util */
 
-/* istanbul ignore next */
+/* c8 ignore next */
 module.exports = {
@@ -13,0 +13,0 @@

lib/shared/relative-module-resolver.js

@@ -20,11 +20,4 @@ /*
 
-const Module = require("module");
+const { createRequire } = require("module");
 
-/*
- * `Module.createRequire` is added in v12.2.0. It supports URL as well.
- * We only support the case where the argument is a filepath, not a URL.
- */
-// eslint-disable-next-line node/no-unsupported-features/node-builtins, node/no-deprecated-api
-const createRequire = Module.createRequire || Module.createRequireFromPath;
-
 module.exports = {
@@ -37,2 +30,3 @@
      * a file rather than a directory, but the file need not actually exist.
+     * @throws {Error} Any error from `module.createRequire` or its `resolve`.
      * @returns {string} The absolute path that would result from calling `require.resolve(moduleName)` in a file located at `relativeToPath`
@@ -39,0 +33,0 @@ */

lib/shared/runtime-info.js

@@ -14,3 +14,3 @@ /**
 const spawn = require("cross-spawn");
-const { isEmpty } = require("lodash");
+const os = require("os");
 const log = require("../shared/logging");
@@ -44,2 +44,3 @@ const packageJson = require("../../package.json");
      * @param {Array} args The arguments to be executed with the command.
+     * @throws {Error} As may be collected by `cross-spawn.sync`.
      * @returns {string} The version returned by the command.
@@ -78,2 +79,3 @@ */
      * @param {string} bin The bin to check.
+     * @throws {Error} As may be collected by `cross-spawn.sync`.
      * @returns {string} The normalized version returned by the command.
@@ -96,2 +98,3 @@ */
      * @param {boolean} global Whether to check globally or not.
+     * @throws {Error} As may be collected by `cross-spawn.sync`.
      * @returns {string} The normalized version returned by the command.
@@ -101,3 +104,3 @@ */
         const npmBinArgs = ["bin", "-g"];
-        const npmLsArgs = ["ls", "--depth=0", "--json", "eslint"];
+        const npmLsArgs = ["ls", "--depth=0", "--json", pkg];
 
@@ -115,3 +118,3 @@ if (global) {
              */
-            if (isEmpty(parsedStdout) || !(parsedStdout.dependencies && parsedStdout.dependencies.eslint)) {
+            if (Object.keys(parsedStdout).length === 0 || !(parsedStdout.dependencies && parsedStdout.dependencies.eslint)) {
                 return "Not found";
@@ -150,3 +153,4 @@ }
         `Local ESLint version: ${getNpmPackageVersion("eslint", { global: false })}`,
-        `Global ESLint version: ${getNpmPackageVersion("eslint", { global: true })}`
+        `Global ESLint version: ${getNpmPackageVersion("eslint", { global: true })}`,
+        `Operating System: ${os.platform()} ${os.release()}`
     ].join("\n");
@@ -153,0 +157,0 @@ }

lib/shared/traverser.js

@@ -68,4 +68,4 @@ /**
 
-    // eslint-disable-next-line jsdoc/require-description
     /**
+     * Gives current node.
      * @returns {ASTNode} The current node.
@@ -77,4 +77,4 @@ */
 
-    // eslint-disable-next-line jsdoc/require-description
     /**
+     * Gives a copy of the ancestor nodes.
      * @returns {ASTNode[]} The ancestor nodes.
@@ -81,0 +81,0 @@ */

lib/shared/types.js

@@ -24,7 +24,17 @@ /**
  * @property {EcmaFeatures} [ecmaFeatures] The optional features.
- * @property {3|5|6|7|8|9|10|11|12|2015|2016|2017|2018|2019|2020|2021} [ecmaVersion] The ECMAScript version (or revision number).
+ * @property {3|5|6|7|8|9|10|11|12|13|14|15|2015|2016|2017|2018|2019|2020|2021|2022|2023|2024} [ecmaVersion] The ECMAScript version (or revision number).
  * @property {"script"|"module"} [sourceType] The source code type.
+ * @property {boolean} [allowReserved] Allowing the use of reserved words as identifiers in ES3.
  */
 
 /**
+ * @typedef {Object} LanguageOptions
+ * @property {number|"latest"} [ecmaVersion] The ECMAScript version (or revision number).
+ * @property {Record<string, GlobalConf>} [globals] The global variable settings.
+ * @property {"script"|"module"|"commonjs"} [sourceType] The source code type.
+ * @property {string|Object} [parser] The parser to use.
+ * @property {Object} [parserOptions] The parser options to use.
+ */
+
+/**
  * @typedef {Object} ConfigData
@@ -87,9 +97,11 @@ * @property {Record<string, boolean>} [env] The environment settings.
  * @typedef {Object} LintMessage
- * @property {number} column The 1-based column number.
+ * @property {number|undefined} column The 1-based column number.
  * @property {number} [endColumn] The 1-based column number of the end location.
  * @property {number} [endLine] The 1-based line number of the end location.
- * @property {boolean} fatal If `true` then this is a fatal error.
+ * @property {boolean} [fatal] If `true` then this is a fatal error.
  * @property {{range:[number,number], text:string}} [fix] Information for autofix.
- * @property {number} line The 1-based line number.
+ * @property {number|undefined} line The 1-based line number.
  * @property {string} message The error message.
+ * @property {string} [messageId] The ID of the message in the rule's meta.
+ * @property {(string|null)} nodeType Type of node
  * @property {string|null} ruleId The ID of the rule which makes this message.
@@ -101,2 +113,19 @@ * @property {0|1|2} severity The severity of this message.
 /**
+ * @typedef {Object} SuppressedLintMessage
+ * @property {number|undefined} column The 1-based column number.
+ * @property {number} [endColumn] The 1-based column number of the end location.
+ * @property {number} [endLine] The 1-based line number of the end location.
+ * @property {boolean} [fatal] If `true` then this is a fatal error.
+ * @property {{range:[number,number], text:string}} [fix] Information for autofix.
+ * @property {number|undefined} line The 1-based line number.
+ * @property {string} message The error message.
+ * @property {string} [messageId] The ID of the message in the rule's meta.
+ * @property {(string|null)} nodeType Type of node
+ * @property {string|null} ruleId The ID of the rule which makes this message.
+ * @property {0|1|2} severity The severity of this message.
+ * @property {Array<{kind: string, justification: string}>} suppressions The suppression info.
+ * @property {Array<{desc?: string, messageId?: string, fix: {range: [number, number], text: string}}>} [suggestions] Information for suggestions.
+ */
+
+/**
  * @typedef {Object} SuggestionResult
@@ -117,3 +146,2 @@ * @property {string} desc A short description.
  * @typedef {Object} RuleMetaDocs
- * @property {string} category The category of the rule.
  * @property {string} description The description of the rule.
@@ -129,2 +157,3 @@ * @property {boolean} recommended If `true` then the rule is included in `eslint:recommended` preset.
  * @property {"code"|"whitespace"} [fixable] The autofix type.
+ * @property {boolean} [hasSuggestions] If `true` then the rule provides suggestions.
  * @property {Record<string,string>} [messages] The messages the rule reports.
@@ -156,1 +185,38 @@ * @property {string[]} [replacedBy] The IDs of the alternative rules.
  */
+
+/**
+ * A linting result.
+ * @typedef {Object} LintResult
+ * @property {string} filePath The path to the file that was linted.
+ * @property {LintMessage[]} messages All of the messages for the result.
+ * @property {SuppressedLintMessage[]} suppressedMessages All of the suppressed messages for the result.
+ * @property {number} errorCount Number of errors for the result.
+ * @property {number} fatalErrorCount Number of fatal errors for the result.
+ * @property {number} warningCount Number of warnings for the result.
+ * @property {number} fixableErrorCount Number of fixable errors for the result.
+ * @property {number} fixableWarningCount Number of fixable warnings for the result.
+ * @property {string} [source] The source code of the file that was linted.
+ * @property {string} [output] The source code of the file that was linted, with as many fixes applied as possible.
+ * @property {DeprecatedRuleInfo[]} usedDeprecatedRules The list of used deprecated rules.
+ */
+
+/**
+ * Information provided when the maximum warning threshold is exceeded.
+ * @typedef {Object} MaxWarningsExceeded
+ * @property {number} maxWarnings Number of warnings to trigger nonzero exit code.
+ * @property {number} foundWarnings Number of warnings found while linting.
+ */
+
+/**
+ * Metadata about results for formatters.
+ * @typedef {Object} ResultsMeta
+ * @property {MaxWarningsExceeded} [maxWarningsExceeded] Present if the maxWarnings threshold was exceeded.
+ */
+
+/**
+ * A formatter function.
+ * @callback FormatterFunction
+ * @param {LintResult[]} results The list of linting results.
+ * @param {{cwd: string, maxWarningsExceeded?: MaxWarningsExceeded, rulesMeta: Record<string, RuleMeta>}} [context] A context object.
+ * @returns {string | Promise<string>} Formatted text.
+ */

lib/source-code/source-code.js

@@ -12,12 +12,27 @@ /**
 const
-    { isCommentToken } = require("eslint-utils"),
+    { isCommentToken } = require("@eslint-community/eslint-utils"),
     TokenStore = require("./token-store"),
     astUtils = require("../shared/ast-utils"),
     Traverser = require("../shared/traverser"),
-    lodash = require("lodash");
+    globals = require("../../conf/globals"),
+    {
+        directivesPattern
+    } = require("../shared/directives"),
 
+    /* eslint-disable-next-line n/no-restricted-require -- Too messy to figure out right now. */
+    ConfigCommentParser = require("../linter/config-comment-parser"),
+    eslintScope = require("eslint-scope");
+
 //------------------------------------------------------------------------------
+// Type Definitions
+//------------------------------------------------------------------------------
+
+/** @typedef {import("eslint-scope").Variable} Variable */
+
+//------------------------------------------------------------------------------
 // Private
 //------------------------------------------------------------------------------
 
+const commentParser = new ConfigCommentParser();
+
 /**
@@ -49,2 +64,25 @@ * Validates that the given AST has the required information.
 /**
+ * Retrieves globals for the given ecmaVersion.
+ * @param {number} ecmaVersion The version to retrieve globals for.
+ * @returns {Object} The globals for the given ecmaVersion.
+ */
+function getGlobalsForEcmaVersion(ecmaVersion) {
+
+    switch (ecmaVersion) {
+        case 3:
+            return globals.es3;
+
+        case 5:
+            return globals.es5;
+
+        default:
+            if (ecmaVersion < 2015) {
+                return globals[`es${ecmaVersion + 2009}`];
+            }
+
+            return globals[`es${ecmaVersion}`];
+    }
+}
+
+/**
  * Check to see if its a ES6 export declaration.
@@ -84,2 +122,32 @@ * @param {ASTNode} astNode An AST node.
 /**
+ * Normalizes a value for a global in a config
+ * @param {(boolean|string|null)} configuredValue The value given for a global in configuration or in
+ * a global directive comment
+ * @returns {("readable"|"writeable"|"off")} The value normalized as a string
+ * @throws Error if global value is invalid
+ */
+function normalizeConfigGlobal(configuredValue) {
+    switch (configuredValue) {
+        case "off":
+            return "off";
+
+        case true:
+        case "true":
+        case "writeable":
+        case "writable":
+            return "writable";
+
+        case null:
+        case false:
+        case "false":
+        case "readable":
+        case "readonly":
+            return "readonly";
+
+        default:
+            throw new Error(`'${configuredValue}' is not a valid configuration for a global (use 'readonly', 'writable', or 'off')`);
+    }
+}
+
+/**
  * Determines if two nodes or tokens overlap.
@@ -146,2 +214,112 @@ * @param {ASTNode|Token} first The first node or token to check.
 
+//-----------------------------------------------------------------------------
+// Directive Comments
+//-----------------------------------------------------------------------------
+
+/**
+ * Extract the directive and the justification from a given directive comment and trim them.
+ * @param {string} value The comment text to extract.
+ * @returns {{directivePart: string, justificationPart: string}} The extracted directive and justification.
+ */
+function extractDirectiveComment(value) {
+    const match = /\s-{2,}\s/u.exec(value);
+
+    if (!match) {
+        return { directivePart: value.trim(), justificationPart: "" };
+    }
+
+    const directive = value.slice(0, match.index).trim();
+    const justification = value.slice(match.index + match[0].length).trim();
+
+    return { directivePart: directive, justificationPart: justification };
+}
+
+/**
+ * Ensures that variables representing built-in properties of the Global Object,
+ * and any globals declared by special block comments, are present in the global
+ * scope.
+ * @param {Scope} globalScope The global scope.
+ * @param {Object|undefined} configGlobals The globals declared in configuration
+ * @param {Object|undefined} inlineGlobals The globals declared in the source code
+ * @returns {void}
+ */
+function addDeclaredGlobals(globalScope, configGlobals = {}, inlineGlobals = {}) {
+
+    // Define configured global variables.
+    for (const id of new Set([...Object.keys(configGlobals), ...Object.keys(inlineGlobals)])) {
+
+        /*
+         * `normalizeConfigGlobal` will throw an error if a configured global value is invalid. However, these errors would
+         * typically be caught when validating a config anyway (validity for inline global comments is checked separately).
+         */
+        const configValue = configGlobals[id] === void 0 ? void 0 : normalizeConfigGlobal(configGlobals[id]);
+        const commentValue = inlineGlobals[id] && inlineGlobals[id].value;
+        const value = commentValue || configValue;
+        const sourceComments = inlineGlobals[id] && inlineGlobals[id].comments;
+
+        if (value === "off") {
+            continue;
+        }
+
+        let variable = globalScope.set.get(id);
+
+        if (!variable) {
+            variable = new eslintScope.Variable(id, globalScope);
+
+            globalScope.variables.push(variable);
+            globalScope.set.set(id, variable);
+        }
+
+        variable.eslintImplicitGlobalSetting = configValue;
+        variable.eslintExplicitGlobal = sourceComments !== void 0;
+        variable.eslintExplicitGlobalComments = sourceComments;
+        variable.writeable = (value === "writable");
+    }
+
+    /*
+     * "through" contains all references which definitions cannot be found.
+     * Since we augment the global scope using configuration, we need to update
+     * references and remove the ones that were added by configuration.
+     */
+    globalScope.through = globalScope.through.filter(reference => {
+        const name = reference.identifier.name;
+        const variable = globalScope.set.get(name);
+
+        if (variable) {
+
+            /*
+             * Links the variable and the reference.
+             * And this reference is removed from `Scope#through`.
+             */
+            reference.resolved = variable;
+            variable.references.push(reference);
+
+            return false;
+        }
+
+        return true;
+    });
+}
+
+/**
+ * Sets the given variable names as exported so they won't be triggered by
+ * the `no-unused-vars` rule.
+ * @param {eslint.Scope} globalScope The global scope to define exports in.
+ * @param {Record<string,string>} variables An object whose keys are the variable
+ *      names to export.
+ * @returns {void}
+ */
+function markExportedVariables(globalScope, variables) {
+
+    Object.keys(variables).forEach(name => {
+        const variable = globalScope.set.get(name);
+
+        if (variable) {
+            variable.eslintUsed = true;
+            variable.eslintExported = true;
+        }
+    });
+
+}
+
 //------------------------------------------------------------------------------
@@ -151,6 +329,10 @@ // Public Interface
 
+const caches = Symbol("caches");
+
+/**
+ * Represents parsed source code.
+ */
 class SourceCode extends TokenStore {
 
     /**
-     * Represents parsed source code.
      * @param {string|Object} textOrConfig The source code text or config object.
@@ -183,4 +365,13 @@ * @param {string} textOrConfig.text The source code text.
         /**
+         * General purpose caching for the class.
+         */
+        this[caches] = new Map([
+            ["scopes", new WeakMap()],
+            ["vars", new Map()],
+            ["configNodes", void 0]
+        ]);
+
+        /**
          * The flag to indicate that the source code has Unicode BOM.
-         * @type boolean
+         * @type {boolean}
          */
@@ -192,3 +383,3 @@ this.hasBOM = (text.charCodeAt(0) === 0xFEFF);
          * BOM was stripped from this text.
-         * @type string
+         * @type {string}
          */
@@ -199,3 +390,3 @@ this.text = (this.hasBOM ? text.slice(1) : text);
          * The parsed AST for the source code.
-         * @type ASTNode
+         * @type {ASTNode}
          */
@@ -235,3 +426,3 @@ this.ast = ast;
          * This is done to avoid each rule needing to do so separately.
-         * @type string[]
+         * @type {string[]}
          */
@@ -262,3 +453,3 @@ this.lines = [];
 
-        // don't allow modification of this object
+        // don't allow further modification of this object
         Object.freeze(this);
@@ -363,3 +554,3 @@ Object.freeze(this.lines);
             while (currentToken && isCommentToken(currentToken)) {
-                if (node.parent && (currentToken.start < node.parent.start)) {
+                if (node.parent && node.parent.type !== "Program" && (currentToken.start < node.parent.start)) {
                     break;
@@ -376,3 +567,3 @@ }
             while (currentToken && isCommentToken(currentToken)) {
-                if (node.parent && (currentToken.end > node.parent.end)) {
+                if (node.parent && node.parent.type !== "Program" && (currentToken.end > node.parent.end)) {
                     break;
@@ -522,2 +713,3 @@ }
      * @param {number} index The index of a character in a file
+     * @throws {TypeError} If non-numeric index or index out of range.
      * @returns {Object} A {line, column} location object with a 0-indexed column
@@ -547,6 +739,8 @@ * @public
         /*
-         * To figure out which line rangeIndex is on, determine the last index at which rangeIndex could
-         * be inserted into lineIndices to keep the list sorted.
+         * To figure out which line index is on, determine the last place at which index could
+         * be inserted into lineStartIndices to keep the list sorted.
          */
-        const lineNumber = lodash.sortedLastIndex(this.lineStartIndices, index);
+        const lineNumber = index >= this.lineStartIndices[this.lineStartIndices.length - 1]
+            ? this.lineStartIndices.length
+            : this.lineStartIndices.findIndex(el => index < el);
 
@@ -561,2 +755,5 @@ return { line: lineNumber, column: index - this.lineStartIndices[lineNumber - 1] };
      * @param {number} loc.column The column number of the location (0-indexed)
+     * @throws {TypeError|RangeError} If `loc` is not an object with a numeric
+     *   `line` and `column`, if the `line` is less than or equal to zero or
+     *   the line or column is out of the expected range.
      * @returns {number} The range index of the location in the file.
@@ -599,4 +796,297 @@ * @public
     }
+
+    /**
+     * Gets the scope for the given node
+     * @param {ASTNode} currentNode The node to get the scope of
+     * @returns {eslint-scope.Scope} The scope information for this node
+     * @throws {TypeError} If the `currentNode` argument is missing.
+     */
+    getScope(currentNode) {
+
+        if (!currentNode) {
+            throw new TypeError("Missing required argument: node.");
+        }
+
+        // check cache first
+        const cache = this[caches].get("scopes");
+        const cachedScope = cache.get(currentNode);
+
+        if (cachedScope) {
+            return cachedScope;
+        }
+
+        // On Program node, get the outermost scope to avoid return Node.js special function scope or ES modules scope.
+        const inner = currentNode.type !== "Program";
+
+        for (let node = currentNode; node; node = node.parent) {
+            const scope = this.scopeManager.acquire(node, inner);
+
+            if (scope) {
+                if (scope.type === "function-expression-name") {
+                    cache.set(currentNode, scope.childScopes[0]);
+                    return scope.childScopes[0];
+                }
+
+                cache.set(currentNode, scope);
+                return scope;
+            }
+        }
+
+        cache.set(currentNode, this.scopeManager.scopes[0]);
+        return this.scopeManager.scopes[0];
+    }
+
+    /**
+     * Get the variables that `node` defines.
+     * This is a convenience method that passes through
+     * to the same method on the `scopeManager`.
+     * @param {ASTNode} node The node for which the variables are obtained.
+     * @returns {Array<Variable>} An array of variable nodes representing
+     *      the variables that `node` defines.
+     */
+    getDeclaredVariables(node) {
+        return this.scopeManager.getDeclaredVariables(node);
+    }
+
+    /* eslint-disable class-methods-use-this -- node is owned by SourceCode */
+    /**
+     * Gets all the ancestors of a given node
+     * @param {ASTNode} node The node
+     * @returns {Array<ASTNode>} All the ancestor nodes in the AST, not including the provided node, starting
+     * from the root node at index 0 and going inwards to the parent node.
+     * @throws {TypeError} When `node` is missing.
+     */
+    getAncestors(node) {
+
+        if (!node) {
+            throw new TypeError("Missing required argument: node.");
+        }
+
+        const ancestorsStartingAtParent = [];
+
+        for (let ancestor = node.parent; ancestor; ancestor = ancestor.parent) {
+            ancestorsStartingAtParent.push(ancestor);
+        }
+
+        return ancestorsStartingAtParent.reverse();
+    }
+    /* eslint-enable class-methods-use-this -- node is owned by SourceCode */
+
+    /**
+     * Marks a variable as used in the current scope
+     * @param {string} name The name of the variable to mark as used.
+     * @param {ASTNode} [refNode] The closest node to the variable reference.
+     * @returns {boolean} True if the variable was found and marked as used, false if not.
+     */
+    markVariableAsUsed(name, refNode = this.ast) {
+
+        const currentScope = this.getScope(refNode);
+        let initialScope = currentScope;
+
+        /*
+         * When we are in an ESM or CommonJS module, we need to start searching
+         * from the top-level scope, not the global scope. For ESM the top-level
+         * scope is the module scope; for CommonJS the top-level scope is the
+         * outer function scope.
+         *
+         * Without this check, we might miss a variable declared with `var` at
+         * the top-level because it won't exist in the global scope.
+         */
+        if (
+            currentScope.type === "global" &&
+            currentScope.childScopes.length > 0 &&
+
+            // top-level scopes refer to a `Program` node
+            currentScope.childScopes[0].block === this.ast
+        ) {
+            initialScope = currentScope.childScopes[0];
+        }
+
+        for (let scope = initialScope; scope; scope = scope.upper) {
+            const variable = scope.variables.find(scopeVar => scopeVar.name === name);
+
+            if (variable) {
+                variable.eslintUsed = true;
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+
+    /**
+     * Returns an array of all inline configuration nodes found in the
+     * source code.
+     * @returns {Array<Token>} An array of all inline configuration nodes.
+     */
+    getInlineConfigNodes() {
+
+        // check the cache first
+        let configNodes = this[caches].get("configNodes");
+
+        if (configNodes) {
+            return configNodes;
+        }
+
+        // calculate fresh config nodes
+        configNodes = this.ast.comments.filter(comment => {
+
+            // shebang comments are never directives
+            if (comment.type === "Shebang") {
+                return false;
+            }
+
+            const { directivePart } = extractDirectiveComment(comment.value);
+
+            const directiveMatch = directivesPattern.exec(directivePart);
+
+            if (!directiveMatch) {
+                return false;
+            }
+
+            // only certain comment types are supported as line comments
+            return comment.type !== "Line" || !!/^eslint-disable-(next-)?line$/u.test(directiveMatch[1]);
+        });
+
+        this[caches].set("configNodes", configNodes);
+
+        return configNodes;
+    }
+
+    /**
+     * Applies language options sent in from the core.
+     * @param {Object} languageOptions The language options for this run.
+     * @returns {void}
+     */
+    applyLanguageOptions(languageOptions) {
+
+        /*
+         * Add configured globals and language globals
+         *
+         * Using Object.assign instead of object spread for performance reasons
+         * https://github.com/eslint/eslint/issues/16302
+         */
+        const configGlobals = Object.assign(
+            {},
+            getGlobalsForEcmaVersion(languageOptions.ecmaVersion),
+            languageOptions.sourceType === "commonjs" ? globals.commonjs : void 0,
+            languageOptions.globals
+        );
+        const varsCache = this[caches].get("vars");
+
+        varsCache.set("configGlobals", configGlobals);
+    }
+
+    /**
+     * Applies configuration found inside of the source code. This method is only
+     * called when ESLint is running with inline configuration allowed.
+     * @returns {{problems:Array<Problem>,configs:{config:FlatConfigArray,node:ASTNode}}} Information
+     *      that ESLint needs to further process the inline configuration.
+     */
+    applyInlineConfig() {
+
+        const problems = [];
+        const configs = [];
+        const exportedVariables = {};
+        const inlineGlobals = Object.create(null);
+
+        this.getInlineConfigNodes().forEach(comment => {
+
+            const { directivePart } = extractDirectiveComment(comment.value);
+            const match = directivesPattern.exec(directivePart);
+            const directiveText = match[1];
+            const directiveValue = directivePart.slice(match.index + directiveText.length);
+
+            switch (directiveText) {
+                case "exported":
+                    Object.assign(exportedVariables, commentParser.parseStringConfig(directiveValue, comment));
+                    break;
+
+                case "globals":
+                case "global":
+                    for (const [id, { value }] of Object.entries(commentParser.parseStringConfig(directiveValue, comment))) {
+                        let normalizedValue;
+
+                        try {
+                            normalizedValue = normalizeConfigGlobal(value);
+                        } catch (err) {
+                            problems.push({
+                                ruleId: null,
+                                loc: comment.loc,
+                                message: err.message
+                            });
+                            continue;
+                        }
+
+                        if (inlineGlobals[id]) {
+                            inlineGlobals[id].comments.push(comment);
+                            inlineGlobals[id].value = normalizedValue;
+                        } else {
+                            inlineGlobals[id] = {
+                                comments: [comment],
+                                value: normalizedValue
+                            };
+                        }
+                    }
+                    break;
+
+                case "eslint": {
+                    const parseResult = commentParser.parseJsonConfig(directiveValue, comment.loc);
+
+                    if (parseResult.success) {
+                        configs.push({
+                            config: {
+                                rules: parseResult.config
+                            },
+                            node: comment
+                        });
+                    } else {
+                        problems.push(parseResult.error);
+                    }
+
+                    break;
+                }
+
+                // no default
+            }
+        });
+
+        // save all the new variables for later
+        const varsCache = this[caches].get("vars");
+
+        varsCache.set("inlineGlobals", inlineGlobals);
+        varsCache.set("exportedVariables", exportedVariables);
+
+        return {
+            configs,
+            problems
+        };
+    }
+
+    /**
+     * Called by ESLint core to indicate that it has finished providing
+     * information. We now add in all the missing variables and ensure that
+     * state-changing methods cannot be called by rules.
+     * @returns {void}
+     */
+    finalize() {
+
+        // Step 1: ensure that all of the necessary variables are up to date
+        const varsCache = this[caches].get("vars");
+        const globalScope = this.scopeManager.scopes[0];
+        const configGlobals = varsCache.get("configGlobals");
+        const inlineGlobals = varsCache.get("inlineGlobals");
+        const exportedVariables = varsCache.get("exportedVariables");
+
+        addDeclaredGlobals(globalScope, configGlobals, inlineGlobals);
+
+        if (exportedVariables) {
+            markExportedVariables(globalScope, exportedVariables);
+        }
+
+    }
+
 }
 
 module.exports = SourceCode;

lib/source-code/token-store/cursor.js

@@ -72,6 +72,6 @@ /**
      */
-    /* istanbul ignore next */
-    moveNext() { // eslint-disable-line class-methods-use-this
+    /* c8 ignore next */
+    moveNext() { // eslint-disable-line class-methods-use-this -- Unused
         throw new Error("Not implemented.");
     }
 };

lib/source-code/token-store/index.js

@@ -12,3 +12,3 @@ /**
 const assert = require("assert");
-const { isCommentToken } = require("eslint-utils");
+const { isCommentToken } = require("@eslint-community/eslint-utils");
 const cursors = require("./cursors");
@@ -15,0 +15,0 @@ const ForwardTokenCursor = require("./forward-token-cursor");

lib/source-code/token-store/utils.js

@@ -8,22 +8,2 @@ /**
 //------------------------------------------------------------------------------
-// Requirements
-//------------------------------------------------------------------------------
-
-const lodash = require("lodash");
-
-//------------------------------------------------------------------------------
-// Helpers
-//------------------------------------------------------------------------------
-
-/**
- * Gets `token.range[0]` from the given token.
- * @param {Node|Token|Comment} token The token to get.
- * @returns {number} The start location.
- * @private
- */
-function getStartLocation(token) {
-    return token.range[0];
-}
-
-//------------------------------------------------------------------------------
 // Exports
@@ -33,3 +13,3 @@ //------------------------------------------------------------------------------
 /**
- * Binary-searches the index of the first token which is after the given location.
+ * Finds the index of the first token which is after the given location.
  * If it was not found, this returns `tokens.length`.
@@ -41,7 +21,24 @@ * @param {(Token|Comment)[]} tokens It searches the token in this list.
 exports.search = function search(tokens, location) {
-    return lodash.sortedIndexBy(
-        tokens,
-        { range: [location] },
-        getStartLocation
-    );
+    for (let minIndex = 0, maxIndex = tokens.length - 1; minIndex <= maxIndex;) {
+
+        /*
+         * Calculate the index in the middle between minIndex and maxIndex.
+         * `| 0` is used to round a fractional value down to the nearest integer: this is similar to
+         * using `Math.trunc()` or `Math.floor()`, but performance tests have shown this method to
+         * be faster.
+         */
+        const index = (minIndex + maxIndex) / 2 | 0;
+        const token = tokens[index];
+        const tokenStartLocation = token.range[0];
+
+        if (location <= tokenStartLocation) {
+            if (index === minIndex) {
+                return index;
+            }
+            maxIndex = index;
+        } else {
+            minIndex = index + 1;
+        }
+    }
+    return tokens.length;
 };
@@ -63,4 +60,9 @@
         const index = indexMap[startLoc - 1];
-        const token = (index >= 0 && index < tokens.length) ? tokens[index] : null;
+        const token = tokens[index];
 
+        // If the mapped index is out of bounds, the returned cursor index will point after the end of the tokens array.
+        if (!token) {
+            return tokens.length;
+        }
+
         /*
@@ -70,3 +72,3 @@ * For the map of "comment's location -> token's index", it points the next token of a comment.
          */
-        if (token && token.range[0] >= startLoc) {
+        if (token.range[0] >= startLoc) {
             return index;
@@ -93,4 +95,9 @@ }
         const index = indexMap[endLoc - 1];
-        const token = (index >= 0 && index < tokens.length) ? tokens[index] : null;
+        const token = tokens[index];
 
+        // If the mapped index is out of bounds, the returned cursor index will point before the end of the tokens array.
+        if (!token) {
+            return tokens.length - 1;
+        }
+
         /*
@@ -100,3 +107,3 @@ * For the map of "comment's location -> token's index", it points the next token of a comment.
          */
-        if (token && token.range[1] > endLoc) {
+        if (token.range[1] > endLoc) {
             return index - 1;
@@ -103,0 +110,0 @@ }

package.json

 {
   "name": "eslint",
-  "version": "7.20.0",
+  "version": "8.50.0",
   "author": "Nicholas C. Zakas <[e-mail]>",
@@ -10,17 +10,25 @@ "description": "An AST-based pattern checker for JavaScript.",
   "main": "./lib/api.js",
+  "exports": {
+    "./package.json": "./package.json",
+    ".": "./lib/api.js",
+    "./use-at-your-own-risk": "./lib/unsupported-api.js"
+  },
   "scripts": {
+    "build:docs:update-links": "node tools/fetch-docs-links.js",
+    "build:site": "node Makefile.js gensite",
+    "build:webpack": "node Makefile.js webpack",
+    "build:readme": "node tools/update-readme.js",
+    "lint": "node Makefile.js lint",
+    "lint:docs:js": "node Makefile.js lintDocsJS",
+    "lint:fix": "node Makefile.js lint -- fix",
+    "lint:fix:docs:js": "node Makefile.js lintDocsJS -- fix",
+    "release:generate:alpha": "node Makefile.js generatePrerelease -- alpha",
+    "release:generate:beta": "node Makefile.js generatePrerelease -- beta",
+    "release:generate:latest": "node Makefile.js generateRelease",
+    "release:generate:rc": "node Makefile.js generatePrerelease -- rc",
+    "release:publish": "node Makefile.js publishRelease",
     "test": "node Makefile.js test",
     "test:cli": "mocha",
-    "lint": "node Makefile.js lint",
-    "fix": "node Makefile.js lint -- fix",
-    "fuzz": "node Makefile.js fuzz",
-    "generate-release": "node Makefile.js generateRelease",
-    "generate-alpharelease": "node Makefile.js generatePrerelease -- alpha",
-    "generate-betarelease": "node Makefile.js generatePrerelease -- beta",
-    "generate-rcrelease": "node Makefile.js generatePrerelease -- rc",
-    "publish-release": "node Makefile.js publishRelease",
-    "docs": "node Makefile.js docs",
-    "gensite": "node Makefile.js gensite",
-    "webpack": "node Makefile.js webpack",
-    "perf": "node Makefile.js perf"
+    "test:fuzz": "node Makefile.js fuzz",
+    "test:performance": "node Makefile.js perf"
   },
@@ -31,7 +39,13 @@ "gitHooks": {
   "lint-staged": {
-    "*.js": [
-      "eslint --fix",
-      "git add"
+    "*.js": "eslint --fix",
+    "*.md": "markdownlint --fix",
+    "lib/rules/*.js": [
+      "node tools/update-eslint-all.js",
+      "git add packages/js/src/configs/eslint-all.js"
     ],
-    "*.md": "markdownlint"
+    "docs/src/rules/*.md": [
+      "node tools/fetch-docs-links.js",
+      "git add docs/src/_data/further_reading_links.json"
+    ],
+    "docs/**/*.svg": "npx svgo -r --multipass"
   },
@@ -51,39 +65,39 @@ "files": [
   "dependencies": {
-    "@babel/code-frame": "7.12.11",
-    "@eslint/eslintrc": "^0.3.0",
-    "ajv": "^6.10.0",
+    "@eslint-community/eslint-utils": "^4.2.0",
+    "@eslint-community/regexpp": "^4.6.1",
+    "@eslint/eslintrc": "^2.1.2",
+    "@eslint/js": "8.50.0",
+    "@humanwhocodes/config-array": "^0.11.11",
+    "@humanwhocodes/module-importer": "^1.0.1",
+    "@nodelib/fs.walk": "^1.2.8",
+    "ajv": "^6.12.4",
     "chalk": "^4.0.0",
     "cross-spawn": "^7.0.2",
-    "debug": "^4.0.1",
+    "debug": "^4.3.2",
     "doctrine": "^3.0.0",
-    "enquirer": "^2.3.5",
-    "eslint-scope": "^5.1.1",
-    "eslint-utils": "^2.1.0",
-    "eslint-visitor-keys": "^2.0.0",
-    "espree": "^7.3.1",
-    "esquery": "^1.4.0",
+    "escape-string-regexp": "^4.0.0",
+    "eslint-scope": "^7.2.2",
+    "eslint-visitor-keys": "^3.4.3",
+    "espree": "^9.6.1",
+    "esquery": "^1.4.2",
     "esutils": "^2.0.2",
-    "file-entry-cache": "^6.0.0",
-    "functional-red-black-tree": "^1.0.1",
-    "glob-parent": "^5.0.0",
-    "globals": "^12.1.0",
-    "ignore": "^4.0.6",
-    "import-fresh": "^3.0.0",
+    "fast-deep-equal": "^3.1.3",
+    "file-entry-cache": "^6.0.1",
+    "find-up": "^5.0.0",
+    "glob-parent": "^6.0.2",
+    "globals": "^13.19.0",
+    "graphemer": "^1.4.0",
+    "ignore": "^5.2.0",
     "imurmurhash": "^0.1.4",
     "is-glob": "^4.0.0",
-    "js-yaml": "^3.13.1",
+    "is-path-inside": "^3.0.3",
+    "js-yaml": "^4.1.0",
     "json-stable-stringify-without-jsonify": "^1.0.1",
     "levn": "^0.4.1",
-    "lodash": "^4.17.20",
-    "minimatch": "^3.0.4",
+    "lodash.merge": "^4.6.2",
+    "minimatch": "^3.1.2",
     "natural-compare": "^1.4.0",
-    "optionator": "^0.9.1",
-    "progress": "^2.0.0",
-    "regexpp": "^3.1.0",
-    "semver": "^7.2.1",
-    "strip-ansi": "^6.0.0",
-    "strip-json-comments": "^3.1.0",
-    "table": "^6.0.4",
-    "text-table": "^0.2.0",
-    "v8-compile-cache": "^2.0.3"
+    "optionator": "^0.9.3",
+    "strip-ansi": "^6.0.1",
+    "text-table": "^0.2.0"
   },
@@ -93,4 +107,9 @@ "devDependencies": {
     "@babel/preset-env": "^7.4.3",
-    "acorn": "^7.2.0",
+    "@wdio/browser-runner": "^8.14.6",
+    "@wdio/cli": "^8.14.6",
+    "@wdio/concise-reporter": "^8.14.0",
+    "@wdio/globals": "^8.14.6",
+    "@wdio/mocha-framework": "^8.14.0",
     "babel-loader": "^8.0.5",
+    "c8": "^7.12.0",
     "chai": "^4.0.1",
@@ -100,40 +119,48 @@ "cheerio": "^0.22.0",
     "core-js": "^3.1.3",
-    "dateformat": "^3.0.3",
     "ejs": "^3.0.2",
-    "escape-string-regexp": "^3.0.0",
     "eslint": "file:.",
     "eslint-config-eslint": "file:packages/eslint-config-eslint",
-    "eslint-plugin-eslint-plugin": "^2.2.1",
+    "eslint-plugin-eslint-comments": "^3.2.0",
+    "eslint-plugin-eslint-plugin": "^5.1.0",
     "eslint-plugin-internal-rules": "file:tools/internal-rules",
-    "eslint-plugin-jsdoc": "^22.1.0",
-    "eslint-plugin-node": "^11.1.0",
-    "eslint-release": "^2.0.0",
-    "eslump": "^2.0.0",
+    "eslint-plugin-jsdoc": "^46.2.5",
+    "eslint-plugin-n": "^16.0.0",
+    "eslint-plugin-unicorn": "^42.0.0",
+    "eslint-release": "^3.2.0",
+    "eslump": "^3.0.0",
     "esprima": "^4.0.1",
-    "fs-teardown": "^0.1.0",
+    "fast-glob": "^3.2.11",
+    "fs-teardown": "^0.1.3",
     "glob": "^7.1.6",
-    "jsdoc": "^3.5.5",
-    "karma": "^4.0.1",
-    "karma-chrome-launcher": "^3.1.0",
-    "karma-mocha": "^1.3.0",
-    "karma-mocha-reporter": "^2.2.3",
-    "karma-webpack": "^4.0.0-rc.6",
-    "lint-staged": "^10.1.2",
+    "got": "^11.8.3",
+    "gray-matter": "^4.0.3",
+    "lint-staged": "^11.0.0",
     "load-perf": "^0.2.0",
-    "markdownlint": "^0.19.0",
-    "markdownlint-cli": "^0.22.0",
+    "markdownlint": "^0.25.1",
+    "markdownlint-cli": "^0.31.1",
+    "marked": "^4.0.8",
     "memfs": "^3.0.1",
-    "mocha": "^7.1.1",
-    "mocha-junit-reporter": "^1.23.0",
+    "metascraper": "^5.25.7",
+    "metascraper-description": "^5.25.7",
+    "metascraper-image": "^5.29.3",
+    "metascraper-logo": "^5.25.7",
+    "metascraper-logo-favicon": "^5.25.7",
+    "metascraper-title": "^5.25.7",
+    "mocha": "^8.3.2",
+    "mocha-junit-reporter": "^2.0.0",
+    "node-polyfill-webpack-plugin": "^1.0.3",
     "npm-license": "^0.3.3",
-    "nyc": "^15.0.1",
+    "pirates": "^4.0.5",
+    "progress": "^2.0.3",
     "proxyquire": "^2.0.1",
-    "puppeteer": "^4.0.0",
-    "recast": "^0.19.0",
+    "recast": "^0.20.4",
     "regenerator-runtime": "^0.13.2",
+    "rollup-plugin-node-polyfills": "^0.2.1",
+    "semver": "^7.5.3",
     "shelljs": "^0.8.2",
-    "sinon": "^9.0.1",
-    "temp": "^0.9.0",
-    "webpack": "^4.35.0",
-    "webpack-cli": "^3.3.5",
+    "sinon": "^11.0.0",
+    "vite-plugin-commonjs": "^0.8.2",
+    "webdriverio": "^8.14.6",
+    "webpack": "^5.23.0",
+    "webpack-cli": "^4.5.0",
     "yorkie": "^2.0.0"
@@ -150,4 +177,4 @@ },
   "engines": {
-    "node": "^10.12.0 || >=12.0.0"
+    "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
   }
 }

README.md

@@ -13,10 +13,10 @@ [![npm version](https://img.shields.io/npm/v/eslint.svg)](https://www.npmjs.com/package/eslint)
 [Website](https://eslint.org) |
-[Configuring](https://eslint.org/docs/user-guide/configuring) |
+[Configure ESLint](https://eslint.org/docs/latest/use/configure) |
 [Rules](https://eslint.org/docs/rules/) |
-[Contributing](https://eslint.org/docs/developer-guide/contributing) |
-[Reporting Bugs](https://eslint.org/docs/developer-guide/contributing/reporting-bugs) |
+[Contribute to ESLint](https://eslint.org/docs/latest/contribute) |
+[Report Bugs](https://eslint.org/docs/latest/contribute/report-bugs) |
 [Code of Conduct](https://eslint.org/conduct) |
 [Twitter](https://twitter.com/geteslint) |
-[Mailing List](https://groups.google.com/group/eslint) |
-[Chat Room](https://eslint.org/chat)
+[Discord](https://eslint.org/chat) |
+[Mastodon](https://fosstodon.org/@eslint)
 
@@ -35,3 +35,3 @@ ESLint is a tool for identifying and reporting on patterns found in ECMAScript/JavaScript code. In many ways, it is similar to JSLint and JSHint with a few exceptions:
 4. [Filing Issues](#filing-issues)
-5. [Frequently Asked Questions](#faq)
+5. [Frequently Asked Questions](#frequently-asked-questions)
 6. [Releases](#releases)
@@ -46,27 +46,21 @@ 7. [Security Policy](#security-policy)
 
-## <a name="installation-and-usage"></a>Installation and Usage
+## Installation and Usage
 
-Prerequisites: [Node.js](https://nodejs.org/) (`^10.12.0`, or `>=12.0.0`) built with SSL support. (If you are using an official Node.js distribution, SSL is always built in.)
+Prerequisites: [Node.js](https://nodejs.org/) (`^12.22.0`, `^14.17.0`, or `>=16.0.0`) built with SSL support. (If you are using an official Node.js distribution, SSL is always built in.)
 
-You can install ESLint using npm:
+You can install and configure ESLint using this command:
 
+```shell
+npm init @eslint/config
 ```
-$ npm install eslint --save-dev
-```
 
-You should then set up a configuration file:
-
-```
-$ ./node_modules/.bin/eslint --init
-```
-
 After that, you can run ESLint on any file or directory like this:
 
+```shell
+./node_modules/.bin/eslint yourfile.js
 ```
-$ ./node_modules/.bin/eslint yourfile.js
-```
 
-## <a name="configuration"></a>Configuration
+## Configuration
 
-After running `eslint --init`, you'll have a `.eslintrc` file in your directory. In it, you'll see some rules configured like this:
+After running `npm init @eslint/config`, you'll have an `.eslintrc` file in your directory. In it, you'll see some rules configured like this:
 
@@ -88,18 +82,18 @@ ```json
 
-The three error levels allow you fine-grained control over how ESLint applies rules (for more configuration options and details, see the [configuration docs](https://eslint.org/docs/user-guide/configuring)).
+The three error levels allow you fine-grained control over how ESLint applies rules (for more configuration options and details, see the [configuration docs](https://eslint.org/docs/latest/use/configure)).
 
-## <a name="code-of-conduct"></a>Code of Conduct
+## Code of Conduct
 
 ESLint adheres to the [JS Foundation Code of Conduct](https://eslint.org/conduct).
 
-## <a name="filing-issues"></a>Filing Issues
+## Filing Issues
 
 Before filing an issue, please be sure to read the guidelines for what you're reporting:
 
-* [Bug Report](https://eslint.org/docs/developer-guide/contributing/reporting-bugs)
-* [Propose a New Rule](https://eslint.org/docs/developer-guide/contributing/new-rules)
-* [Proposing a Rule Change](https://eslint.org/docs/developer-guide/contributing/rule-changes)
-* [Request a Change](https://eslint.org/docs/developer-guide/contributing/changes)
+* [Bug Report](https://eslint.org/docs/latest/contribute/report-bugs)
+* [Propose a New Rule](https://eslint.org/docs/latest/contribute/propose-new-rule)
+* [Proposing a Rule Change](https://eslint.org/docs/latest/contribute/propose-rule-change)
+* [Request a Change](https://eslint.org/docs/latest/contribute/request-change)
 
-## <a name="faq"></a>Frequently Asked Questions
+## Frequently Asked Questions
 
@@ -110,3 +104,3 @@ ### I'm using JSCS, should I migrate to ESLint?
 
-We have prepared a [migration guide](https://eslint.org/docs/user-guide/migrating-from-jscs) to help you convert your JSCS settings to an ESLint configuration.
+We have prepared a [migration guide](https://eslint.org/docs/latest/use/migrating-from-jscs) to help you convert your JSCS settings to an ESLint configuration.
 
@@ -127,7 +121,7 @@ We are now at or near 100% compatibility with JSCS. If you try ESLint and believe we are not yet compatible with a JSCS rule/configuration, please create an issue (mentioning that it is a JSCS compatibility issue) and we will evaluate it as per our normal process.
 
-Yes, ESLint natively supports parsing JSX syntax (this must be enabled in [configuration](https://eslint.org/docs/user-guide/configuring)). Please note that supporting JSX syntax *is not* the same as supporting React. React applies specific semantics to JSX syntax that ESLint doesn't recognize. We recommend using [eslint-plugin-react](https://www.npmjs.com/package/eslint-plugin-react) if you are using React and want React semantics.
+Yes, ESLint natively supports parsing JSX syntax (this must be enabled in [configuration](https://eslint.org/docs/latest/use/configure)). Please note that supporting JSX syntax *is not* the same as supporting React. React applies specific semantics to JSX syntax that ESLint doesn't recognize. We recommend using [eslint-plugin-react](https://www.npmjs.com/package/eslint-plugin-react) if you are using React and want React semantics.
 
 ### What ECMAScript versions does ESLint support?
 
-ESLint has full support for ECMAScript 3, 5 (default), 2015, 2016, 2017, 2018, 2019, and 2020. You can set your desired ECMAScript syntax (and other settings, like global variables or your target environments) through [configuration](https://eslint.org/docs/user-guide/configuring).
+ESLint has full support for ECMAScript 3, 5 (default), 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, and 2023. You can set your desired ECMAScript syntax (and other settings, like global variables or your target environments) through [configuration](https://eslint.org/docs/latest/use/configure).
 
@@ -138,9 +132,9 @@ ### What about experimental features?
 
-In other cases (including if rules need to warn on more or fewer cases due to new syntax, rather than just not crashing), we recommend you use other parsers and/or rule plugins. If you are using Babel, you can use the [babel-eslint](https://github.com/babel/babel-eslint) parser and [eslint-plugin-babel](https://github.com/babel/eslint-plugin-babel) to use any option available in Babel.
+In other cases (including if rules need to warn on more or fewer cases due to new syntax, rather than just not crashing), we recommend you use other parsers and/or rule plugins. If you are using Babel, you can use [@babel/eslint-parser](https://www.npmjs.com/package/@babel/eslint-parser) and [@babel/eslint-plugin](https://www.npmjs.com/package/@babel/eslint-plugin) to use any option available in Babel.
 
-Once a language feature has been adopted into the ECMAScript standard (stage 4 according to the [TC39 process](https://tc39.github.io/process-document/)), we will accept issues and pull requests related to the new feature, subject to our [contributing guidelines](https://eslint.org/docs/developer-guide/contributing). Until then, please use the appropriate parser and plugin(s) for your experimental feature.
+Once a language feature has been adopted into the ECMAScript standard (stage 4 according to the [TC39 process](https://tc39.github.io/process-document/)), we will accept issues and pull requests related to the new feature, subject to our [contributing guidelines](https://eslint.org/docs/latest/contribute). Until then, please use the appropriate parser and plugin(s) for your experimental feature.
 
 ### Where to ask for help?
 
-Join our [Mailing List](https://groups.google.com/group/eslint) or [Chatroom](https://eslint.org/chat).
+Open a [discussion](https://github.com/eslint/eslint/discussions) or stop by our [Discord server](https://eslint.org/chat).
 
@@ -157,11 +151,11 @@ ### Why doesn't ESLint lock dependency versions?
 
-## <a name="releases"></a>Releases
+## Releases
 
 We have scheduled releases every two weeks on Friday or Saturday. You can follow a [release issue](https://github.com/eslint/eslint/issues?q=is%3Aopen+is%3Aissue+label%3Arelease) for updates about the scheduling of any particular release.
 
-## <a name="security-policy"></a>Security Policy
+## Security Policy
 
 ESLint takes security seriously. We work hard to ensure that ESLint is safe for everyone and that security issues are addressed quickly and responsibly. Read the full [security policy](https://github.com/eslint/.github/blob/master/SECURITY.md).
 
-## <a name="semantic-versioning-policy"></a>Semantic Versioning Policy
+## Semantic Versioning Policy
 
@@ -199,3 +193,3 @@ ESLint follows [semantic versioning](https://semver.org). However, due to the nature of ESLint as a code quality tool, it's not always clear when a minor or major version bump occurs. To help clarify this for everyone, we've defined the following semantic versioning policy for ESLint:
 
-## <a name="stylistic-rule-updates"></a>Stylistic Rule Updates
+## Stylistic Rule Updates
 
@@ -209,7 +203,7 @@ Stylistic rules are frozen according to [our policy](https://eslint.org/blog/2020/05/changes-to-rules-policies) on how we evaluate new rules and rule changes.
 
-## <a name="license"></a>License
+## License
 
 [![FOSSA Status](https://app.fossa.io/api/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Feslint%2Feslint.svg?type=large)](https://app.fossa.io/projects/git%2Bhttps%3A%2F%2Fgithub.com%2Feslint%2Feslint?ref=badge_large)
 
-## <a name="team"></a>Team
+## Team
 
@@ -219,2 +213,3 @@ These folks keep the project moving and are resources for help.
 <!-- NOTE: This section is autogenerated. Do not manually edit.-->
+
 <!--teamstart-->
@@ -232,12 +227,2 @@
 </td><td align="center" valign="top" width="11%">
-<a href="https://github.com/btmills">
-<img src="https://github.com/btmills.png?s=75" width="75" height="75"><br />
-Brandon Mills
-</a>
-</td><td align="center" valign="top" width="11%">
-<a href="https://github.com/mysticatea">
-<img src="https://github.com/mysticatea.png?s=75" width="75" height="75"><br />
-Toru Nagashima
-</a>
-</td><td align="center" valign="top" width="11%">
 <a href="https://github.com/mdjermanovic">
@@ -249,3 +234,2 @@ <img src="https://github.com/mdjermanovic.png?s=75" width="75" height="75"><br />
 
-
 ### Reviewers
@@ -258,34 +242,56 @@
 <img src="https://github.com/aladdin-add.png?s=75" width="75" height="75"><br />
-薛定谔的猫
+唯然
 </a>
+</td><td align="center" valign="top" width="11%">
+<a href="https://github.com/snitin315">
+<img src="https://github.com/snitin315.png?s=75" width="75" height="75"><br />
+Nitin Kumar
+</a>
 </td></tr></tbody></table>
 
+### Committers
 
+The people who review and fix bugs and help triage issues.
 
+<table><tbody><tr><td align="center" valign="top" width="11%">
+<a href="https://github.com/bmish">
+<img src="https://github.com/bmish.png?s=75" width="75" height="75"><br />
+Bryan Mishkin
+</a>
+</td><td align="center" valign="top" width="11%">
+<a href="https://github.com/fasttime">
+<img src="https://github.com/fasttime.png?s=75" width="75" height="75"><br />
+Francesco Trotta
+</a>
+</td><td align="center" valign="top" width="11%">
+<a href="https://github.com/ota-meshi">
+<img src="https://github.com/ota-meshi.png?s=75" width="75" height="75"><br />
+Yosuke Ota
+</a>
+</td></tr></tbody></table>
 
-### Committers
+### Website Team
 
-The people who review and fix bugs and help triage issues.
+Team members who focus specifically on eslint.org
 
 <table><tbody><tr><td align="center" valign="top" width="11%">
-<a href="https://github.com/g-plane">
-<img src="https://github.com/g-plane.png?s=75" width="75" height="75"><br />
-Pig Fang
+<a href="https://github.com/amareshsm">
+<img src="https://github.com/amareshsm.png?s=75" width="75" height="75"><br />
+Amaresh  S M
 </a>
 </td><td align="center" valign="top" width="11%">
-<a href="https://github.com/anikethsaha">
-<img src="https://github.com/anikethsaha.png?s=75" width="75" height="75"><br />
-Anix
+<a href="https://github.com/harish-sethuraman">
+<img src="https://github.com/harish-sethuraman.png?s=75" width="75" height="75"><br />
+Strek
 </a>
 </td><td align="center" valign="top" width="11%">
-<a href="https://github.com/yeonjuan">
-<img src="https://github.com/yeonjuan.png?s=75" width="75" height="75"><br />
-YeonJuan
+<a href="https://github.com/kecrily">
+<img src="https://github.com/kecrily.png?s=75" width="75" height="75"><br />
+Percy Ma
 </a>
 </td></tr></tbody></table>
 
-
 <!--teamend-->
 
-## <a name="sponsors"></a>Sponsors
+## Sponsors
 
@@ -297,9 +303,9 @@ The following companies, organizations, and individuals support ESLint's ongoing maintenance and development. [Become a Sponsor](https://opencollective.com/eslint) to get your logo on our README and website.
 <h3>Platinum Sponsors</h3>
-<p><a href="https://automattic.com"><img src="https://images.opencollective.com/photomatt/d0ef3e1/logo.png" alt="Automattic" height="undefined"></a></p><h3>Gold Sponsors</h3>
-<p><a href="https://nx.dev"><img src="https://images.opencollective.com/nx/0efbe42/logo.png" alt="Nx (by Nrwl)" height="96"></a> <a href="https://google.com/chrome"><img src="https://images.opencollective.com/chrome/dc55bd4/logo.png" alt="Chrome's Web Framework & Tools Performance Fund" height="96"></a> <a href="https://www.shopify.com"><img src="https://images.opencollective.com/shopify/e780cd4/logo.png" alt="Shopify" height="96"></a> <a href="https://www.salesforce.com"><img src="https://images.opencollective.com/salesforce/ca8f997/logo.png" alt="Salesforce" height="96"></a> <a href="https://www.airbnb.com/"><img src="https://images.opencollective.com/airbnb/d327d66/logo.png" alt="Airbnb" height="96"></a> <a href="https://aka.ms/microsoftfossfund"><img src="https://avatars.githubusercontent.com/u/67931232?u=7fddc652a464d7151b97e8f108392af7d54fa3e8&v=4" alt="Microsoft FOSS Fund Sponsorships" height="96"></a></p><h3>Silver Sponsors</h3>
-<p><a href="https://retool.com/"><img src="https://images.opencollective.com/retool/98ea68e/logo.png" alt="Retool" height="64"></a> <a href="https://liftoff.io/"><img src="https://images.opencollective.com/liftoff/5c4fa84/logo.png" alt="Liftoff" height="64"></a> <a href="https://www.ampproject.org/"><img src="https://images.opencollective.com/amp/c8a3b25/logo.png" alt="AMP Project" height="64"></a></p><h3>Bronze Sponsors</h3>
-<p><a href="https://writersperhour.com"><img src="https://images.opencollective.com/writersperhour/5787d4b/logo.png" alt="Writers Per Hour" height="32"></a> <a href="https://www.betacalendars.com/march-calendar.html"><img src="https://images.opencollective.com/betacalendars/9334b33/logo.png" alt="March 2021 calendar" height="32"></a> <a href="https://buy.fineproxy.org/eng/"><img src="https://images.opencollective.com/buy-fineproxy-org/b282e39/logo.png" alt="Buy.Fineproxy.Org" height="32"></a> <a href="https://www.crosswordsolver.org/anagram-solver/"><img src="https://images.opencollective.com/anagram-solver/2666271/logo.png" alt="Anagram Solver" height="32"></a> <a href="null"><img src="https://images.opencollective.com/bugsnag-stability-monitoring/c2cef36/logo.png" alt="Bugsnag Stability Monitoring" height="32"></a> <a href="https://mixpanel.com"><img src="https://images.opencollective.com/mixpanel/cd682f7/logo.png" alt="Mixpanel" height="32"></a> <a href="https://www.vpsserver.com"><img src="https://images.opencollective.com/vpsservercom/logo.png" alt="VPS Server" height="32"></a> <a href="https://icons8.com"><img src="https://images.opencollective.com/icons8/7fa1641/logo.png" alt="Icons8: free icons, photos, illustrations, and music" height="32"></a> <a href="https://discordapp.com"><img src="https://images.opencollective.com/discordapp/7e3d9a9/logo.png" alt="Discord" height="32"></a> <a href="https://themeisle.com"><img src="https://images.opencollective.com/themeisle/d5592fe/logo.png" alt="ThemeIsle" height="32"></a> <a href="https://www.firesticktricks.com"><img src="https://images.opencollective.com/fire-stick-tricks/b8fbe2c/logo.png" alt="Fire Stick Tricks" height="32"></a></p>
+<p><a href="#"><img src="https://images.opencollective.com/2021-frameworks-fund/logo.png" alt="Chrome Frameworks Fund" height="undefined"></a> <a href="https://automattic.com"><img src="https://images.opencollective.com/automattic/d0ef3e1/logo.png" alt="Automattic" height="undefined"></a></p><h3>Gold Sponsors</h3>
+<p><a href="https://engineering.salesforce.com"><img src="https://images.opencollective.com/salesforce/ca8f997/logo.png" alt="Salesforce" height="96"></a> <a href="https://www.airbnb.com/"><img src="https://images.opencollective.com/airbnb/d327d66/logo.png" alt="Airbnb" height="96"></a></p><h3>Silver Sponsors</h3>
+<p><a href="https://sentry.io"><img src="https://avatars.githubusercontent.com/u/1396951?v=4" alt="Sentry" height="64"></a> <a href="https://liftoff.io/"><img src="https://images.opencollective.com/liftoff/5c4fa84/logo.png" alt="Liftoff" height="64"></a> <a href="https://opensource.siemens.com"><img src="https://avatars.githubusercontent.com/u/624020?v=4" alt="Siemens" height="64"></a> <a href="https://americanexpress.io"><img src="https://avatars.githubusercontent.com/u/3853301?v=4" alt="American Express" height="64"></a></p><h3>Bronze Sponsors</h3>
+<p><a href="https://themeisle.com"><img src="https://images.opencollective.com/themeisle/d5592fe/logo.png" alt="ThemeIsle" height="32"></a> <a href="https://nx.dev"><img src="https://images.opencollective.com/nx/0efbe42/logo.png" alt="Nx (by Nrwl)" height="32"></a> <a href="https://www.crosswordsolver.org/anagram-solver/"><img src="https://images.opencollective.com/anagram-solver/2666271/logo.png" alt="Anagram Solver" height="32"></a> <a href="https://icons8.com/"><img src="https://images.opencollective.com/icons8/7fa1641/logo.png" alt="Icons8" height="32"></a> <a href="https://discord.com"><img src="https://images.opencollective.com/discordapp/f9645d9/logo.png" alt="Discord" height="32"></a> <a href="https://transloadit.com/"><img src="https://avatars.githubusercontent.com/u/125754?v=4" alt="Transloadit" height="32"></a> <a href="https://www.ignitionapp.com"><img src="https://avatars.githubusercontent.com/u/5753491?v=4" alt="Ignition" height="32"></a> <a href="https://herocoders.com"><img src="https://avatars.githubusercontent.com/u/37549774?v=4" alt="HeroCoders" height="32"></a> <a href="https://quickbookstoolhub.com"><img src="https://avatars.githubusercontent.com/u/95090305?u=e5bc398ef775c9ed19f955c675cdc1fb6abf01df&v=4" alt="QuickBooks Tool hub" height="32"></a></p>
 <!--sponsorsend-->
 
-## <a name="technology-sponsors"></a>Technology Sponsors
+## Technology Sponsors
 
@@ -306,0 +312,0 @@ * Site search ([eslint.org](https://eslint.org)) is sponsored by [Algolia](https://www.algolia.com)

New alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Dynamic require

Supply chain risk

Dynamic require can indicate the package is performing dangerous or unsafe dynamic code execution.

Found 1 instance in 1 package

Environment variable access

Supply chain risk

Package accesses environment variables, which may be a sign of credential stuffing or data theft.

Found 1 instance in 1 package

Fixed alerts

License Policy Violation

License

This package is not allowed per your license policy. Review the package's license to ensure compliance.

Found 1 instance in 1 package

Debug access

Supply chain risk

Uses debug, reflection and dynamic code execution features.

Found 1 instance in 1 package

Dynamic require

Supply chain risk

Dynamic require can indicate the package is performing dangerous or unsafe dynamic code execution.

Found 1 instance in 1 package

Improved metrics

Number of package files

407

increased by3.04%

Lines of code

69826

increased by14.94%

Number of lines in readme file

300

increased by2.04%

Number of low supply chain risk alerts

16

decreased by-11.11%

Worsened metrics

Total package byte prevSize

2957015

decreased by-5.13%

Dev dependency count

60

increased by27.66%

Dependency changes

• + Added@eslint-community/eslint-utils@^4.2.0

• + Added@eslint-community/regexpp@^4.6.1

• + Added@eslint/js@8.50.0

• + Added@humanwhocodes/config-array@^0.11.11

• + Added@humanwhocodes/module-importer@^1.0.1

• + Added@nodelib/fs.walk@^1.2.8

• + Addedescape-string-regexp@^4.0.0

• + Addedfast-deep-equal@^3.1.3

• + Addedfind-up@^5.0.0

• + Addedgraphemer@^1.4.0

• + Addedis-path-inside@^3.0.3

• + Addedlodash.merge@^4.6.2

• + Added@eslint-community/eslint-utils@4.4.0(transitive)

• + Added@eslint-community/regexpp@4.11.1(transitive)

• + Added@eslint/eslintrc@2.1.4(transitive)

• + Added@eslint/js@8.50.0(transitive)

• + Added@humanwhocodes/config-array@0.11.14(transitive)

• + Added@humanwhocodes/module-importer@1.0.1(transitive)

• + Added@humanwhocodes/object-schema@2.0.3(transitive)

• + Added@nodelib/fs.scandir@2.1.5(transitive)

• + Added@nodelib/fs.stat@2.0.5(transitive)

• + Added@nodelib/fs.walk@1.2.8(transitive)

• + Addedacorn@8.12.1(transitive)

• + Addedargparse@2.0.1(transitive)

• + Addedescape-string-regexp@4.0.0(transitive)

• + Addedeslint-scope@7.2.2(transitive)

• + Addedeslint-visitor-keys@3.4.3(transitive)

• + Addedespree@9.6.1(transitive)

• + Addedfastq@1.17.1(transitive)

• + Addedfind-up@5.0.0(transitive)

• + Addedglob-parent@6.0.2(transitive)

• + Addedglobals@13.24.0(transitive)

• + Addedgraphemer@1.4.0(transitive)

• + Addedignore@5.3.2(transitive)

• + Addedis-path-inside@3.0.3(transitive)

• + Addedjs-yaml@4.1.0(transitive)

• + Addedlocate-path@6.0.0(transitive)

• + Addedlodash.merge@4.6.2(transitive)

• + Addedp-limit@3.1.0(transitive)

• + Addedp-locate@5.0.0(transitive)

• + Addedpath-exists@4.0.0(transitive)

• + Addedqueue-microtask@1.2.3(transitive)

• + Addedreusify@1.0.4(transitive)

• + Addedrun-parallel@1.2.0(transitive)

• + Addedtype-fest@0.20.2(transitive)

• + Addedyocto-queue@0.1.0(transitive)

• - Removed@babel/code-frame@7.12.11

• - Removedenquirer@^2.3.5

• - Removedeslint-utils@^2.1.0

• - Removedfunctional-red-black-tree@^1.0.1

• - Removedimport-fresh@^3.0.0

• - Removedlodash@^4.17.20

• - Removedprogress@^2.0.0

• - Removedregexpp@^3.1.0

• - Removedsemver@^7.2.1

• - Removedstrip-json-comments@^3.1.0

• - Removedtable@^6.0.4

• - Removedv8-compile-cache@^2.0.3

• - Removed@babel/code-frame@7.12.11(transitive)

• - Removed@babel/helper-validator-identifier@7.24.7(transitive)

• - Removed@babel/highlight@7.24.7(transitive)

• - Removed@eslint/eslintrc@0.3.0(transitive)

• - Removedacorn@7.4.1(transitive)

• - Removedajv@8.17.1(transitive)

• - Removedansi-colors@4.1.3(transitive)

• - Removedansi-styles@3.2.1(transitive)

• - Removedargparse@1.0.10(transitive)

• - Removedastral-regex@2.0.0(transitive)

• - Removedchalk@2.4.2(transitive)

• - Removedcolor-convert@1.9.3(transitive)

• - Removedcolor-name@1.1.3(transitive)

• - Removedemoji-regex@8.0.0(transitive)

• - Removedenquirer@2.4.1(transitive)

• - Removedescape-string-regexp@1.0.5(transitive)

• - Removedeslint-scope@5.1.1(transitive)

• - Removedeslint-utils@2.1.0(transitive)

• - Removedeslint-visitor-keys@1.3.02.1.0(transitive)

• - Removedespree@7.3.1(transitive)

• - Removedesprima@4.0.1(transitive)

• - Removedestraverse@4.3.0(transitive)

• - Removedfast-uri@3.0.1(transitive)

• - Removedfunctional-red-black-tree@1.0.1(transitive)

• - Removedglob-parent@5.1.2(transitive)

• - Removedglobals@12.4.0(transitive)

• - Removedhas-flag@3.0.0(transitive)

• - Removedignore@4.0.6(transitive)

• - Removedis-fullwidth-code-point@3.0.0(transitive)

• - Removedjs-tokens@4.0.0(transitive)

• - Removedjs-yaml@3.14.1(transitive)

• - Removedjson-schema-traverse@1.0.0(transitive)

• - Removedlodash@4.17.21(transitive)

• - Removedlodash.truncate@4.4.2(transitive)

• - Removedpicocolors@1.1.0(transitive)

• - Removedprogress@2.0.3(transitive)

• - Removedregexpp@3.2.0(transitive)

• - Removedrequire-from-string@2.0.2(transitive)

• - Removedsemver@7.6.3(transitive)

• - Removedslice-ansi@4.0.0(transitive)

• - Removedsprintf-js@1.0.3(transitive)

• - Removedstring-width@4.2.3(transitive)

• - Removedsupports-color@5.5.0(transitive)

• - Removedtable@6.8.2(transitive)

• - Removedtype-fest@0.8.1(transitive)

• - Removedv8-compile-cache@2.4.0(transitive)

• Updated@eslint/eslintrc@^2.1.2

• Updatedajv@^6.12.4

• Updateddebug@^4.3.2

• Updatedeslint-scope@^7.2.2

• Updatedeslint-visitor-keys@^3.4.3

• Updatedespree@^9.6.1

• Updatedesquery@^1.4.2

• Updatedfile-entry-cache@^6.0.1

• Updatedglob-parent@^6.0.2

• Updatedglobals@^13.19.0

• Updatedignore@^5.2.0

• Updatedjs-yaml@^4.1.0

• Updatedminimatch@^3.1.2

• Updatedoptionator@^0.9.3

• Updatedstrip-ansi@^6.0.1