@biomejs/biome - npm Package Versions

Now Biome can detect the script language in Svelte and Vue script blocks more reliably (#2245). Contributed by @Sec-ant
useExhaustiveDependencies no longer reports recursive calls as missing dependencies (#2361). Contributed by @arendjr
useExhaustiveDependencies correctly reports missing dependencies declared using function declarations (#2362). Contributed by @arendjr
Biome now can handle .svelte and .vue files with CRLF as the end-of-line sequence. Contributed by @Sec-ant
noMisplacedAssertion no longer reports method calls by describe, test, it objects (e.g. test.each([])()) (#2443). Contributed by @unvalley.
Biome now can handle .vue files with generic components (#2456).
```
<script generic="T extends Record<string, any>" lang="ts" setup>
//...
</script>
```
Contributed by @Sec-ant

Enhancements

Complete the well-known file lists for JSON-like files. Trailing commas are allowed in .jsonc files by default. Some well-known files like tsconfig.json and .babelrc don't use the .jsonc extension but still allow comments and trailing commas. While others, such as .eslintrc.json, only allow comments. Biome is able to identify these files and adjusts the json.parser.allowTrailingCommas option accordingly to ensure they are correctly parsed. Contributed by @Sec-ant
Fix dedent logic inconsistent with prettier where the indent-style is space and the indent-width is not 2. Contributed by @mdm317

CLI

New features

Add a command to migrate from ESLint

biome migrate eslint allows you to migrate an ESLint configuration to Biome. The command supports legacy ESLint configurations and new flat ESLint configurations. Legacy ESLint configurations using the YAML format are not supported.

When loading a legacy ESLint configuration, Biome resolves the extends field. It resolves both shared configurations and plugin presets! To do this, it invokes Node.js.

Biome relies on the metadata of its rules to determine the equivalent rule of an ESLint rule. A Biome rule is either inspired or roughly identical to an ESLint rules. By default, inspired and nursery rules are excluded from the migration. You can use the CLI flags --include-inspired and --include-nursery to migrate them as well.

Note that this is a best-effort approach. You are not guaranteed to get the same behavior as ESLint.

Given the following ESLint configuration:
```
{
      "ignore_patterns": ["**/*.test.js"],
      "globals": { "var2": "readonly" },
      "rules": {
          "eqeqeq": "error"
      },
      "overrides": [{
          "files": ["lib/*.js"],
          "rules": {
            "default-param-last": "off"
          }
      }]
}
```
biome migrate eslint --write changes the Biome configuration as follows:
```
{
  "linter": {
    "rules": {
      "recommended": false,
      "suspicious": {
        "noDoubleEquals": "error"
      }
    }
  },
  "javascript": { "globals": ["var2"] },
  "overrides": [{
    "include": ["lib/*.js"],
    "linter": {
      "rules": {
        "style": {
          "useDefaultParameterLast": "off"
        }
      }
    }
  }]
}
```
Also, if the working directory contains .eslintignore, then Biome migrates the glob patterns. Nested .eslintignore in subdirectories and negated glob patterns are not supported.

If you find any issue, please don't hesitate to report them.

Contributed by @Conaclos
Added two new options to customise the emitted output of the CLI: --reporter=json and --reporter=json-pretty. With --reporter=json, the diagnostics and the summary will be printed in the terminal in JSON format. With --reporter=json-pretty, you can print the same information, but formatted using the same options of your configuration.

NOTE: the shape of the JSON is considered experimental, and the shape of the JSON might change in the future.
<details> <summary>Example of output when running `biome format` command</summary> ```json { "summary": { "changed": 0, "unchanged": 1, "errors": 1, "warnings": 0, "skipped": 0, "suggestedFixesSkipped": 0, "diagnosticsNotPrinted": 0 }, "diagnostics": [ { "category": "format", "severity": "error", "description": "Formatter would have printed the following content:", "message": [ { "elements": [], "content": "Formatter would have printed the following content:" } ], "advices": { "advices": [ { "diff": { "dictionary": " statement();\n", "ops": [ { "diffOp": { "delete": { "range": [0, 2] } } }, { "diffOp": { "equal": { "range": [2, 12] } } }, { "diffOp": { "delete": { "range": [0, 2] } } }, { "diffOp": { "equal": { "range": [12, 13] } } }, { "diffOp": { "delete": { "range": [0, 2] } } }, { "diffOp": { "insert": { "range": [13, 15] } } } ] } } ] }, "verboseAdvices": { "advices": [] }, "location": { "path": { "file": "format.js" }, "span": null, "sourceCode": null }, "tags": [], "source": null } ], "command": "format" } ``` </details>
Added new --staged flag to the check, format and lint subcommands.

This new option allows users to apply the command only to the files that are staged (the ones that will be committed), which can be very useful to simplify writing git hook scripts such as pre-commit. Contributed by @castarco

Enhancements

Improve support of .prettierignore when migrating from Prettier

Now, Biome translates most of the glob patterns in .prettierignore to the equivalent Biome ignore pattern. Only negated glob patterns are not supported.

Contributed by @Conaclos
Support JavaScript configuration files when migrating from Prettier

biome migrate prettier is now able to migrate Prettier configuration files ending with js, mjs, or cjs extensions. To do this, Biome invokes Node.js.

Also, embedded Prettier configurations in package.json are now supported.

Contributed by @Conaclos
Support overrides field in Prettier configuration files when migrating from Prettier. Contributed by @Conaclos
Support passing a file path to the --config-path flag or the BIOME_CONFIG_PATH environment variable.

Now you can pass a .json/.jsonc file path with any filename to the --config-path flag or the BIOME_CONFIG_PATH environment variable. This will disable the configuration auto-resolution and Biome will try to read the configuration from the said file path (#2265).
```
biome format --config-path=../biome.json ./src
```
Contributed by @Sec-ant

Bug fixes

Biome now tags the diagnostics emitted by organizeImports and formatter with correct severity levels, so they will be properly filtered by the flag --diagnostic-level (#2288). Contributed by @Sec-ant
Biome now correctly filters out files that are not present in the current directory when using the --changed flag #1996. Contributed by @castarco
Biome now skips traversing fifo or socket files (#2311). Contributed by @Sec-ant
Biome now resolves configuration files exported from external libraries in extends from the working directory (CLI) or project root (LSP). This is the documented behavior and previous resolution behavior is considered as a bug (#2231). Contributed by @Sec-ant

Configuration

Bug fixes

Now setting group level all to false can disable recommended rules from that group when top level recommended is true or unset. Contributed by @Sec-ant
Biome configuration files can correctly extends .jsonc configuration files now (#2279). Contributed by @Sec-ant
Fixed the JSON schema for React hooks configuration (#2396). Contributed by @arendjr

Enhancements

Biome now displays the location of a parsing error for its configuration file (#1627).

Previously, when Biome encountered a parsing error in its configuration file, it didn't indicate the location of the error. It now displays the name of the configuration file and the range where the error occurred.

Contributed by @Conaclos
options is no longer required for rules without any options (#2313).

Previously, the JSON schema required to set options to null when an object is used to set the diagnostic level of a rule without any option. However, if options is set to null, Biome emits an error.

The schema is now fixed and it no longer requires specifying options. This makes the following configuration valid:
```
{
  "linter": {
    "rules": {
      "style": {
        "noDefaultExport": {
          "level": "off"
        }
      }
    }
  }
}
```
Contributed by @Conaclos

Editors

Bug fixes

Biome extension is now able to parse the JSX syntax in files that associated with the javascript language identifier. This is an ad hoc fix, because in the React world, .js files are allowed to include JSX syntax, and these files are often associated with the javascript language identifier in most of the editors. Plus, some editor extensions will also associate .jsx files with the javascript language identifier. Relative links: discussion, #2085. Contributed by @Sec-ant

Formatter

Bug fixes

Fix #2291 by correctly handle comment placement for JSX spread attributes and JSX spread children. Contributed by @ah-yu

JavaScript APIs

Linter

Promoted rules

New rules are incubated in the nursery group. Once stable, we promote them to a stable group. The following rules are promoted:

New features

Add a new option jsxRuntime to the javascript configuration. When set to reactClassic, the noUnusedImports and useImportType rules use this information to make exceptions for the React global that is required by the React Classic JSX transform.

This is only necessary for React users who haven't upgraded to the new JSX transform.

Contributed by @Conaclos and @arendjr
Implement #2043: The React rule useExhaustiveDependencies is now also compatible with Preact hooks imported from preact/hooks or preact/compat. Contributed by @arendjr
Add rule noFlatMapIdentity to disallow unnecessary callback use on flatMap. Contributed by @isnakode
Add rule noConstantMathMinMaxClamp, which disallows using Math.min and Math.max to clamp a value where the result itself is constant. Contributed by @mgomulak

Enhancements

style/useFilenamingConvention now allows prefixing a filename with + (#2341).

This is a convention used by Sveltekit and Vike.

Contributed by @Conaclos
style/useNamingConvention now accepts PascalCase for local and top-level variables.

This allows supporting local variables that hold a component or a regular class. The following code is now accepted:
```
function loadComponent() {
  const Component = getComponent();
  return <Component />;
}
```
Contributed by @Conaclos
complexity/useLiteralKeys no longer report computed properties named __proto__ (#2430).

In JavaScript, {["__proto__"]: null} and {__proto__: null} have not the same semantic. The first code set a regular property to null. The second one set the prototype of the object to null. See the MDN Docs for more details.

The rule now ignores computed properties named __proto__.

Contributed by @Conaclos

Bug fixes

Lint rules useNodejsImportProtocol, useNodeAssertStrict, noRestrictedImports, noNodejsModules will no longer check declare module statements anymore. Contributed by @Sec-ant
style/useNamingConvention now accepts any case for variables from object destructuring (#2332).

The following name is now ignored:
```
const { Strange_Style } = obj;
```
Previously, the rule renamed this variable. This led to a runtime error.

Contributed by @Conaclos

Parser

Bug fixes

Fixed an issue when Unicode surrogate pairs were encoded in JavaScript strings using an escape sequence (#2384). Contributed by @arendjr

1.6.4-nightly.abab451

Diff

dominionl

published 1.6.4-nightly.abab451 • 3 months ago

1.6.4-nightly.a995ada

Diff

dominionl

published 1.6.4-nightly.a995ada • 3 months ago

1.6.4

Diff

dominionl

published 1.6.4 • 3 months ago

Changelog

Source

1.6.4 (2024-04-03)

Analyzer

Bug fixes

An operator with no spaces around in a binary expression no longer breaks the js analyzer (#2243). Contributed by @Sec-ant

CLI

Bug fixes

Fix the printed error count (#2048). Contributed by @Sec-ant

Configuration

Bug fixes

Correctly calculate enabled rules in lint rule groups. Now a specific rule belonging to a group can be enabled even if its group-level preset option recommended or all is false (#2191). Contributed by @Sec-ant

Editors

Bug fixes

Fix the unexpected code deletion and repetition when quickfix.biome is enabled and some import-related rules are applied (#2222, #688, #1015). Contributed by @Sec-ant

Linter

New features

Add nursery/noMisplacedAssertion. COntributed by @ematipico

Bug fixes

Fix #2211. noChildrenProp should work fine when children pass as a prop in a new line. Contributed by @fireairforce
Fix #2248. lint/a11y/useButtonType should not trigger when button element with spread attribute. Contributed by @fireairforce
Fix #2216. lint/style/useNamingConvention should not ignore JSX Component name binding. Contributed by @fireairforce

Enhancements

Add support for object property members in the rule useSortedClasses. Contributed by @ematipico

Parser

The parser doesn't throw any error when the frontmatter of .astro files contains an illegal return:
```
---
const condition = true;
if (condition) {
  return "Something";
}
---
<div></div>
```
Contributed by @ematipico

1.6.3

Diff

dominionl

published 1.6.3 • 3 months ago

Changelog

Source

1.6.3 (2024-03-25)

CLI

Bug fixes

Fix configuration resolution. Biome is now able to correctly find the biome.jsonc configuration file when --config-path is explicitly set (#2164). Contributed by @Sec-ant
JavaScript/TypeScript files of different variants (.ts, .js, .tsx, .jsx) in a single workspace now have stable formatting behaviors when running the CLI command in paths of different nested levels or in different operating systems (#2080, #2109). Contributed by @Sec-ant

Configuration

Bug fixes

Complete the documentation and overrides support for options formatter.lineEnding, [language].formatter.lineEnding, formatter.attributePosition and javascript.formatter.attributePosition. Contributed by @Sec-ant

Formatter

Bug fixes

Fix #2172 by breaking long object destructuring patterns. Contributed by @ah-yu

Linter

New features

Add rule noEvolvingAny to disallow variables from evolving into any type through reassignments. Contributed by @fujiyamaorange

Enhancements

Rename noSemicolonInJsx to noSuspiciousSemicolonInJsx. Contributed by @fujiyamaorange

LSP

Bug fixes

Quickfix action no longer autofixes lint rule errors on save when linter is disabled (#2161). Contributed by @Sec-ant
Range formatting for Astro/Svelte/Vue doesn't place code out of place, especially when formatting on paste is enabled. Contributed by @ematipico

1.6.2

Diff

dominionl

published 1.6.2 • 3 months ago

Changelog

Source

1.6.2 (2024-03-22)

Analyzer

Bug fixes

The noSuperWithoutExtends rule now allows for calling super() in derived class constructors of class expressions (#2108). Contributed by @Sec-ant
Fix discrepancies on file source detection. Allow module syntax in .cts files (#2114). Contributed by @Sec-ant

CLI

Bug fixes

Fixes #2131, where folders were incorrectly ignored when running the command check. Now folders are correctly ignored based on their command. Contributed by @ematipico
Smoother handling of "endOfLine": "auto" in prettier migration: falling back to "lf" (#2145). Contributed by @eMerzh

Configuration

Bug fixes

Fix enabled rules calculation. The precendence of individual rules, all and recommend presets in top-level and group-level configs is now correctly respected. More details can be seen in (#2072) (#2028). Contributed by @Sec-ant

Formatter

Bug fixes

Fix #1661. Now nested conditionals are aligned with Prettier's logic, and won't contain mixed spaces and tabs. Contributed by @ematipico

JavaScript APIs

Enhancements

Support applying lint fixes when calling the lintContent method of the Biome class (#1956). Contributed by @mnahkies

Linter

New features

Add nursery/noDuplicateElseIf. COntributed by @mdm317

Bug fixes

Rule noUndeclaredDependencies now also validates peerDependencies and optionalDependencies (#2122). Contributed by @Sec-ant
Rule noUndeclaredDependencies won't check declare module statements anymore (#2123). Contributed by @Sec-ant
Fix #1925. The fix for useOptionalChain would sometimes suggest an incorrect fix that discarded optional chaining operators on the left-hand side of logical expressions. These are now preserved. Contributed by @arendjr
Rule noUndeclaredVariables now also checks for worker globals (#2121). Contributed by @Sec-ant

LSP

Bug fixes

Correctly parse .jsonc files. Contributed by @Sec-ant
Correctly resolve external extends configs. Contributed by @Sec-ant

1.6.1

Diff

dominionl

published 1.6.1 • 4 months ago

Changelog

Source

1.6.1 (2024-03-12)

CLI

Bug fixes

CLI is now able to automatically search and resolve biome.jsonc (#2008). Contributed by @Sec-ant
Fix a false positive where some files were counted as "fixed" even though they weren't modified. Contributed by @ematipico

Configuration

Bug fixes

json.formatter.trailingCommas option now works in overrides (#2009). Contributed by @Sec-ant

Linter

New features

Add rule noDoneCallback, this rule checks the function parameter of hooks & tests for use of the done argument, suggesting you return a promise instead. Contributed by @vasucp1207
```
beforeEach(done => {
  // ...
});
```

Bug fixes

useJsxKeyInIterable now recognizes function bodies wrapped in parentheses (#2011). Contributed by @Sec-ant
useShorthandFunctionType now preserves type parameters of generic interfaces when applying fixes (#2015). Contributed by @Sec-ant
Code fixes of useImportType and useExportType now handle multiline statements (#2041). Contributed by @Conaclos
noRedeclare no longer reports type parameter and parameter with identical names (#1992).

The following code is no longer reported:
```
function f<a>(a: a) {}
```
Contributed by @Conaclos
noRedeclare now reports duplicate type parameters in a same declaration.

The following type parameters are now reported as a redeclaration:
```
function f<T, T>() {}
```
Contributed by @Conaclos
noUndeclaredDependencies now recognizes imports of subpath exports.

E.g., the following import statements no longer report errors if @mui/material and tailwindcss are installed as dependencies:
```
import Button from "@mui/material/Button";
import { fontFamily } from "tailwindcss/defaultTheme";
```
Contributed by @Sec-ant

Parser

Bug fixes

JavaScript lexer is now able to lex regular expression literals with escaped non-ascii chars (#1941).

Contributed by @Sec-ant

1.6.0

Diff

dominionl

published 1.6.0 • 4 months ago

Changelog

Source

1.6.0 (2024-03-08)

Analyzer

New features

Add partial for .astro files. Biome is able to sort imports inside the frontmatter of the Astro files. Contributed by @ematipico

---
- import { getLocale } from "astro:i18n";
- import { Code } from "astro:components";
+ import { Code } from "astro:components";
+ import { getLocale } from "astro:i18n";
---

<div></div>

Add partial for .vue files. Biome is able to sort imports inside the script block of Vue files. Contributed by @nhedger

<script setup lang="ts">
- import Button from "./components/Button.vue";
- import * as vueUse from "vue-use";
+ import * as vueUse from "vue-use";
+ import Button from "./components/Button.vue";
</script/>

<template></template>

Add partial for .svelte files. Biome is able to sort imports inside the script block of Svelte files. Contributed by @ematipico

<script setup lang="ts">
- import Button from "./components/Button.svelte";
- import * as svelteUse from "svelte-use";
+ import * as svelteUse from "svelte-use";
+ import Button from "./components/Button.svelte";
</script/>

<div></div>

The analyzer now infers the correct quote from javascript.formatter.quoteStyle, if set. This means that code fixes suggested by the analyzer will use the same quote of the formatter. Contributed by @ematipico

Enhancements

noUnusedVariables ignores unused rest spread siblings.

The following code is now valid:
```
const { a, ...rest } = { a: 0, b: 1 };
console.log(rest);
```
Contributed by @ah-yu
Fix #1931. Built-in React hooks such as useEffect() can now be validated by the useExhaustiveDependendies, even when they're not being imported from the React library. To do so, simply configure them like any other user-provided hooks.

Contributed by @arendjr

Implemented #1128. User-provided React hooks can now be configured to track stable results. For example:

"useExhaustiveDependencies": {
    "level": "error",
    "options": {
        "hooks": [{
            "name": "useMyState",
            "stableResult": [
                1
            ]
        }]
    }
}

This will allow the following to be validated:

const [myState, setMyState] = useMyState();
const toggleMyState = useCallback(() => {
  setMyState(!myState);
}, [myState]); // Only `myState` needs to be specified here.

Contributed by @arendjr

Bug fixes

Fix #1748. Now for the following case we won't provide an unsafe fix for the noNonNullAssertion rule:
```
x[y.z!];
```
Contributed by @ah-yu

Imports that contain the protocol : are now sorted after the npm: modules, and before the URL modules. Contributed by @ematipico

import express from "npm:express";
- import Component from "./component.js"
- import { sortBy } from "virtual:utils";
+ import { sortBy } from "virtual:utils";
+ import Component from "./component.js"

Fix #1081. The useAwait rule does not report for await...of. Contributed by @unvalley
Fix #1827 by properly analyzing nested try-finally statements. Contributed by @ah-yu
Fix #1924 Use the correct export name to sort in the import clause. Contributed by @ah-yu
Fix #1805 fix formatting arrow function which has conditional expression body Contributed by @mdm317
Fix #1781 by avoiding the retrieval of the entire static member expression for the reference if the static member expression does not start with the reference. Contributed by @ah-yu

CLI

New features

Add a new command biome migrate prettier. The command will read the file .prettierrc/prettier.json and .prettierignore and map its configuration to Biome's one. Due to the different nature of .prettierignore globs and Biome's globs, it's highly advised to make sure that those still work under Biome.
Now the file name printed in the diagnostics is clickable. If you run the CLI from your editor, you can <kbd> Ctrl</kbd>/<kbd title="Cmd">⌘</kbd> + Click on the file name, and the editor will open said file. If row and columns are specified e.g. file.js:32:7, the editor will set the cursor right in that position. Contributed by @ematipico
Add an option --linter to biome rage. The option needs to check Biome linter configuration. Contributed by @seitarof
Add an option --formatter to biome rage. The option needs to check Biome formatter configuration. Contributed by @seitarof
The CLI now consistently reports the number of files tha were changed, out of the total files that were analysed. Contributed by @ematipico
The CLI now consistently shows the number of errors and warnings emitted. Contributed by @ematipico

Bug fixes

Don't process files under an ignored directory.

Previously, Biome processed all files in the traversed hierarchy, even the files under an ignored directory. Now, it completely skips the content of ignored directories.

For now, directories cannot be ignored using files.include in the configuration file. This is a known limitation that we want to address in a future release.

For instance, if you have a project with a folder src and a folder test, the following configuration doesn't completely ignore test.
```
{
  "files": {
    "include": ["src"]
  }
}
```
Biome will traverse test, however all files of the directory are correctly ignored. This can result in file system errors, if Biome encounters dangling symbolic links or files with higher permissions.

To avoid traversing the test directory, you should ignore the directory using ignore:
```
{
  "files": {
    "include": ["src"],
    "ignore": ["test"]
  }
}
```
Fix #1508 by excluding deleted files from being processed. Contributed by @ematipico
Fix #1173. Fix the formatting of a single instruction with commented in a control flow body to ensure consistency. Contributed by @mdm317
Fix overriding of javascript.globals. Contributed by @arendjr

Fix a bug where syntax rules weren't run when pulling the diagnostics. Now Biome will emit more parsing diagnostics, e.g.

check.js:1:17 parse/noDuplicatePrivateClassMembers ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × Duplicate private class member "#foo"

  > 1 │ class A { #foo; #foo }
      │                 ^^^^

Contributed by @ematipico

Fix #1774 by taking into account the option --no-errors-on-unmatched when running the CLI using --changed. Contributed by @antogyn

Enhancements

Removed a superfluous diagnostic that was printed during the linting/check phase of a file:

test.js check ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × The file contains diagnostics that needs to be addressed.

Contributed by @ematipico

The command format now emits parsing diagnostics if there are any, and it will terminate with a non-zero exit code. Contributed by @ematipico

Configuration

New features

Add the ability to resolve the configuration files defined inside extends from the node_modules/ directory.

If you want to resolve a configuration file that matches the specifier @org/configs/biome, then your package.json file must look this:
```
{
  "name": "@org/configs",
  "exports": {
    "./biome": "./biome.json"
  }
}
```
And the biome.json file that "imports" said configuration, will look like this:
```
{
  "extends": "@org/configs/biome"
}
```
Read the documentation to better understand how it works, expectations and restrictions.

Editors

Bug fixes

Fix a regression where ignored files where formatted in the editor. Contributed by @ematipico

Fix a bug where syntax rules weren't run when pulling the diagnostics. Now Biome will emit more parsing diagnostics, e.g.

check.js:1:17 parse/noDuplicatePrivateClassMembers ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

  × Duplicate private class member "#foo"

  > 1 │ class A { #foo; #foo }
      │                 ^^^^

Contributed by @ematipico

Formatter

New features

Biome now allows to format the package.json file. This is now the default behaviour and users can remove their workarounds. If you rely on other tools to format package.json, you'll have to ignore it via configuration. Contributed by @pattrickrice
New formatter option attributePosition that have similar behavior as Prettier singleAttributePerLine #1706. Contributed by @octoshikari
Add partial for .astro files. Biome is able to format the frontmatter of the Astro files. Contributed by @ematipico
```
---
- statement ( );
+ statement();
---

<div></div>
```
Add partial for .vue files. Biome is able to format the script block of Vue files. Contributed by @nhedger
```
<script setup lang="ts">
- statement ( );
+ statement();
</script/>

<template></template>
```
Add partial for .svelte files. Biome is able to format the script block of Svelte files. Contributed by @ematipico
```
<script setup lang="ts">
- statement ( );
+ statement();
</script/>

<div></div>
```

Enhancements

composer.json, deno.json, jsconfig.json, package.json and tsconfig.json are no longer protected files.

This means that you can now format them.

If you want to ignore these files, you can use the files.ignore configuration:
```
{
  "files": {
    "ignore": [
      "composer.json",
      "jsconfig.json",
      "package.json",
      "tsconfig.json",
      "typescript.json",
      "deno.json",
      "deno.jsonc"
    ]
  }
}
```
The following files are still protected, and thus ignored:
- composer.lock
- npm-shrinkwrap.json
- package-lock.json
- yarn.lock
Contributed by @pattrickrice and @Conaclos

Bug fixes

Fix #1039. Check unicode width instead of number of bytes when checking if regex expression is a simple argument.

This no longer breaks.
```
s(/🚀🚀/).s().s();
```
Contributed by @kalleep
Fix #1218, by correctly preserving empty lines in member chains. Contributed by @ah-yu
Fix #1659 and #1662, by correctly taking into account the leading comma inside the formatter options. Contributed by @ematipico
Fix #1934. Fix invalid formatting of long arrow function for AsNeeded arrow parens Contributed by @fireairforce

JavaScript APIs

Linter

Promoted rules

New rules are incubated in the nursery group. Once stable, we promote them to a stable group. The following rules are promoted:

Additionally, the following rules are now recommended:

Removed rules

Remove nursery/useGroupedTypeImport. The rule style/useImportType covers the behavior of this rule.

Note that removing a nursery rule is not considered a breaking change according to our semantic versioning.

Contributed by @Conaclos

New features

Add the rule noSkippedTests, to disallow skipped tests:
```
describe.skip("test", () => {});
it.skip("test", () => {});
```
Contributed by @ematipico
Add the rule noFocusedTests, to disallow skipped tests:
```
describe.only("test", () => {});
it.only("test", () => {});
```
Contributed by @ematipico
Add rule useSortedClasses, to sort CSS utility classes:
```
- <div class="px-2 foo p-4 bar" />
+ <div class="foo bar p-4 px-2" />
```
Contributed by @DaniGuardiola
Add rule noUndeclaredDependencies, to detect the use of dependencies that aren't present in the package.json.

The rule ignores imports using a protocol such as node:, bun:, jsr:, https:.

Contributed by @ematipico and @Conaclos
Add rule noNamespaceImport, to report namespace imports:
```
import * as foo from "foo";
```
Contributed by @unvalley
Add partial support for .astro files. Biome is able to lint and fix the frontmatter of the Astro files. Contributed by @ematipico
```
---
- delete a.b
+ a.b = undefined
---

<div></div>
```
Add partial support for .vue files. Biome is able to lint and fix the script block of the Vue files.
```
<script setup lang="ts">
- delete a.b
+ a.b = undefined
<script>

<template></template>
```
Contributed by @nhedger
Add rule useNodeAssertStrict, which promotes the use of node:assert/strict over node:assert. Contributed by @ematipico
Add rule noExportsInTest which disallows export or modules.exports in files containing test. Contributed by @ah-yu
Add rule noSemicolonInJsx to detect possible wrong semicolons inside JSX elements.
```
const Component = () => {
  return (
    <div>
      <div />;
    </div>
  );
}
```
Contributed by @fujiyamaorange
Add rule noBarrelFile, to report the usage of barrel file:
```
export * from "foo";
```
Contributed by @togami2864
Add rule noReExportAll that report export * from "mod". Contributed by @mdm317
Add rule noExcessiveNestedTestSuites. Contributed by @vasucp1207
Add rule useJsxKeyInIterable. Contributed by @vohoanglong0107

Enhancements

noUselessFragments now rule not triggered for jsx attributes when the fragment child is simple text.
```
export function SomeComponent() {
  return <div x-some-prop={<>Foo</>} />;
}
```
Also fixes code action when the fragment child is of type JsxExpressionChild.
```
<>
  <Hello leftIcon={<>{provider?.icon}</>} />
  {<>{provider?.icon}</>}
  <>{provider?.icon}</>
</>
```
Contributed by @vasucp1207
noUselessTernary now provides unsafe code fixes. Contributed by @vasucp1207
noApproximativeNumericConstant now provides unsafe code fixes and handle numbers without leading zero and numbers with digit separators.

The following numbers are now reported as approximated constants.
```
3.14_15; // PI
.4342; // LOG10E
```
Contributed by @Conaclos
noPrecisionLoss no longer reports number with extra zeros.

The following numbers are now valid.
```
.1230000000000000000000000;
1230000000000000000000000.0;
```
Contributed by @Conaclos
useNamingConvention now supports unicase letters (#1786).

unicase letters have a single case: they are neither uppercase nor lowercase. Previously, Biome reported names in unicase as invalid. It now accepts a name in unicase everywhere.

The following code is now accepted:
```
const 안녕하세요 = { 안녕하세요: 0 };
```
We still reject a name that mixes unicase characters with lowercase or uppercase characters: The following names are rejected:
```
const A안녕하세요 = { a안녕하세요: 0 };
```
Contributed by @Conaclos
useNamingConvention and useFilenamingConvention now provides a new option requireAscii to require identifiers to be in ASCII.

To avoid any breaking change, this option is turned off by default. We intend to turn it on in the next major release of Biome (Biome 2.0).

Set the requireAscii rule option to true to require identifiers to be in ASCII.
```
{
  "linter": {
    "rules": {
      "style": {
        "useNamingConvention": { "options": { "requireAscii": false } }
      },
      "nursery": {
        "useFilenamingConvention": { "options": { "requireAscii": false } }
      }
    }
  }
}
```
Contributed by @Conaclos
noUnusedVariables no longer reports unused imports.

We now have a dedicated rule for reporting unused imports: noUnusedImports

Contributed by @Conaclos

Bug fixes

Fix missing link in noStaticOnlyClass documentation. Contributed by @yndajas
noConfusingVoidType no longer reports valid use of the void type in conditional types (#1812).

The rule no longer reports the following code:
```
type Conditional<T> = T extends void ? Record<string, never> : T
```
Contributed by @lucasweng
noInvalidUseBeforeDeclaration no longer reports valid use of binding patterns (#1648).

The rule no longer reports the following code:
```
const { a = 0, b = a } = {};
```
Contributed by @Conaclos
noUnusedVariables no longer reports used binding patterns (#1652).

The rule no longer reports a as unused the following code:
```
const { a = 0, b = a } = {};
export { b };
```
Contributed by @Conaclos
Fix #1651. noVar now ignores TsGlobalDeclaration. Contributed by @vasucp1207
Fix #1640. useEnumInitializers code action now generates valid code when last member has a comment but no comma. Contributed by @kalleep
Fix #1653. Handle a shorthand value in useForOf to avoid the false-positive case. Contributed by @togami2864
Fix #1656. useOptionalChain code action now correctly handles logical and chains where methods with the same name are invoked with different arguments:
```
- tags && tags.includes('a') && tags.includes('b')
+ tags?.includes('a') && tags.includes('b')
```
Contributed by @lucasweng
Fix #1704. Convert / to escaped slash \/ to avoid parsing error in the result of autofix. Contributed by @togami2864
Fix#1697. Preserve leading trivia in autofix of suppression rules. Contributed by @togami2864
Fix #603. Trim trailing whitespace to avoid double insertion. Contributed by @togami2864
Fix #1765. Now the rule noDelete doesn't trigger when deleting a dataset:
```
delete element.dataset.prop;
```
Contributed by @ematipico
useNamingConvention and useFilenamingConvention now reject identifiers with consecutive delimiters.

The following name is now invalid because it includes two underscores:
```
export const MY__CONSTANT = 0;
```
Note that we still allow consecutive leading and consecutive trailing underscores.

Contributed by @Conaclos
Fix #1932 Allow redeclaration of type parameters in different declarations. Contributed by @keita-hino
Fix #1945 Allow constructor with default parameters in noUselessConstructor
Fix #1982 Change to iterate over the module item lists and ignore .d.ts files. Contributed by @togami2864

Parser

Bug fixes

Fix #1728. Correctly parse the global declaration when the { token is on the line following the global keyword.

Now the following code is correctly parsed:
```
declare global
{ }

declare module foo {
  global
  { }
}
```
Contributed by @ah-yu
Fix #1730. Correctly parse delete expressions with operands that are not simple member expressions.
```
delete(a.b);
delete console.log(1);
delete(() => {});
```
Contributed by @printfn

Website

Bug fixes

Fix #1981. Identify TypeScript definition files by their file path within the playground. Contributed by @ah-yu

1.5.3-nightly.4fa841c

Diff

dominionl

published 1.5.3-nightly.4fa841c • 4 months ago

1.5.3-nightly.69f9031

Diff

dominionl

published 1.5.3-nightly.69f9031 • 4 months ago

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1.7.0

.css-1z04cui{margin-bottom:var(--chakra-space-4);font-size:var(--chakra-fontSizes-md);}1.7.0 (2024-04-15)

Analyzer

Bug fixes

Enhancements

CLI

New features

Enhancements

Bug fixes

Configuration

Bug fixes

Enhancements

Editors

Bug fixes

Formatter

Bug fixes

JavaScript APIs

Linter

Promoted rules

New features

Enhancements

Bug fixes

Parser

Bug fixes

1.6.4-nightly.abab451

1.6.4-nightly.a995ada

1.6.4

1.6.4 (2024-04-03)

Analyzer

Bug fixes

CLI

Bug fixes

Configuration

Bug fixes

Editors

Bug fixes

Linter

New features

Bug fixes

Enhancements

Parser

1.6.3

1.6.3 (2024-03-25)

CLI

Bug fixes

Configuration

Bug fixes

Formatter

Bug fixes

Linter

New features

Enhancements

LSP

Bug fixes

1.6.2

1.6.2 (2024-03-22)

Analyzer

Bug fixes

CLI

Bug fixes

Configuration

Bug fixes

Formatter

Bug fixes

JavaScript APIs

Enhancements

Linter

New features

Bug fixes

LSP

Bug fixes

1.6.1

1.6.1 (2024-03-12)

CLI

Bug fixes

Configuration

Bug fixes

Linter

New features

Bug fixes

1.7.0 (2024-04-15)