css-loader - npm Package Compare versions

Comparing version 5.2.2 to 5.2.3

CHANGELOG.md

@@ -5,2 +5,8 @@ # Changelog
 
+### [5.2.3](https://github.com/webpack-contrib/css-loader/compare/v5.2.2...v5.2.3) (2021-04-19)
+
+### Bug Fixes
+
+* improve performance
+
 ### [5.2.2](https://github.com/webpack-contrib/css-loader/compare/v5.2.1...v5.2.2) (2021-04-16)
@@ -7,0 +13,0 @@

dist/plugins/postcss-import-parser.js

@@ -22,3 +22,3 @@ "use strict";
     const lastCommentIndex = atRule.raws.afterName.lastIndexOf("/*");
-    const matched = atRule.raws.afterName.slice(lastCommentIndex).match(_utils.webpackIgnoreCommentRegexp);
+    const matched = atRule.raws.afterName.slice(lastCommentIndex).match(_utils.WEBPACK_IGNORE_COMMENT_REGEXP);
 
@@ -33,3 +33,3 @@ if (matched && matched[2] === "true") {
   if (prevNode && prevNode.type === "comment") {
-    const matched = prevNode.text.match(_utils.webpackIgnoreCommentRegexp);
+    const matched = prevNode.text.match(_utils.WEBPACK_IGNORE_COMMENT_REGEXP);
 
@@ -36,0 +36,0 @@ if (matched && matched[2] === "true") {

dist/plugins/postcss-url-parser.js

@@ -48,3 +48,3 @@ "use strict";
 
-  const matched = prevValueNode.value.match(_utils.webpackIgnoreCommentRegexp);
+  const matched = prevValueNode.value.match(_utils.WEBPACK_IGNORE_COMMENT_REGEXP);
   return matched && matched[2] === "true";
@@ -78,3 +78,3 @@ }
     const lastCommentIndex = declaration.raws.between.lastIndexOf("/*");
-    const matched = declaration.raws.between.slice(lastCommentIndex).match(_utils.webpackIgnoreCommentRegexp);
+    const matched = declaration.raws.between.slice(lastCommentIndex).match(_utils.WEBPACK_IGNORE_COMMENT_REGEXP);
 
@@ -90,3 +90,3 @@ if (matched) {
   if (prevNode && prevNode.type === "comment") {
-    const matched = prevNode.text.match(_utils.webpackIgnoreCommentRegexp);
+    const matched = prevNode.text.match(_utils.WEBPACK_IGNORE_COMMENT_REGEXP);
 
@@ -93,0 +93,0 @@ if (matched) {

dist/utils.js

@@ -25,3 +25,3 @@ "use strict";
 exports.combineRequests = combineRequests;
-exports.webpackIgnoreCommentRegexp = void 0;
+exports.WEBPACK_IGNORE_COMMENT_REGEXP = void 0;
 
@@ -50,8 +50,5 @@ var _url = require("url");
 */
-const whitespace = "[\\x20\\t\\r\\n\\f]";
-const unescapeRegExp = new RegExp(`\\\\([\\da-f]{1,6}${whitespace}?|(${whitespace})|.)`, "ig");
-const matchNativeWin32Path = /^[A-Z]:[/\\]|^\\\\/i;
-const webpackIgnoreCommentRegexp = /webpackIgnore:(\s+)?(true|false)/; // eslint-disable-next-line no-useless-escape
+const WEBPACK_IGNORE_COMMENT_REGEXP = /webpackIgnore:(\s+)?(true|false)/; // eslint-disable-next-line no-useless-escape
 
-exports.webpackIgnoreCommentRegexp = webpackIgnoreCommentRegexp;
+exports.WEBPACK_IGNORE_COMMENT_REGEXP = WEBPACK_IGNORE_COMMENT_REGEXP;
 const regexSingleEscape = /[ -,.\/:-@[\]\^`{-~]/;
@@ -104,16 +101,83 @@ const regexExcessiveSpaces = /(^|\\+)?(\\[A-F0-9]{1,6})\x20(?![a-fA-F0-9\x20])/g;
 
+function gobbleHex(str) {
+  const lower = str.toLowerCase();
+  let hex = "";
+  let spaceTerminated = false; // eslint-disable-next-line no-undefined
+
+  for (let i = 0; i < 6 && lower[i] !== undefined; i++) {
+    const code = lower.charCodeAt(i); // check to see if we are dealing with a valid hex char [a-f|0-9]
+
+    const valid = code >= 97 && code <= 102 || code >= 48 && code <= 57; // https://drafts.csswg.org/css-syntax/#consume-escaped-code-point
+
+    spaceTerminated = code === 32;
+
+    if (!valid) {
+      break;
+    }
+
+    hex += lower[i];
+  }
+
+  if (hex.length === 0) {
+    // eslint-disable-next-line no-undefined
+    return undefined;
+  }
+
+  const codePoint = parseInt(hex, 16);
+  const isSurrogate = codePoint >= 0xd800 && codePoint <= 0xdfff; // Add special case for
+  // "If this number is zero, or is for a surrogate, or is greater than the maximum allowed code point"
+  // https://drafts.csswg.org/css-syntax/#maximum-allowed-code-point
+
+  if (isSurrogate || codePoint === 0x0000 || codePoint > 0x10ffff) {
+    return ["\uFFFD", hex.length + (spaceTerminated ? 1 : 0)];
+  }
+
+  return [String.fromCodePoint(codePoint), hex.length + (spaceTerminated ? 1 : 0)];
+}
+
+const CONTAINS_ESCAPE = /\\/;
+
 function unescape(str) {
-  return str.replace(unescapeRegExp, (_, escaped, escapedWhitespace) => {
-    const high = `0x${escaped}` - 0x10000;
-    /* eslint-disable line-comment-position */
-    // NaN means non-codepoint
-    // Workaround erroneous numeric interpretation of +"0x"
-    // eslint-disable-next-line no-self-compare
+  const needToProcess = CONTAINS_ESCAPE.test(str);
 
-    return high !== high || escapedWhitespace ? escaped : high < 0 ? // BMP codepoint
-    String.fromCharCode(high + 0x10000) : // Supplemental Plane codepoint (surrogate pair)
-    // eslint-disable-next-line no-bitwise
-    String.fromCharCode(high >> 10 | 0xd800, high & 0x3ff | 0xdc00);
-    /* eslint-enable line-comment-position */
-  });
+  if (!needToProcess) {
+    return str;
+  }
+
+  let ret = "";
+
+  for (let i = 0; i < str.length; i++) {
+    if (str[i] === "\\") {
+      const gobbled = gobbleHex(str.slice(i + 1, i + 7)); // eslint-disable-next-line no-undefined
+
+      if (gobbled !== undefined) {
+        ret += gobbled[0];
+        i += gobbled[1]; // eslint-disable-next-line no-continue
+
+        continue;
+      } // Retain a pair of \\ if double escaped `\\\\`
+      // https://github.com/postcss/postcss-selector-parser/commit/268c9a7656fb53f543dc620aa5b73a30ec3ff20e
+
+
+      if (str[i + 1] === "\\") {
+        ret += "\\";
+        i += 1; // eslint-disable-next-line no-continue
+
+        continue;
+      } // if \\ is at the end of the string retain it
+      // https://github.com/postcss/postcss-selector-parser/commit/01a6b346e3612ce1ab20219acc26abdc259ccefb
+
+
+      if (str.length === i + 1) {
+        ret += str[i];
+      } // eslint-disable-next-line no-continue
+
+
+      continue;
+    }
+
+    ret += str[i];
+  }
+
+  return ret;
 }
@@ -150,2 +214,4 @@
 
+const NATIVE_WIN32_PATH = /^[A-Z]:[/\\]|^\\\\/i;
+
 function normalizeUrl(url, isStringValue) {
@@ -158,3 +224,3 @@ let normalizedUrl = url.replace(/^( |\t\n|\r\n|\r|\f)*/g, "").replace(/( |\t\n|\r\n|\r|\f)*$/g, "");
 
-  if (matchNativeWin32Path.test(url)) {
+  if (NATIVE_WIN32_PATH.test(url)) {
     try {
@@ -693,3 +759,3 @@ normalizedUrl = decodeURI(normalizedUrl);
 
-  if (/^[a-z][a-z0-9+.-]*:/i.test(url) && !matchNativeWin32Path.test(url)) {
+  if (/^[a-z][a-z0-9+.-]*:/i.test(url) && !NATIVE_WIN32_PATH.test(url)) {
     return false;
@@ -696,0 +762,0 @@ } // `#` URLs

package.json

 {
   "name": "css-loader",
-  "version": "5.2.2",
+  "version": "5.2.3",
   "description": "css loader module for webpack",
@@ -5,0 +5,0 @@ "license": "MIT",

No alert changes

Improved metrics

Total package byte prevSize

134556

increased by1.23%

Lines of code

1658

increased by2.54%

No dependency changes