refactor: improve

webpack · Apr 14, 2023 · d1634b8 · d1634b8
1 parent f1cf224
commit d1634b8
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/lib/css/CssParser.js b/lib/css/CssParser.js
@@ -23,9 +23,13 @@ const CC_COLON = ":".charCodeAt(0);
 const CC_SLASH = "/".charCodeAt(0);
 const CC_SEMICOLON = ";".charCodeAt(0);
 
-const STRING_MULTILINE = /\\(\n|\r\n|\r|\f)/g;
-const TRIM_WHITE_SPACES = /(^( |\t\n|\r\n|\r|\f)*|( |\t\n|\r\n|\r|\f)*$)/g;
+// https://www.w3.org/TR/css-syntax-3/#newline
+// We don't have `preprocessing` stage, so we need specify all of them
+const STRING_MULTILINE = /\\[\n\r\f]/g;
+// https://www.w3.org/TR/css-syntax-3/#whitespace
+const TRIM_WHITE_SPACES = /(^[ \t\n\r\f]*|[ \t\n\r\f]*$)/g;
 const UNESCAPE = /\\([0-9a-fA-F]{1,6}[ \t\n\r\f]?|[\s\S])/g;
+const IMAGE_SET_FUNCTION = /^(-\w+-)?image-set$/i;
 
 const normalizeUrl = (str, isString) => {
 	// Remove extra spaces and newlines:
@@ -390,7 +394,7 @@ class CssParser extends Parser {
 						if (
 							lastFunction &&
 							(lastFunction[0].replace(/\\/g, "").toLowerCase() === "url" ||
-								/^(-\w+-)?image-set$/i.test(lastFunction[0].replace(/\\/g, "")))
+								IMAGE_SET_FUNCTION.test(lastFunction[0].replace(/\\/g, "")))
 						) {
 							let value = normalizeUrl(input.slice(start + 1, end - 1), true);