refactor: update eslint-config-eslint (#229)

* chore: update eslint-config-eslint

* fix lint errors

* simplify @import pattern

* keep multiline var() fallbacks

Author: Pixel998

package.json

@@ -94,7 +94,7 @@
     "compute-baseline": "^0.3.1",
     "dedent": "^1.5.3",
     "eslint": "^9.31.0",
-    "eslint-config-eslint": "^11.0.0",
+    "eslint-config-eslint": "^12.0.0",
     "eslint-plugin-eslint-plugin": "^6.3.2",
     "got": "^14.4.2",
     "lint-staged": "^15.2.7",

src/languages/css-source-code.js

@@ -33,7 +33,7 @@ import { visitorKeys } from "./css-visitor-keys.js";
 const commentParser = new ConfigCommentParser();
 
 const INLINE_CONFIG =
-	/^\s*(?:eslint(?:-enable|-disable(?:(?:-next)?-line)?)?)(?:\s|$)/u;
+	/^\s*eslint(?:-enable|-disable(?:(?:-next)?-line)?)?(?:\s|$)/u;
 
 /**
  * A class to represent a step in the traversal process.

src/rules/no-invalid-properties.js

@@ -28,6 +28,7 @@ import { isSyntaxMatchError, isSyntaxReferenceError } from "../util.js";
 /**
  * Regex to match var() functional notation with optional fallback.
  */
+// eslint-disable-next-line regexp/no-super-linear-backtracking --  TODO: fix \s*(.+) to match newline characters
 const varFunctionPattern = /var\(\s*(--[^,\s)]+)\s*(?:,\s*(.+))?\)/iu;
 
 /**

tools/dedupe-types.js

@@ -20,7 +20,7 @@ import fs from "node:fs";
 //-----------------------------------------------------------------------------
 
 const importRegExp =
-	/^\s*\*\s*@import\s*\{\s*(?<ids>[^,}]+(?:\s*,\s*[^,}]+)*)\s*\}\s*from\s*"(?<source>[^"]+)"/u;
+	/^\s*\*\s*@import\s*\{(?<ids>[^,}]+(?:,[^,}]+)*)\}\s*from\s*"(?<source>[^"]+)"/u;
 
 // read files from the command line
 const files = process.argv.slice(2);

tools/update-readme.js

@@ -44,7 +44,7 @@ const allSponsors = await fetchSponsorsMarkdown();
 const readme = readFileSync(README_FILE_PATH, "utf8");
 
 let newReadme = readme.replace(
-	/<!--sponsorsstart-->[\w\W]*?<!--sponsorsend-->/u,
+	/<!--sponsorsstart-->[\s\S]*?<!--sponsorsend-->/u,
 	`<!--sponsorsstart-->\n\n${allSponsors}\n<!--sponsorsend-->`,
 );