chore: upgrade eslint from v8 to v9

.cspell.json

@@ -43,6 +43,7 @@
     "package-lock.json",
     "node_modules",
     "coverage",
-    "*.log"
+    "*.log",
+    "test/fixtures/**"
   ]
 }

README.md

@@ -146,7 +146,7 @@ module.exports = {
         },
         // If absolute path is a `glob` we replace backslashes with forward slashes, because only forward slashes can be used in the `glob`
         path.posix.join(
-          path.resolve(__dirname, "src").replace(/\\/g, "/"),
+          path.resolve(__dirname, "src").replaceAll("\\", "/"),
           "*.txt",
         ),
       ],
@@ -184,7 +184,7 @@ module.exports = {
         {
           // If absolute path is a `glob` we replace backslashes with forward slashes, because only forward slashes can be used in the `glob`
           from: path.posix.join(
-            path.resolve(__dirname, "fixtures").replace(/\\/g, "/"),
+            path.resolve(__dirname, "fixtures").replaceAll("\\", "/"),
             "*.txt",
           ),
         },
@@ -397,7 +397,7 @@ Default: `undefined`
 **webpack.config.js**
 
 ```js
-const fs = require("fs").promise;
+const fs = require("node:fs").promise;
 
 module.exports = {
   plugins: [
@@ -684,19 +684,13 @@ Type:
 type cache =
   | boolean
   | {
-      keys: {
-        [key: string]: any;
-      };
+      keys: Record<string, any>;
     }
   | {
       keys: (
-        defaultCacheKeys: {
-          [key: string]: any;
-        },
+        defaultCacheKeys: Record<string, any>,
         absoluteFilename: string,
-      ) => Promise<{
-        [key: string]: any;
-      }>;
+      ) => Promise<Record<string, any>>;
     }
   | undefined;
 ```
@@ -849,7 +843,7 @@ type transformAll = (
     sourceFilename: string;
     absoluteFilename: string;
   }[],
-) => any;
+) => string[];
 ```
 
 Default: `undefined`
@@ -1181,7 +1175,7 @@ module.exports = {
       patterns: [
         {
           from: path.posix.join(
-            path.resolve(__dirname, "src").replace(/\\/g, "/"),
+            path.resolve(__dirname, "src").replaceAll("\\", "/"),
             "**/*",
           ),
           globOptions: {

eslint.config.mjs

@@ -0,0 +1,20 @@
+import { defineConfig } from "eslint/config";
+import configs from "eslint-config-webpack/configs.js";
+import eslintPluginJest from "eslint-plugin-jest";
+
+export default defineConfig([
+  {
+    extends: [configs["recommended-dirty"]],
+    plugins: {
+      jest: eslintPluginJest,
+    },
+    rules: {
+      "jest/expect-expect": [
+        "error",
+        {
+          assertFunctionNames: ["expect", "runEmit", "runForce", "runChange"],
+        },
+      ],
+    },
+  },
+]);

globalSetup.js

@@ -1,5 +1,5 @@
-const path = require("path");
-const fs = require("fs");
+const fs = require("node:fs");
+const path = require("node:path");
 
 const removeIllegalCharacterForWindows = require("./test/helpers/removeIllegalCharacterForWindows");
 
@@ -12,11 +12,11 @@ const specialFiles = {
 };
 
 module.exports = () => {
-  Object.keys(specialFiles).forEach((originFile) => {
+  for (const originFile of Object.keys(specialFiles)) {
     const file = removeIllegalCharacterForWindows(originFile);
     const dir = path.dirname(file);
 
     fs.mkdirSync(path.join(baseDir, dir), { recursive: true });
     fs.writeFileSync(path.join(baseDir, file), specialFiles[originFile]);
-  });
+  }
 };