fix: update eslint for flat config (#507)

eslint.config.mjs

@@ -0,0 +1,66 @@
+import _import from 'eslint-plugin-import';
+import { fixupPluginRules } from '@eslint/compat';
+import globals from 'globals';
+import tsParser from '@typescript-eslint/parser';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+import js from '@eslint/js';
+import { FlatCompat } from '@eslint/eslintrc';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const compat = new FlatCompat({
+  baseDirectory: __dirname,
+  recommendedConfig: js.configs.recommended,
+  allConfig: js.configs.all,
+});
+
+export default [
+  {
+    ignores: [
+      '**/coverage',
+      '**/dist',
+      '**/cjs',
+      '**/esm',
+      'commitlint.config.cjs',
+    ],
+  },
+  ...compat.extends(
+    'prettier',
+    'eslint:recommended',
+    'plugin:@typescript-eslint/eslint-recommended',
+    'plugin:@typescript-eslint/recommended',
+  ),
+  {
+    plugins: {
+      import: fixupPluginRules(_import),
+    },
+
+    languageOptions: {
+      globals: {
+        ...globals.browser,
+      },
+
+      parser: tsParser,
+    },
+
+    settings: {
+      'import/resolver': {
+        node: {
+          extensions: ['.js', '.jsx', '.ts', '.tsx'],
+        },
+      },
+    },
+
+    rules: {
+      '@typescript-eslint/no-unused-vars': [
+        'warn',
+        {
+          argsIgnorePattern: '^_',
+          varsIgnorePattern: '^_',
+          caughtErrorsIgnorePattern: '^_',
+        },
+      ],
+    },
+  },
+];

package.json

@@ -42,9 +42,7 @@
     "build:esm": "tsc -p tsconfig.esm.json && tsc-alias -p tsconfig.esm.json && echo '{\"type\": \"module\"}' > esm/package.json",
     "prettier:check": "prettier --check {src,test}/**/*.{js,ts,tsx,json}",
     "prettier:write": "prettier --write {src,test}/**/*.{js,ts,tsx,json}",
-    "hooks:uninstall": "husky uninstall",
-    "hooks:install": "husky install",
-    "test:watch": "exit 0",
+    "hooks:install": "husky",
     "test": "exit 0",
     "lint": "eslint .",
     "type-check": "yarn tsc --noEmit",
@@ -58,12 +56,16 @@
   "devDependencies": {
     "@commitlint/cli": "19.4.0",
     "@commitlint/config-conventional": "19.2.2",
+    "@eslint/compat": "1.1.1",
+    "@eslint/eslintrc": "3.1.0",
+    "@eslint/js": "9.9.0",
     "@types/node": "20.16.1",
-    "@typescript-eslint/eslint-plugin": "7.18.0",
-    "@typescript-eslint/parser": "7.18.0",
-    "eslint": "8.57.0",
+    "@typescript-eslint/eslint-plugin": "8.2.0",
+    "@typescript-eslint/parser": "8.2.0",
+    "eslint": "9.9.0",
     "eslint-config-prettier": "9.1.0",
     "eslint-plugin-import": "2.29.1",
+    "globals": "15.9.0",
     "husky": "9.1.5",
     "i18next": "23.14.0",
     "prettier": "3.3.3",