Migrate to eslint 9

eslint.config.js

@@ -0,0 +1,70 @@
+import simpleImportSort from 'eslint-plugin-simple-import-sort';
+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: [
+      '**/node_modules/',
+      '**/lib/',
+      '**/tmp/',
+      'test/*.js',
+      '**/templates/',
+      '**/@types/',
+      '**/*.js',
+      '*/*.js',
+    ],
+  },
+  ...compat.extends('plugin:@typescript-eslint/recommended', 'plugin:prettier/recommended'),
+  {
+    plugins: {
+      'simple-import-sort': simpleImportSort,
+    },
+
+    languageOptions: {
+      parser: tsParser,
+    },
+
+    rules: {
+      'simple-import-sort/imports': 'error',
+      'simple-import-sort/exports': 'error',
+
+      quotes: [
+        2,
+        'single',
+        {
+          avoidEscape: true,
+        },
+      ],
+
+      'no-debugger': 'off',
+      '@typescript-eslint/no-explicit-any': 'off',
+      '@typescript-eslint/no-misused-new': 'off',
+      '@typescript-eslint/no-unused-expressions': 'off',
+      '@typescript-eslint/triple-slash-reference': 'off',
+
+      '@typescript-eslint/no-unused-vars': [
+        'error',
+        {
+          argsIgnorePattern: '^_',
+          varsIgnorePattern: '^_',
+          caughtErrorsIgnorePattern: '^_',
+        },
+      ],
+
+      camelcase: 'off',
+      '@typescript-eslint/camelcase': 'off',
+    },
+  },
+];

package.json

@@ -16,7 +16,7 @@
     "build:package": "yarn run build && rm -rf './dist/[email protected]' && cd ./dist && zip -qr '[email protected]' .",
     "watch": "yarn run build && yarn run rollup -c --watch",
     "test": "jasmine --module --no-config build/tests/",
-    "lint": "eslint --ext .ts src/",
+    "lint": "eslint src/",
     "shell:restart": "busctl --user call org.gnome.Shell /io/elhan/Pano io.elhan.Pano restart",
     "build-and-restart": "yarn run build && yarn run shell:restart",
     "prettier:check": "prettier --check .",
@@ -36,6 +36,8 @@
   "devDependencies": {
     "@commitlint/cli": "^19.4.1",
     "@commitlint/config-conventional": "^19.4.1",
+    "@eslint/eslintrc": "^3.1.0",
+    "@eslint/js": "^9.9.1",
     "@girs/adw-1": "1.6.0-4.0.0-beta.15",
     "@girs/clutter-14": "14.0.0-4.0.0-beta.15",
     "@girs/gda-5.0": "5.0.0-4.0.0-beta.15",
@@ -58,6 +60,9 @@
     "@rollup/plugin-node-resolve": "^15.2.3",
     "@rollup/plugin-typescript": "^11.1.6",
     "@tsconfig/strictest": "^2.0.5",
+    "@types/eslint": "^9.6.1",
+    "@types/eslint__js": "^8.42.3",
+    "@types/eslint__eslintrc": "^2.1.2",
     "@types/events": "^3.0.3",
     "@types/gettext-parser": "^4.0.4",
     "@types/highlight.js": "^10.1.0",
@@ -68,7 +73,7 @@
     "@typescript-eslint/parser": "^8.4.0",
     "chalk": "^4.1.2",
     "cross-env": "^7.0.3",
-    "eslint": "^8.57.0",
+    "eslint": "^9.9.1",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-prettier": "^5.2.1",
     "eslint-plugin-simple-import-sort": "^12.1.1",