Updated eslint to v9

.npmignore

@@ -9,8 +9,6 @@
 /.DS_Store
 /.env*
 /.eslintcache
-/.eslintignore
-/.eslintrc.cjs
 /.git/
 /.github/
 /.gitignore
@@ -19,5 +17,6 @@
 /.prettierrc.cjs
 /build.sh
 /CONTRIBUTING.md
-/update-test-fixtures.sh
+/eslint.config.js
 /tests/
+/update-test-fixtures.sh

eslint.config.js

@@ -0,0 +1,137 @@
+import babelEslintParser from '@babel/eslint-parser';
+import eslint from '@eslint/js';
+import eslintPluginImport from 'eslint-plugin-import';
+import eslintPluginN from 'eslint-plugin-n';
+import eslintPluginPrettier from 'eslint-plugin-prettier/recommended';
+import eslintPluginSimpleImportSort from 'eslint-plugin-simple-import-sort';
+import eslintPluginTypescriptSortKeys from 'eslint-plugin-typescript-sort-keys';
+import globals from 'globals';
+// eslint-disable-next-line import/no-unresolved
+import tseslint from 'typescript-eslint';
+
+const parserOptionsJs = {
+  babelOptions: {
+    plugins: [
+      [
+        '@babel/plugin-proposal-decorators',
+        {
+          decoratorsBeforeExport: true,
+        },
+      ],
+    ],
+  },
+  ecmaFeatures: {
+    modules: true,
+  },
+  ecmaVersion: 'latest',
+  requireConfigFile: false,
+};
+
+const parserOptionsTs = {
+  projectService: true,
+  tsconfigRootDir: import.meta.dirname,
+};
+
+export default tseslint.config(
+  {
+    ignores: [
+      'dist/',
+      'dist-for-testing/',
+      'node_modules/',
+      'src/blueprints/',
+      'tests/fixtures/',
+      'tmp/',
+      '!.*',
+      '.*/',
+    ],
+  },
+
+  {
+    linterOptions: {
+      reportUnusedDisableDirectives: 'error',
+    },
+  },
+  {
+    plugins: {
+      'simple-import-sort': eslintPluginSimpleImportSort,
+    },
+    rules: {
+      curly: 'error',
+      'simple-import-sort/imports': 'error',
+      'simple-import-sort/exports': 'error',
+    },
+  },
+  eslint.configs.recommended,
+  eslintPluginImport.flatConfigs.recommended,
+  eslintPluginPrettier,
+
+  // JavaScript files
+  {
+    files: ['**/*.js'],
+    languageOptions: {
+      parser: babelEslintParser,
+      parserOptions: parserOptionsJs,
+    },
+    rules: {
+      'import/no-duplicates': 'error',
+    },
+  },
+
+  // TypeScript files
+  {
+    extends: [
+      ...tseslint.configs.recommended,
+      eslintPluginImport.flatConfigs.typescript,
+    ],
+    files: ['**/*.ts'],
+    languageOptions: {
+      parserOptions: parserOptionsTs,
+    },
+    plugins: {
+      'typescript-sort-keys': eslintPluginTypescriptSortKeys,
+    },
+    rules: {
+      '@typescript-eslint/array-type': 'error',
+      '@typescript-eslint/consistent-type-imports': 'error',
+      '@typescript-eslint/no-import-type-side-effects': 'error',
+      'import/no-duplicates': 'error',
+      'typescript-sort-keys/interface': 'error',
+      'typescript-sort-keys/string-enum': 'error',
+    },
+    settings: {
+      'import/resolver': {
+        node: true,
+        typescript: true,
+      },
+    },
+  },
+
+  // Node files
+  {
+    files: ['**/*.cjs'],
+    languageOptions: {
+      ecmaVersion: 'latest',
+      globals: {
+        ...globals.node,
+      },
+      sourceType: 'script',
+    },
+    plugins: {
+      n: eslintPluginN,
+    },
+  },
+  {
+    files: ['**/*.mjs'],
+    languageOptions: {
+      ecmaVersion: 'latest',
+      globals: {
+        ...globals.node,
+      },
+      parserOptions: parserOptionsJs,
+      sourceType: 'module',
+    },
+    plugins: {
+      n: eslintPluginN,
+    },
+  },
+);

package.json

@@ -39,37 +39,41 @@
     "test": "./build.sh --test && mt dist-for-testing --quiet"
   },
   "dependencies": {
-    "@codemod-utils/ast-javascript": "^1.2.9",
-    "@codemod-utils/ast-template": "^1.1.5",
-    "@codemod-utils/blueprints": "^1.1.6",
-    "@codemod-utils/ember": "^2.0.1",
-    "@codemod-utils/files": "^2.0.5",
+    "@codemod-utils/ast-javascript": "^1.2.11",
+    "@codemod-utils/ast-template": "^1.1.7",
+    "@codemod-utils/blueprints": "^1.1.8",
+    "@codemod-utils/ember": "^2.0.3",
+    "@codemod-utils/files": "^2.0.7",
     "yargs": "^17.7.2"
   },
   "devDependencies": {
-    "@babel/core": "^7.26.0",
-    "@codemod-utils/tests": "^1.1.8",
+    "@babel/core": "^7.26.7",
+    "@babel/eslint-parser": "^7.26.5",
+    "@babel/plugin-proposal-decorators": "^7.25.9",
+    "@codemod-utils/tests": "^1.1.10",
+    "@eslint/js": "^9.19.0",
     "@sondr3/minitest": "^0.1.2",
     "@tsconfig/node18": "^18.2.4",
     "@tsconfig/strictest": "^2.0.5",
-    "@types/node": "^18.19.68",
+    "@types/eslint__js": "^8.42.3",
+    "@types/node": "^18.19.75",
     "@types/yargs": "^17.0.33",
-    "@typescript-eslint/eslint-plugin": "^8.18.2",
-    "@typescript-eslint/parser": "^8.18.2",
-    "concurrently": "^9.1.0",
-    "eslint": "^8.57.1",
-    "eslint-config-prettier": "^9.1.0",
+    "concurrently": "^9.1.2",
+    "eslint": "^9.19.0",
+    "eslint-config-prettier": "^10.0.1",
     "eslint-import-resolver-typescript": "^3.7.0",
     "eslint-plugin-import": "^2.31.0",
     "eslint-plugin-n": "^17.15.1",
-    "eslint-plugin-prettier": "^5.2.1",
+    "eslint-plugin-prettier": "^5.2.3",
     "eslint-plugin-simple-import-sort": "^12.1.1",
     "eslint-plugin-typescript-sort-keys": "^3.3.0",
+    "globals": "^15.14.0",
     "lerna-changelog": "^2.2.0",
     "prettier": "^3.4.2",
-    "typescript": "^5.7.2"
+    "typescript": "^5.7.3",
+    "typescript-eslint": "^8.23.0"
   },
-  "packageManager": "[email protected].1",
+  "packageManager": "[email protected].5",
   "engines": {
     "node": "18.* || >= 20"
   },