chore: move to eslint flat config

.eslintignore

@@ -1,2 +0,0 @@
-node_modules
-dist

.eslintrc.cjs

@@ -1,39 +0,0 @@
-module.exports = {
-  root: true,
-  env: {
-    commonjs: true,
-    es6: true,
-    node: true
-  },
-  parser: '@typescript-eslint/parser',
-  parserOptions: {
-    sourceType: 'module',
-    ecmaVersion: 2022
-  },
-  plugins: ['@typescript-eslint'],
-  extends: [
-    'eslint:recommended',
-    'plugin:@typescript-eslint/recommended',
-    'plugin:@typescript-eslint/eslint-recommended',
-    'plugin:prettier/recommended'
-  ],
-  rules: {
-    'prettier/prettier': 'warn',
-    'no-empty': ['warn', { allowEmptyCatch: true }],
-    '@typescript-eslint/ban-ts-comment': ['error', { 'ts-ignore': 'allow-with-description' }],
-    '@typescript-eslint/explicit-function-return-type': 'error',
-    '@typescript-eslint/explicit-module-boundary-types': 'off',
-    '@typescript-eslint/no-empty-function': ['error', { allow: ['arrowFunctions'] }],
-    '@typescript-eslint/no-explicit-any': 'error',
-    '@typescript-eslint/no-non-null-assertion': 'off',
-    '@typescript-eslint/no-var-requires': 'off'
-  },
-  overrides: [
-    {
-      files: ['*.js'],
-      rules: {
-        '@typescript-eslint/explicit-function-return-type': 'off'
-      }
-    }
-  ]
-}

.gitignore

@@ -1,5 +1,5 @@
 node_modules
 dist
 .DS_Store
-
+.eslintcache
 *.log*

eslint.config.js

@@ -0,0 +1,42 @@
+// ts-check
+
+import eslint from '@eslint/js'
+import eslintPluginPrettierRecommended from 'eslint-plugin-prettier/recommended'
+import globals from 'globals'
+import tseslint from 'typescript-eslint'
+
+export default tseslint.config(
+  { ignores: ['**/node_modules', '**/dist', '**/bin'] },
+  eslint.configs.recommended,
+  tseslint.configs.recommended,
+  eslintPluginPrettierRecommended,
+  {
+    languageOptions: {
+      parser: tseslint.parser,
+      parserOptions: {
+        sourceType: 'module',
+        ecmaVersion: 2022
+      },
+      globals: {
+        ...globals.es2021,
+        ...globals.node
+      }
+    },
+    rules: {
+      'prettier/prettier': 'warn',
+      '@typescript-eslint/ban-ts-comment': ['error', { 'ts-ignore': 'allow-with-description' }],
+      '@typescript-eslint/explicit-function-return-type': 'error',
+      '@typescript-eslint/explicit-module-boundary-types': 'off',
+      '@typescript-eslint/no-empty-function': ['error', { allow: ['arrowFunctions'] }],
+      '@typescript-eslint/no-explicit-any': 'error',
+      '@typescript-eslint/no-non-null-assertion': 'off',
+      '@typescript-eslint/no-var-requires': 'off'
+    }
+  },
+  {
+    files: ['*.js', '*.mjs'],
+    rules: {
+      '@typescript-eslint/explicit-function-return-type': 'off'
+    }
+  }
+)

package.json

@@ -47,7 +47,7 @@
   ],
   "scripts": {
     "format": "prettier --write .",
-    "lint": "eslint --ext .ts src/**",
+    "lint": "eslint --cache .",
     "typecheck": "tsc --noEmit",
     "build": "pnpm run lint && rollup -c rollup.config.ts --configPlugin typescript"
   },
@@ -74,16 +74,16 @@
     }
   },
   "devDependencies": {
+    "@eslint/js": "^9.18.0",
     "@rollup/plugin-json": "^6.1.0",
     "@rollup/plugin-node-resolve": "^15.2.3",
     "@rollup/plugin-typescript": "^11.1.6",
     "@swc/core": "^1.6.5",
     "@types/node": "^18.19.39",
-    "@typescript-eslint/eslint-plugin": "^7.13.1",
-    "@typescript-eslint/parser": "^7.13.1",
-    "eslint": "^8.57.0",
-    "eslint-config-prettier": "^9.1.0",
-    "eslint-plugin-prettier": "^5.1.3",
+    "eslint": "^9.18.0",
+    "eslint-config-prettier": "^10.0.1",
+    "eslint-plugin-prettier": "^5.2.3",
+    "globals": "^15.14.0",
     "lint-staged": "^15.2.7",
     "prettier": "^3.3.2",
     "rollup": "^4.18.0",
@@ -92,6 +92,7 @@
     "simple-git-hooks": "^2.11.1",
     "tslib": "^2.6.3",
     "typescript": "^5.3.3",
+    "typescript-eslint": "^8.21.0",
     "vite": "^5.3.1"
   },
   "dependencies": {

src/config.ts

@@ -417,6 +417,7 @@ async function loadConfigFormBundledFile(
     } finally {
       try {
         fs.unlinkSync(fileNameTmp)
+        // eslint-disable-next-line no-empty
       } catch {}
     }
   } else {