migrate to eslint 9 and lint in CI

.github/workflows/run.yml

@@ -2,6 +2,21 @@ name: 'CI'
 on: [pull_request, push]
 
 jobs:
+  lint:
+    runs-on: ubuntu-latest
+    name: Lint
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+    - name: Install dependencies
+      run: npm ci
+    - name: Lint
+      run: npm run lint
+
+
   swig:
     runs-on: ubuntu-latest
     name: Generate the SWIG wrappers

eslint.config.mjs

@@ -0,0 +1,80 @@
+import mocha from 'eslint-plugin-mocha';
+import globals from 'globals';
+import typescriptEslint from '@typescript-eslint/eslint-plugin';
+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: ['test/browser/build/*', 'build/*', 'lib/binding/*'],
+}, ...compat.extends('eslint:recommended'), {
+    plugins: {
+        mocha,
+    },
+
+    languageOptions: {
+        globals: {
+            ...globals.mocha,
+            ...globals['shared-node-browser'],
+            __karma__: true,
+            process: true,
+        },
+
+        ecmaVersion: 2020,
+        sourceType: 'module',
+    },
+
+    rules: {
+        semi: [2, 'always'],
+        quotes: ['error', 'single'],
+    },
+}, ...compat.extends(
+    'eslint:recommended',
+    'plugin:@typescript-eslint/eslint-recommended',
+    'plugin:@typescript-eslint/recommended',
+).map(config => ({
+    ...config,
+    files: ['test/*.ts'],
+})), {
+    files: ['test/*.ts'],
+
+    plugins: {
+        '@typescript-eslint': typescriptEslint,
+    },
+
+    languageOptions: {
+        parser: tsParser,
+    },
+
+    rules: {
+        '@typescript-eslint/ban-ts-comment': 'off',
+    },
+}, {
+    files: ['**/*.cjs'],
+
+    languageOptions: {
+        ecmaVersion: 2015,
+        sourceType: 'commonjs',
+        globals: {
+            ...globals.node
+        }
+    },
+}, {
+    files: ['test/browser/*.js'],
+
+    languageOptions: {
+        globals: {
+            ...globals.browser,
+        },
+    },
+}];

package.json

@@ -32,7 +32,7 @@
     "build:wasm": "npm run configure:wasm && npx xpm run build --config wasm",
     "build:webpack": "cd test/browser && npx webpack --mode=production",
     "build": "npm run build:native && npm run build:wasm",
-    "lint": "clang-format -i src/*.cc src/*.h && eslint test",
+    "lint": "npx eslint",
     "dev": "cd test/browser && npx webpack serve --mode=production",
     "gcov": "mkdir -p coverage && cd coverage && gcov -o ../build/Debug/obj.target/proj_js/build -o ../build/Debug/obj.target/proj_js/src ../src/* ../build/*",
     "lcov": "npx c8 report --reporter=text-lcov > coverage/tests.lcov"
@@ -69,6 +69,8 @@
     "xpm": "^0.19.1"
   },
   "devDependencies": {
+    "@eslint/eslintrc": "^3.1.0",
+    "@eslint/js": "^9.12.0",
     "@types/chai": "^4.3.14",
     "@types/mocha": "^10.0.6",
     "@types/node": "^20.12.7",
@@ -80,6 +82,7 @@
     "eslint": "^9.12.0",
     "eslint-plugin-mocha": "^10.5.0",
     "glob": "^11.0.0",
+    "globals": "^15.11.0",
     "karma": "^6.4.3",
     "karma-chrome-launcher": "^3.2.0",
     "karma-mocha": "^2.0.1",