update dependencies, switch to eslint v9, update tests

.github/workflows/tests.yml

@@ -1,28 +1,28 @@
 name: Run Tests
 
 on:
-  push:
-    branches: [ "master" ]
-  pull_request:
-    branches: [ "master" ]
+    push:
+        branches: ['master']
+    pull_request:
+        branches: ['master']
 
 jobs:
-  build:
-    runs-on: ubuntu-latest
+    build:
+        runs-on: ubuntu-latest
 
-    strategy:
-      matrix:
-        node-version: [14.x, 16.x]
-
-    steps:
-    - uses: actions/checkout@v3
+        strategy:
+            matrix:
+                node-version: [20.x, 22.x]
 
-    - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v3
-      with:
-        node-version: ${{ matrix.node-version }}
+        steps:
+            - uses: actions/checkout@v3
 
-    - name: Test
-      run: |
-        npm install
-        npm test
+            - name: Use Node.js ${{ matrix.node-version }}
+              uses: actions/setup-node@v3
+              with:
+                  node-version: ${{ matrix.node-version }}
+
+            - name: Test
+              run: |
+                  npm install
+                  npm test

eslint.config.mjs

@@ -0,0 +1,76 @@
+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: ['**/lib/'],
+	},
+	...compat.extends(
+		'eslint:recommended',
+		'plugin:eslint-plugin/recommended',
+		'plugin:node/recommended',
+		'plugin:prettier/recommended'
+	),
+	{
+		languageOptions: {
+			globals: {
+				...globals.node,
+			},
+
+			ecmaVersion: 2021,
+			sourceType: 'module',
+		},
+
+		settings: {
+			node: {
+				tryExtensions: ['.js', '.json', '.node', '.ts', '.d.ts'],
+			},
+		},
+
+		rules: {
+			'prettier/prettier': 0,
+			'eslint-plugin/prefer-message-ids': 1,
+		},
+	},
+	{
+		files: ['test/**/*.js'],
+
+		languageOptions: {
+			globals: {
+				...globals.mocha,
+			},
+		},
+	},
+	...compat.extends('plugin:@typescript-eslint/recommended').map((config) => ({
+		...config,
+		files: ['**/*.ts'],
+	})),
+	{
+		files: ['**/*.ts'],
+
+		languageOptions: {
+			parser: tsParser,
+		},
+
+		rules: {
+			'node/no-unsupported-features/es-syntax': [
+				'error',
+				{
+					ignores: ['modules'],
+				},
+			],
+		},
+	},
+];

gulpfile.js

@@ -7,7 +7,7 @@ const DEST = 'lib';
 const tsProject = ts.createProject('tsconfig.json');
 
 gulp.task('clean', function (done) {
-	rimraf(DEST, done);
+	rimraf.rimraf(DEST).then(() => done());
 });
 
 gulp.task(