ci: setup linter

.editorconfig

@@ -11,5 +11,5 @@ trim_trailing_whitespace = true
 indent_style = space
 indent_size = 4
 
-[{.eslintrc,*.json,.travis.yml}]
+[{*.json,.travis.yml, **/*.js}]
 indent_size = 2

.github/workflows/test.yml

@@ -1,31 +1,35 @@
 name: Test
 
 on:
-    push:
-        branches:
-            - main
-    pull_request:
-        branches:
-            - main
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
 
 jobs:
-    build:
-        runs-on: ubuntu-latest
+  build:
+    runs-on: ubuntu-latest
 
-        steps:
-            - uses: actions/checkout@v4
+    steps:
+      - uses: actions/checkout@v4
 
-            - name: Setup Node
-              uses: actions/setup-node@v4
-              with:
-                  node-version-file: ".nvmrc"
-                  cache: "npm"
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: ".nvmrc"
+          cache: "npm"
 
-            - name: Install Dependencies
-              run: npm ci
+      - name: Install Dependencies
+        run: npm ci
 
-            - name: Build
-              run: npm run build
+      - name: Build
+        run: npm run build
+
+      - name: Lint
+        run: npm run lint
+
+      - name: Test
+        run: npm test
 
-            - name: Test
-              run: npm test

.husky/pre-commit

@@ -0,0 +1,2 @@
+npx pretty-quick --staged --pattern "**/*.{js,ts,mjs,cjs}"
+npm run lint

Gulpfile.js

@@ -1,43 +1,26 @@
-const babel = require('gulp-babel');
-const del = require('del');
-const eslint = require('gulp-eslint');
-const gulp = require('gulp');
-const mocha = require('gulp-mocha');
-
-function clean () {
-    return del(['lib']);
-}
-
-function lint () {
-    return gulp
-        .src([
-            'src/**/*.js',
-            'test/**/*.js',
-            'Gulpfile.js'
-        ])
-        .pipe(eslint())
-        .pipe(eslint.format())
-        .pipe(eslint.failAfterError());
-}
-
-function build () {
-    return gulp
-        .src('src/**/*.js')
-        .pipe(babel())
-        .pipe(gulp.dest('lib'));
-}
-
-function test () {
-    return gulp
-        .src('test/**.js')
-        .pipe(mocha({
-            ui:       'bdd',
-            reporter: 'spec',
-            timeout:  typeof v8debug === 'undefined' ? 2000 : Infinity // NOTE: disable timeouts in debug
-        }));
-}
-
-exports.clean = clean;
-exports.lint = lint;
-exports.build = gulp.series(clean, lint, build);
-exports.test = gulp.series(build, lint, test);
+const babel = require("gulp-babel");
+const del = require("del");
+const gulp = require("gulp");
+const mocha = require("gulp-mocha");
+
+function clean() {
+    return del(["lib"]);
+}
+
+function build() {
+    return gulp.src("src/**/*.js").pipe(babel()).pipe(gulp.dest("lib"));
+}
+
+function test() {
+    return gulp.src("test/**.js").pipe(
+        mocha({
+            ui: "bdd",
+            reporter: "spec",
+            timeout: typeof v8debug === "undefined" ? 2000 : Infinity, // NOTE: disable timeouts in debug
+        }),
+    );
+}
+
+exports.clean = clean;
+exports.build = gulp.series(clean, build);
+exports.test = gulp.series(build, test);

eslint.config.mjs

@@ -0,0 +1,39 @@
+import js from "@eslint/js";
+import prettier from "eslint-config-prettier";
+import mocha from "eslint-plugin-mocha";
+
+export default [
+    {
+        files: ["src/**/*.js"],
+        languageOptions: {
+            ecmaVersion: "latest",
+            sourceType: "module",
+        },
+        rules: {
+            ...prettier.rules,
+            ...js.configs.recommended.rules,
+        },
+    },
+    {
+        files: ["test/**/*.js"],
+        plugins: {
+            mocha,
+        },
+        rules: {
+            ...mocha.configs.recommended.rules,
+            "mocha/no-exclusive-tests": "error",
+            "mocha/no-skipped-tests": "warn",
+        },
+    },
+    {
+        languageOptions: {
+            globals: {
+                __dirname: true,
+                console: true,
+                exports: true,
+                module: true,
+                require: true,
+            },
+        },
+    },
+];