add pr linting

.github/workflows/lint.yml

@@ -0,0 +1,27 @@
+name: ESLint
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  lint:
+    name: Run ESLint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out Git repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+
+      - name: Install ESLint and GHA Formatter
+        run: |
+          npm install --save-dev globals eslint-formatter-gha eslint-plugin-jsdoc @eslint/json @eslint/js
+
+      - name: Run ESLint with GHA Formatter
+        run: npx eslint . -f gha

eslint.config.js

@@ -0,0 +1,54 @@
+import globals from "globals";
+import js from "@eslint/js";
+import json from "@eslint/json";
+import jsdoc from "eslint-plugin-jsdoc";
+import { defineConfig } from "eslint/config";
+
+export default defineConfig([
+    {
+        files: ["**/*.js"],
+        plugins: {
+            js,
+            jsdoc,
+        },
+        languageOptions: {
+            globals: {
+                ...globals.browser,
+                ...globals.webextensions
+            },
+            parserOptions: {
+                ecmaFeatures: {
+                    impliedStrict: true,
+                }
+            }
+        },
+        rules: {
+            "no-console": "warn",
+            "semi": ["error", "always"],
+            "quotes": ["error", "double"],
+            "no-unused-vars": "error",
+            "prefer-const": "error",
+            "eqeqeq": ["warn", "smart"],
+            "jsdoc/check-syntax": "error",
+            "jsdoc/check-types": "error",
+            "jsdoc/valid-types": "error",
+        },
+        linterOptions: {
+            reportUnusedInlineConfigs: "error",
+        },
+        extends: ["js/recommended"],
+    },
+    {
+        files: ["**/*.json"],
+        plugins: {
+            json,
+        },
+        language: "json/json",
+        rules: {
+            "json/no-duplicate-keys": "error",
+            "json/no-empty-keys": "error",
+            "json/no-unsafe-values": "warn",
+            "json/no-unnormalized-keys": "error",
+        },
+    }
+]);