chore: add ESLint configuration file and update CI workflow to copy it during setup

Author: AxiosLeo

.github/workflows/ci.yml

@@ -28,6 +28,7 @@ jobs:
         run: |
           if [ "${{ matrix.node-version }}" = "16" ]; then
             npm install [email protected] @eslint/[email protected] @eslint/[email protected]
+            cp ./assets/.eslintrc ./.eslintrc
           fi
           npm install
       - run: npm run lint

assets/.eslintrc

@@ -0,0 +1,91 @@
+{
+  "rules": {
+    "indent": [
+      2,
+      2,
+      {
+        "SwitchCase": 1
+      }
+    ],
+    "quotes": [2, "single"],
+    "linebreak-style": [2, "unix"],
+    "semi": [2, "always"],
+    "curly": 2,
+    "eqeqeq": 2,
+    "no-eval": 2,
+    "guard-for-in": 2,
+    "no-caller": 2,
+    "no-else-return": 2,
+    "no-eq-null": 2,
+    "no-extend-native": 2,
+    "no-extra-bind": 2,
+    "no-floating-decimal": 2,
+    "no-implied-eval": 2,
+    "no-labels": 2,
+    "no-with": 2,
+    "no-loop-func": 2,
+    "no-native-reassign": 2,
+    "no-redeclare": [
+      2,
+      {
+        "builtinGlobals": true
+      }
+    ],
+    "no-delete-var": 2,
+    "no-shadow-restricted-names": 2,
+    "no-undef-init": 2,
+    "no-use-before-define": 2,
+    "no-unused-vars": [
+      2,
+      {
+        "args": "none"
+      }
+    ],
+    "no-undefined": 2,
+    "no-undef": 2,
+    "global-require": 0,
+    "no-console": 2,
+    "key-spacing": [
+      2,
+      {
+        "beforeColon": false,
+        "afterColon": true
+      }
+    ],
+    "eol-last": [2, "always"],
+    "no-inner-declarations": [1],
+    "no-case-declarations": [1],
+    "no-multiple-empty-lines": [
+      2,
+      {
+        "max": 1,
+        "maxBOF": 1
+      }
+    ],
+    "space-in-parens": [2, "never"],
+    "no-multi-spaces": [
+      2,
+      {
+        "ignoreEOLComments": true
+      }
+    ]
+  },
+  "env": {
+    "es6": true,
+    "node": true,
+    "browser": true
+  },
+  "globals": {
+    "describe": true,
+    "it": true,
+    "before": true,
+    "after": true,
+    "beforeEach": true
+  },
+  "parserOptions": {
+    "ecmaVersion": 2018,
+    "sourceType": "script",
+    "ecmaFeatures": {}
+  },
+  "extends": "eslint:recommended"
+}