eslint: enable most stylistic rules

https://eslint.style/packages/js

.eslintrc.cjs

@@ -1,28 +1,78 @@
 module.exports = {
-  'env': {
-    'es2021': true,
-    'node': true,
+  env: {
+    es2021: true,
+    node: true,
   },
-  "extends": "eslint:recommended",
-  'overrides': [
+  extends: 'eslint:recommended',
+  overrides: [
     {
-      'env': {
-        'node': true,
+      env: {
+        node: true,
       },
-      'files': [
+      files: [
         '.eslintrc.{js,cjs}',
       ],
-      'parserOptions': {
-        'sourceType': 'script',
+      parserOptions: {
+        sourceType: 'script',
       },
     },
   ],
-  'parserOptions': {
-    'ecmaVersion': 'latest',
-    'sourceType': 'module',
+  parserOptions: {
+    ecmaVersion: 'latest',
+    sourceType: 'module',
   },
-  'rules': {
-    'semi': 'error',
-    'no-unused-vars': ["error", { "argsIgnorePattern": "^_" }],
+  plugins: [
+    '@stylistic/js',
+  ],
+  // https://eslint.org/docs/latest/rules/
+  // https://eslint.style/packages/js
+  rules: {
+    'no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
+    '@stylistic/js/array-bracket-newline': ['error', 'consistent'],
+    '@stylistic/js/array-bracket-spacing': 'error',
+    '@stylistic/js/array-element-newline': ['error', 'consistent'],
+    '@stylistic/js/arrow-parens': ['error', 'as-needed'],
+    '@stylistic/js/arrow-spacing': 'error',
+    '@stylistic/js/block-spacing': 'error',
+    '@stylistic/js/brace-style': 'error',
+    '@stylistic/js/comma-dangle': ['error', 'always-multiline'],
+    '@stylistic/js/comma-spacing': 'error',
+    '@stylistic/js/comma-style': 'error',
+    '@stylistic/js/eol-last': 'error',
+    '@stylistic/js/func-call-spacing': 'error',
+    '@stylistic/js/function-paren-newline': ['error', 'consistent'],
+    '@stylistic/js/implicit-arrow-linebreak': 'error',
+    '@stylistic/js/indent': ['error', 2],
+    '@stylistic/js/key-spacing': 'error',
+    '@stylistic/js/keyword-spacing': 'error',
+    '@stylistic/js/linebreak-style': 'error',
+    '@stylistic/js/no-extra-parens': 'error',
+    '@stylistic/js/no-extra-semi': 'error',
+    '@stylistic/js/no-mixed-spaces-and-tabs': 'error',
+    '@stylistic/js/no-multi-spaces': 'error',
+    '@stylistic/js/no-multiple-empty-lines': 'error',
+    '@stylistic/js/no-tabs': 'error',
+    '@stylistic/js/no-trailing-spaces': 'error',
+    '@stylistic/js/no-whitespace-before-property': 'error',
+    '@stylistic/js/nonblock-statement-body-position': 'error',
+    '@stylistic/js/object-curly-newline': 'error',
+    '@stylistic/js/object-curly-spacing': ['error', 'always'],
+    '@stylistic/js/object-property-newline': ['error', { allowAllPropertiesOnSameLine: true }],
+    '@stylistic/js/quote-props': ['error', 'as-needed'],
+    '@stylistic/js/quotes': ['error', 'single'],
+    '@stylistic/js/rest-spread-spacing': 'error',
+    '@stylistic/js/semi': 'error',
+    '@stylistic/js/semi-spacing': 'error',
+    '@stylistic/js/semi-style': 'error',
+    '@stylistic/js/space-before-blocks': 'error',
+    '@stylistic/js/space-before-function-paren': ['error', { anonymous: 'never', named: 'never', asyncArrow: 'always' }],
+    '@stylistic/js/space-in-parens': 'error',
+    '@stylistic/js/space-infix-ops': 'error',
+    '@stylistic/js/space-unary-ops': 'error',
+    '@stylistic/js/spaced-comment': 'error',
+    '@stylistic/js/switch-colon-spacing': 'error',
+    '@stylistic/js/template-curly-spacing': 'error',
+    '@stylistic/js/template-tag-spacing': 'error',
+    '@stylistic/js/wrap-regex': 'error',
   },
 };

package.json

@@ -25,6 +25,7 @@
   "author": "Ralf Vogler",
   "license": "AGPL-3.0-only",
   "devDependencies": {
+    "@stylistic/eslint-plugin-js": "^1.0.1",
     "eslint": "^8.53.0"
   }
 }