eslint.config.js

'use strict';

module.exports = {
  languageOptions: {
    ecmaVersion: 'latest',
    sourceType: 'commonjs',
    globals: {
      BigInt: true,
      AbortController: true,
      AbortSignal: true,
      DOMException: true,
      fetch: true,
      console: true,
      process: true,
      Buffer: true,
      Blob: true,
      TextDecoder: true,
      TextEncoder: true,
      TextDecoderStream: true,
      TextEncoderStream: true,
      WebSocket: true,
      window: true,
      setTimeout: true,
      setImmediate: true,
      setInterval: true,
      clearTimeout: true,
      clearImmediate: true,
      clearInterval: true,
      __dirname: true,
      __filename: true,
      Event: true,
      EventTarget: true,
      MessageChannel: true,
      MessageEvent: true,
      MessagePort: true,
      FormData: true,
      Headers: true,
      Response: true,
      Request: true,
      ByteLengthQueuingStrategy: true,
      URL: true,
      URLSearchParams: true,
      WebAssembly: true,
      queueMicrotask: true,
      BroadcastChannel: true,
      CompressionStream: true,
      DecompressionStream: true,
      CountQueuingStrategy: true,
      DomainError: true,
      document: true,
      location: true,
      self: true,
      caches: true,
      navigator: true,
      File: true,
      localStorage: true,
    },
  },
  ignores: ['node_modules/*'],
  rules: {
    indent: ['error', 2],
    'linebreak-style': ['error', 'unix'],
    quotes: [
      'error',
      'single',
      {
        allowTemplateLiterals: true,
      },
    ],
    semi: ['error', 'always'],
    'no-loop-func': ['error'],
    'block-spacing': ['error', 'always'],
    camelcase: ['error'],
    eqeqeq: ['error', 'always'],
    strict: ['error', 'global'],
    'brace-style': [
      'error',
      '1tbs',
      {
        allowSingleLine: true,
      },
    ],
    'comma-style': ['error', 'last'],
    'comma-spacing': [
      'error',
      {
        before: false,
        after: true,
      },
    ],
    'eol-last': ['error'],
    'func-call-spacing': ['error', 'never'],
    'key-spacing': [
      'error',
      {
        beforeColon: false,
        afterColon: true,
        mode: 'minimum',
      },
    ],
    'keyword-spacing': [
      'error',
      {
        before: true,
        after: true,
        overrides: {
          function: {
            after: false,
          },
        },
      },
    ],
    'max-len': [
      'error',
      {
        code: 80,
        ignoreUrls: true,
      },
    ],
    'max-nested-callbacks': [
      'error',
      {
        max: 7,
      },
    ],
    'new-cap': [
      'error',
      {
        newIsCap: true,
        capIsNew: true,
        properties: true,
      },
    ],
    'new-parens': ['error'],
    'no-lonely-if': ['error'],
    'no-trailing-spaces': ['error'],
    'no-unneeded-ternary': ['error'],
    'no-whitespace-before-property': ['error'],
    'object-curly-spacing': ['error', 'always'],
    'operator-assignment': ['error', 'always'],
    'operator-linebreak': [
      'error',
      'after',
      {
        overrides: {
          '?': 'before',
          ':': 'before',
        },
      },
    ],
    'semi-spacing': [
      'error',
      {
        before: false,
        after: true,
      },
    ],
    'space-before-blocks': ['error', 'always'],
    'space-before-function-paren': [
      'error',
      {
        anonymous: 'never',
        named: 'never',
        asyncArrow: 'always',
      },
    ],
    'space-in-parens': ['error', 'never'],
    'space-infix-ops': ['error'],
    'space-unary-ops': [
      'error',
      {
        words: true,
        nonwords: false,
        overrides: {
          typeof: false,
        },
      },
    ],
    'no-unreachable': ['error'],
    'no-global-assign': ['error'],
    'no-self-compare': ['error'],
    'no-unmodified-loop-condition': ['error'],
    'no-constant-condition': [
      'error',
      {
        checkLoops: false,
      },
    ],
    'no-console': ['off'],
    'no-useless-concat': ['error'],
    'no-useless-escape': ['error'],
    'no-shadow-restricted-names': ['error'],
    'no-use-before-define': [
      'error',
      {
        functions: false,
      },
    ],
    'arrow-parens': ['error', 'always'],
    'arrow-body-style': ['error', 'as-needed'],
    'arrow-spacing': ['error'],
    'no-confusing-arrow': 0,
    'no-useless-computed-key': ['error'],
    'no-useless-rename': ['error'],
    'no-var': ['error'],
    'object-shorthand': ['error', 'always'],
    'prefer-arrow-callback': ['error'],
    'prefer-const': ['error'],
    'prefer-numeric-literals': ['error'],
    'prefer-rest-params': ['error'],
    'prefer-spread': ['error'],
    'rest-spread-spacing': ['error', 'never'],
    'template-curly-spacing': ['error', 'never'],
    'consistent-return': [
      'error',
      {
        treatUndefinedAsUnspecified: true,
      },
    ],
    'constructor-super': ['error'],
    'for-direction': ['error'],
    'getter-return': ['error'],
    'no-async-promise-executor': ['error'],
    'no-case-declarations': ['error'],
    'no-class-assign': ['error'],
    'no-compare-neg-zero': ['error'],
    'no-cond-assign': ['error'],
    'no-const-assign': ['error'],
    'no-constant-binary-expression': ['error'],
    'no-control-regex': ['error'],
    'no-debugger': ['error'],
    'no-delete-var': ['error'],
    'no-dupe-args': ['error'],
    'no-dupe-class-members': ['error'],
    'no-dupe-else-if': ['error'],
    'no-dupe-keys': ['error'],
    'no-duplicate-case': ['error'],
    'no-empty': ['error'],
    'no-empty-character-class': ['error'],
    'no-empty-pattern': ['error'],
    'no-empty-static-block': ['error'],
    'no-ex-assign': ['error'],
    'no-extra-boolean-cast': ['error'],
    'no-fallthrough': ['error'],
    'no-func-assign': ['error'],
    'no-import-assign': ['error'],
    'no-invalid-regexp': ['error'],
    'no-irregular-whitespace': ['error'],
    'no-loss-of-precision': ['error'],
    'no-misleading-character-class': ['error'],
    'no-new-native-nonconstructor': ['error'],
    'no-nonoctal-decimal-escape': ['error'],
    'no-obj-calls': ['error'],
    'no-octal': ['error'],
    'no-prototype-builtins': ['error'],
    'no-redeclare': ['error'],
    'no-regex-spaces': ['error'],
    'no-self-assign': ['error'],
    'no-setter-return': ['error'],
    'no-sparse-arrays': ['error'],
    'no-this-before-super': ['error'],
    'no-undef': ['error'],
    'no-unexpected-multiline': 0,
    'no-unsafe-finally': ['error'],
    'no-unsafe-negation': ['error'],
    'no-unsafe-optional-chaining': ['error'],
    'no-unused-labels': ['error'],
    'no-unused-private-class-members': ['error'],
    'no-unused-vars': ['error'],
    'no-useless-backreference': ['error'],
    'no-useless-catch': ['error'],
    'no-with': ['error'],
    'require-yield': ['error'],
    'use-isnan': ['error'],
    'valid-typeof': ['error'],
    curly: ['error', 'multi-line', 'consistent'],
    'space-unary-word-ops': 'off',
    'generator-star': 'off',
    'no-comma-dangle': 'off',
    'no-reserved-keys': 'off',
    'no-space-before-semi': 'off',
    'no-wrap-func': 'off',
    'space-after-function-name': 'off',
    'space-before-function-parentheses': 'off',
    'space-in-brackets': 'off',
    'no-arrow-condition': 'off',
    'space-after-keywords': 'off',
    'space-before-keywords': 'off',
    'space-return-throw-case': 'off',
    'no-spaced-func': 'off',
    'indent-legacy': 'off',
    'array-bracket-newline': 'off',
    'array-bracket-spacing': 'off',
    'array-element-newline': 'off',
    'comma-dangle': ['error', 'always-multiline'],
    'computed-property-spacing': 'off',
    'dot-location': 'off',
    'function-call-argument-newline': 'off',
    'function-paren-newline': 'off',
    'generator-star-spacing': 'off',
    'implicit-arrow-linebreak': 'off',
    'jsx-quotes': 'off',
    'lines-around-comment': 0,
    'max-statements-per-line': 'off',
    'multiline-ternary': 'off',
    'newline-per-chained-call': 'off',
    'no-extra-parens': [
      'error',
      'all',
      {
        returnAssign: false,
        nestedBinaryExpressions: false,
        enforceForArrowConditionals: false,
      },
    ],
    'no-extra-semi': 'off',
    'no-floating-decimal': 'off',
    'no-mixed-operators': 0,
    'no-mixed-spaces-and-tabs': 'off',
    'no-multi-spaces': 'off',
    'no-multiple-empty-lines': 'off',
    'no-tabs': 0,
    'nonblock-statement-body-position': 'off',
    'object-curly-newline': 'off',
    'object-property-newline': 'off',
    'one-var-declaration-per-line': 'off',
    'padded-blocks': 'off',
    'quote-props': 'off',
    'semi-style': 'off',
    'switch-colon-spacing': 'off',
    'template-tag-spacing': 'off',
    'wrap-iife': 'off',
    'wrap-regex': 'off',
    'yield-star-spacing': 'off',
    'no-return-assign': ['error'],
    'handle-callback-err': ['error', '^err'],
    'no-nested-ternary': ['error'],
    'no-invalid-this': ['error'],
    'class-methods-use-this': ['warn'],
  },
};