eslint.config.js

'use strict';

const globals = require('globals');
const pluginJs = require('@eslint/js');

module.exports = [
  pluginJs.configs.recommended,
  {
    files: ['**/*.js'],
    languageOptions: {
      sourceType: 'commonjs',
      globals: {
        ...globals.node,
      },
    },
    rules: {
      'no-empty': ['error', { allowEmptyCatch: true }],
      indent: ['error', 2],
      'linebreak-style': ['error', 'unix'],
      quotes: ['error', 'single'],
      semi: ['error', 'always'],
      'no-loop-func': ['error'],
      'block-spacing': ['error', 'always'],
      camelcase: ['off'],
      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: false,
          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'],
      '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': [
        'error',
        {
          allowParens: true,
        },
      ],
      '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 }],
    },
  },
];