.eslintrc.js

module.exports = {
  root: true,
  env: {
    node: true,
  },
  parserOptions: {
    parser: 'babel-eslint',
  },
  extends: [
    'plugin:vue/essential',
    'eslint:recommended',
  ],
  rules: {
    // 'no-console': process.env.NODE_ENV === 'production' ? 'error' : 'off',
    'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off',

    'no-await-in-loop': 'warn',
    'no-compare-neg-zero': 'error',
    'no-extra-parens': ['warn', 'all', {
      nestedBinaryExpressions: false,
    }],
    'no-template-curly-in-string': 'error',
    'no-unsafe-negation': 'error',
    'valid-jsdoc': ['error', {
      requireReturn: false,
      requireReturnDescription: false,
      prefer: {
        return: 'returns',
        arg: 'param',
      },
      preferType: {
        String: 'string',
        Number: 'number',
        Boolean: 'boolean',
        Symbol: 'symbol',
        object: 'Object',
        function: 'Function',
        array: 'Array',
        date: 'Date',
        error: 'Error',
        null: 'void',
      },
    }],

    'accessor-pairs': 'warn',
    'array-callback-return': 'error',
    complexity: 'warn',
    'consistent-return': 'error',
    curly: ['error', 'multi'],
    'dot-location': ['error', 'property'],
    'dot-notation': 'error',
    eqeqeq: 'error',
    'no-console': 'off',
    'no-empty-function': 'error',
    'no-floating-decimal': 'error',
    'no-implied-eval': 'error',
    'no-invalid-this': 'error',
    'no-lone-blocks': 'error',
    'no-multi-spaces': 'error',
    'no-new-func': 'error',
    'no-new-wrappers': 'error',
    'no-new': 'error',
    'no-octal-escape': 'error',
    'no-return-assign': 'error',
    'no-return-await': 'error',
    'no-self-compare': 'error',
    'no-sequences': 'error',
    'no-throw-literal': 'error',
    'no-unmodified-loop-condition': 'error',
    'no-unused-expressions': 'error',
    'no-useless-call': 'error',
    'no-useless-concat': 'error',
    'no-useless-escape': 'error',
    'no-useless-return': 'error',
    'no-void': 'error',
    'no-warning-comments': 'warn',
    'prefer-promise-reject-errors': 'error',
    'require-await': 'warn',
    'wrap-iife': 'error',
    yoda: 'error',

    'no-label-var': 'error',
    'no-shadow': 'error',
    'no-undef-init': 'error',

    'callback-return': 'error',
    'handle-callback-err': 'error',
    'no-mixed-requires': 'error',
    'no-new-require': 'error',
    'no-path-concat': 'error',

    'array-bracket-spacing': 'error',
    'block-spacing': 'error',
    'brace-style': ['error', '1tbs', { allowSingleLine: true }],
    'capitalized-comments': ['error', 'always', { ignoreConsecutiveComments: true }],
    'comma-dangle': ['error', 'always-multiline'],
    'comma-spacing': 'error',
    'comma-style': 'error',
    'computed-property-spacing': 'error',
    'consistent-this': ['error', '$this'],
    'eol-last': 'error',
    'func-names': 'error',
    'func-name-matching': 'error',
    'func-style': ['error', 'declaration', { allowArrowFunctions: true }],
    indent: ['error', 2, { SwitchCase: 1 }],
    'key-spacing': 'error',
    'keyword-spacing': 'error',
    'max-depth': 'error',
    // 'max-len': ['error', 120, 2],
    'max-nested-callbacks': ['error', { max: 4 }],
    'max-statements-per-line': ['error', { max: 2 }],
    'new-cap': 'error',
    'newline-per-chained-call': ['error', { ignoreChainWithDepth: 3 }],
    'no-array-constructor': 'error',
    'no-inline-comments': 'error',
    'no-lonely-if': 'error',
    'no-mixed-operators': 'error',
    'no-multiple-empty-lines': ['error', { max: 2, maxEOF: 1, maxBOF: 0 }],
    'no-new-object': 'error',
    'no-spaced-func': 'error',
    'no-trailing-spaces': 'error',
    'no-unneeded-ternary': 'error',
    'no-whitespace-before-property': 'error',
    'object-curly-spacing': ['error', 'always'],
    'operator-assignment': 'error',
    'operator-linebreak': ['error', 'after'],
    'padded-blocks': ['error', 'never'],
    'quote-props': ['error', 'as-needed'],
    quotes: ['error', 'single', { avoidEscape: true, allowTemplateLiterals: true }],
    'semi-spacing': 'error',
    semi: 'error',
    'space-before-blocks': 'error',
    'space-before-function-paren': ['error', 'never'],
    'space-in-parens': 'error',
    'space-infix-ops': 'error',
    'space-unary-ops': 'error',
    'spaced-comment': 'error',
    'template-tag-spacing': 'error',
    'unicode-bom': 'error',

    'arrow-body-style': 'error',
    'arrow-parens': ['error', 'as-needed'],
    'arrow-spacing': 'error',
    'no-duplicate-imports': 'error',
    'no-useless-computed-key': 'error',
    'no-useless-constructor': 'error',
    'prefer-arrow-callback': 'error',
    'prefer-numeric-literals': 'error',
    'prefer-rest-params': 'error',
    'prefer-spread': 'error',
    'prefer-template': 'error',
    'rest-spread-spacing': 'error',
    'template-curly-spacing': 'error',
    'yield-star-spacing': 'error',
  },
};