Airbnb-bases eslint rules (as a separate file, not complete)

.eslint.yml

env:
  commonjs: false
  es6: false
  node: true
  jest: true
globals:
  $: readonly
  createSharedVariable: readonly
  Atomics: readonly
  SharedArrayBuffer: readonly
parserOptions:
  ecmaVersion: 3
  sourceType: "script"
rules:
  accessor-pairs: error
  array-callback-return: error
  block-scoped-var: error
  complexity: [off, 20]
  consistent-return: error
  curly: [error, multi-line]
  default-case: [error, { commentPattern: '^no default$' }]
  default-param-last: error
  dot-notation: [error, { allowKeywords: true }]
  dot-location: [error, 'property']
  eqeqeq: [error, 'always', { null: 'ignore' }]
  grouped-accessor-pairs: error
  guard-for-in: error
  no-alert: warn
  no-caller: error
  no-case-declarations: error
  no-constructor-return: error
  no-div-regex: off
  no-empty-pattern: error
  no-eq-null: off
  no-eval: error
  no-extend-native: error
  no-extra-label: error
  no-fallthrough: error
  no-floating-decimal: error
  no-global-assign: error
  no-native-reassign: off
  no-implicit-coercion: [off, { boolean: false, number: true, string: true }]
  no-implicit-globals: off
  no-implied-eval: error
  no-invalid-this: off
  no-iterator: error
  no-labels:  [error, { allowLoop: false, allowSwitch: false }]
  no-lone-blocks: error
  no-loop-func: error
  no-magic-numbers': [off, { ignoreArrayIndexes: true, detectObjects: false }]
  no-multi-spaces: [error, { ignoreEOLComments: false }]
  no-new: error
  no-new-wrappers: error
  no-octal: error
  no-octal-escape: error
  no-param-reassign: [error, {
      props: true,
      ignorePropertyModificationsFor: [
        'acc', # for reduce accumulators
        'accumulator', # for reduce accumulators
        'e', # for e.returnvalue
        'ctx', # for Koa routing
        'context', # for Koa routing
        'req', # for Express requests
        'request', # for Express requests
        'res', # for Express responses
        'response', # for Express responses
        '$scope', # for Angular 1 scopes
        'staticContext' # for ReactRouter context
      ]
    }]
  no-proto: error
  no-redeclare: error
  no-restricted-properties: [error, {
      object: 'arguments',
      property: 'callee',
      message: 'arguments.callee is deprecated',
    }, {
      object: 'global',
      property: 'isFinite',
      message: 'Please use Number.isFinite instead',
    }, {
      object: 'self',
      property: 'isFinite',
      message: 'Please use Number.isFinite instead',
    }, {
      object: 'window',
      property: 'isFinite',
      message: 'Please use Number.isFinite instead',
    }, {
      object: 'global',
      property: 'isNaN',
      message: 'Please use Number.isNaN instead',
    }, {
      object: 'self',
      property: 'isNaN',
      message: 'Please use Number.isNaN instead',
    }, {
      object: 'window',
      property: 'isNaN',
      message: 'Please use Number.isNaN instead',
    }, {
      property: '__defineGetter__',
      message: 'Please use Object.defineProperty instead.',
    }, {
      property: '__defineSetter__',
      message: 'Please use Object.defineProperty instead.',
    }, {
      object: 'Math',
      property: 'pow',
      message: 'Use the exponentiation operator (**) instead.',
    }]
  no-return-assign: [error, 'always']
  no-script-url: error
  no-self-assign: error
  no-self-compare: error
  no-sequences: error
  no-throw-literal: error
  no-unmodified-loop-condition: off
  no-unused-labels: error
  no-useless-call: off
  no-useless-catch: error
  no-useless-concat: error
  no-useless-escape: error
  no-useless-return: error
  no-void: error
  no-warning-comments: [off, { terms: ['todo', 'fixme', 'xxx'], location: 'start' }]
  no-with: error
  prefer-named-capture-group: off
  radix: error
  require-unicode-regexp: off
  vars-on-top: off

  array-bracket-newline: [off, 'consistent']
  array-element-newline: [off, { multiline: true, minItems: 3 }]
  array-bracket-spacing: [error, 'never']
  block-spacing: [error, 'always']
  brace-style: [error, '1tbs', { allowSingleLine: true }]
  camelcase: [error, { properties: 'never', ignoreDestructuring: false }]
  capitalized-comments: [off, 'never', {
      line: {
        ignorePattern: '.*',
        ignoreInlineComments: true,
        ignoreConsecutiveComments: true,
      },
      block: {
        ignorePattern: '.*',
        ignoreInlineComments: true,
        ignoreConsecutiveComments: true,
      },
    }]
  comma-dangle: [error, "never"]
  comma-spacing: [error, { before: false, after: true }]
  comma-style: [error, 'last', {
      exceptions: {
        ArrayExpression: false,
        ArrayPattern: false,
        ArrowFunctionExpression: false,
        CallExpression: false,
        FunctionDeclaration: false,
        FunctionExpression: false,
        ImportDeclaration: false,
        ObjectExpression: false,
        ObjectPattern: false,
        VariableDeclaration: false,
        NewExpression: false,
      }
    }]
  computed-property-spacing: [error, 'never']
  consistent-this: off
  eol-last: [error, 'always']
  function-call-argument-newline: [error, 'consistent']
  func-call-spacing: [error, 'never']
  func-name-matching: [off, 'always', {
      includeCommonJSModuleExports: false,
      considerPropertyDescriptor: true,
    }]
  func-names: [error, "never"]
  func-style: [off, 'expression']
  function-paren-newline: [error, 'multiline-arguments']
  id-length: off
  id-match: off
  id-blacklist: [error, "State"]
  indent: [error, 2, { 
      SwitchCase: 1,
      VariableDeclarator: 1,
      outerIIFEBody: 1,
      FunctionDeclaration: {
        parameters: 1,
        body: 1
      },
      FunctionExpression: {
        parameters: 1,
        body: 1
      },
      CallExpression: {
        arguments: 1
      },
      ArrayExpression: 1,
      ObjectExpression: 1,
      ImportDeclaration: 1,
      flatTernaryExpressions: false,
        ## list derived from https://github.com/benjamn/ast-types/blob/HEAD/def/jsx.js
      ignoreComments: false
    }]
  key-spacing: [error, { beforeColon: false, afterColon: true }]
  keyword-spacing: [error, {
      before: true,
      after: true,
      overrides: {
        return: { after: true },
        throw: { after: true },
        case: { after: true }
      }
    }]
  line-comment-position: [off, {
      position: 'above',
      ignorePattern: '',
      applyDefaultPatterns: true,
    }]
  linebreak-style: [error, 'unix']
  lines-between-class-members: [error, 'always', { exceptAfterSingleLine: false }]
  lines-around-comment: off
  lines-around-directive: [error, {
      before: 'always',
      after: 'always'
    }]
  max-depth: [off, 4]
  max-len: [error, 120, 2, {
      ignoreUrls: true,
      ignoreComments: false,
      ignoreRegExpLiterals: true,
      ignoreStrings: true,
      ignoreTemplateLiterals: true
    }]
  max-lines: [off, {
      max: 300,
      skipBlankLines: true,
      skipComments: true
    }]
  max-lines-per-function: [off, {
      max: 50,
      skipBlankLines: true,
      skipComments: true,
      IIFEs: true
    }]
  max-nested-callbacks: off
  max-params: [off, 3]
  max-statements: [off, 10]
  max-statements-per-line: [off, { max: 1 }]
  multiline-comment-style: [off, 'starred-block']
  multiline-ternary: [off, 'never']
  new-cap: [error, {
      newIsCap: true,
      newIsCapExceptions: [],
      capIsNew: false,
      capIsNewExceptions: ['Immutable.Map', 'Immutable.Set', 'Immutable.List'],
    }]
  new-parens: error
  newline-after-var: off
  newline-before-return: off
  newline-per-chained-call: [error, { ignoreChainWithDepth: 4 }]
  no-array-constructor: error
  no-bitwise: error
  no-continue: error
  no-inline-comments: off
  no-lonely-if: error
  no-mixed-operators: [error, {
      groups: [
        ['%', '**'],
        ['%', '+'],
        ['%', '-'],
        ['%', '*'],
        ['%', '/'],
        ['/', '*'],
        ['&', '|', '<<', '>>', '>>>'],
        ['==', '!=', '===', '!=='],
        ['&&', '||'],
      ],
      allowSamePrecedence: false
    }]
  no-mixed-spaces-and-tabs: error
  no-multi-assign: [error]
  no-multiple-empty-lines: [error, { max: 1, maxBOF: 0, maxEOF: 0 }]
  no-negated-condition: off
  no-nested-ternary: error
  no-new-object: error
  no-plusplus: [error, {"allowForLoopAfterthoughts": true}]
  no-restricted-syntax: [
      error,
      {
        selector: 'ForInStatement',
        message: 'for..in loops iterate over the entire prototype chain, which is virtually never what you want. Use Object.{keys,values,entries}, and iterate over the resulting array.',
      },
      {
        selector: 'ForOfStatement',
        message: 'iterators/generators require regenerator-runtime, which is too heavyweight for this guide to allow them. Separately, loops should be avoided in favor of array iterations.',
      },
      {
        selector: 'LabeledStatement',
        message: 'Labels are a form of GOTO; using them makes code confusing and hard to maintain and understand.',
      },
      {
        selector: 'WithStatement',
        message: '`with` is disallowed in strict mode because it makes code impossible to predict and optimize.',
      },
    ]
  no-spaced-func: error
  no-tabs: error
  no-ternary: off
  no-trailing-spaces: [error, {
      skipBlankLines: false,
      ignoreComments: false
    }]
  no-underscore-dangle: [error, {
      allowAfterThis: false,
      allowAfterSuper: false,
      enforceInMethodNames: true
    }]
  no-unneeded-ternary: [error, { defaultAssignment: false }]
  no-whitespace-before-property: error
  nonblock-statement-body-position: [error, 'beside', { overrides: {} }]
  object-curly-spacing: [error, 'always']
  object-curly-newline: [error, {
      ObjectExpression: { minProperties: 4, multiline: true, consistent: true },
      ObjectPattern: { minProperties: 4, multiline: true, consistent: true },
      ImportDeclaration: { minProperties: 4, multiline: true, consistent: true },
      ExportDeclaration: { minProperties: 4, multiline: true, consistent: true },
    }]
  object-property-newline: [error, {
    allowAllPropertiesOnSameLine: true,
    }]
  one-var: [error, 'never']
  one-var-declaration-per-line: [error, always]
  operator-assignment: [error, always]
  operator-linebreak: [error, before, { overrides: { '=': 'none' } }]
  padded-blocks: [error, {
      blocks: never,
      classes: never,
      switches: never,
    }, {     
      allowSingleLineBlocks: true,
    }]
  padding-line-between-statements: off
  prefer-exponentiation-operator: error
  prefer-object-spread: [off, never]
  quote-props: [error, as-needed, { keywords: false, unnecessary: true, numbers: false }]
  quotes: [error, single, { avoidEscape: true }]
  require-jsdoc: off
  semi: [error, always]
  semi-spacing: [error, { before: false, after: true }]
  semi-style: [error, last]
  sort-keys: [off, asc, { caseSensitive: false, natural: true }]
  sort-vars: off
  space-before-blocks: error
  space-before-function-paren: [error, "never"]
  space-in-parens: [error, never]
  space-infix-ops: error
  space-unary-ops: [error, {
      words: true,
      nonwords: false,
      overrides: {
      },
    }]
  spaced-comment: [error, always, {
      line: {
        exceptions: ['-', '+'],
        markers: ['=', '!', '/']
      },
      block: {
        exceptions: ['-', '+'],
        markers: ['=', '!', ':', '::'],
        balanced: true,
      }
    }]
  switch-colon-spacing: [error, { after: true, before: false }]
  template-tag-spacing: [error, never]
  unicode-bom: [error, never]
  wrap-regex: off

  init-declarations: off
  no-catch-shadow: off
  no-delete-var: error
  no-label-var: error
  no-restricted-globals: [error,
      {
        name: 'isFinite',
        message:
          'Use Number.isFinite instead https://github.com/airbnb/javascript#standard-library--isfinite',
      },
      {
        name: 'isNaN',
        message:
          'Use Number.isNaN instead https://github.com/airbnb/javascript#standard-library--isnan',
      },
    ]
  no-shadow: error
  no-shadow-restricted-names: error
  no-undef: error
  no-undef-init: error
  no-undefined: off
  no-unused-vars: ['error', { vars: 'all', args: 'after-used', ignoreRestSiblings: true }]
  no-use-before-define: [error, { "functions": false }]

  no-var: 0
  prefer-template: 0
  prefer-arrow-callback: 0
  prefer-destructuring: 0
  object-shorthand: 0
  prefer-rest-params: 0