nodejs.yml

# Base Node.js configuration

env:
  es6: true
  node: true

parserOptions:
  ecmaVersion: 9

rules:
  # See: http://eslint.org/docs/rules/

  # Possible Errors

  for-direction: 2
  getter-return: 2
  no-async-promise-executor: 2
  no-await-in-loop: 0
  no-compare-neg-zero: 2
  no-cond-assign: [2, always]
  no-console: 2
  no-constant-condition: [2, { checkLoops: false }]
  no-control-regex: 2
  no-debugger: 2
  no-dupe-args: 2
  no-dupe-else-if: 2
  no-dupe-keys: 2
  no-duplicate-case: 2
  no-empty-character-class: 2
  no-empty: 2
  no-ex-assign: 2
  no-extra-boolean-cast: 2
  no-extra-parens: 0
  no-extra-semi: 2
  no-func-assign: 2
  no-import-assign: 2
  no-inner-declarations: 2
  no-invalid-regexp: 2
  no-irregular-whitespace: 2
  no-misleading-character-class: 2
  no-obj-calls: 2
  no-prototype-builtins: 0
  no-regex-spaces: 2
  no-setter-return: 2
  no-sparse-arrays: 2
  no-template-curly-in-string: 2
  no-unexpected-multiline: 2
  no-unreachable: 2
  no-unsafe-finally: 2
  no-unsafe-negation: 2
  require-atomic-updates: 1 # warning, because of false positives: https://github.com/eslint/eslint/issues/11899
  use-isnan: 2
  valid-typeof: 2

  # Best Practices

  accessor-pairs: 0
  array-callback-return: 2
  block-scoped-var: 2
  class-methods-use-this: 2
  complexity: [1, 18]
  consistent-return: 0
  curly: [2, all]
  default-case: 0
  default-param-last: 2
  dot-location: [2, property]
  dot-notation: 2
  eqeqeq: 2
  grouped-accessor-pairs: 2
  guard-for-in: 2
  max-classes-per-file: 0
  no-alert: 2
  no-caller: 2
  no-case-declarations: 2
  no-constructor-return: 2
  no-div-regex: 0
  no-else-return: 2
  no-empty-function: 2
  no-empty-pattern: 2
  no-eq-null: 2
  no-eval: 2
  no-extend-native: 2
  no-extra-bind: 2
  no-extra-label: 2
  no-fallthrough: 0
  no-floating-decimal: 2
  no-global-assign: 2
  no-implicit-coercion: 2
  no-implicit-globals: 2
  no-implied-eval: 2
  no-invalid-this: 2
  no-iterator: 2
  no-labels: [2, { allowLoop: true }]
  no-lone-blocks: 2
  no-loop-func: 2
  no-magic-numbers: 0
  no-multi-spaces: [2, { ignoreEOLComments: true }]
  no-multi-str: 2
  no-new: 2
  no-new-func: 2
  no-new-wrappers: 2
  no-octal: 2
  no-octal-escape: 2
  no-param-reassign: 0
  no-proto: 2
  no-redeclare: 2
  no-restricted-properties: 0
  no-return-assign: 0
  no-return-await: 0
  no-script-url: 2
  no-self-assign: 2
  no-self-compare: 2
  no-sequences: 2
  no-throw-literal: 2
  no-unmodified-loop-condition: 2
  no-unused-expressions: 2
  no-unused-labels: 2
  no-useless-call: 2
  no-useless-catch: 2
  no-useless-concat: 2
  no-useless-escape: 2
  no-useless-return: 2
  no-void: 2
  no-warning-comments: 1
  no-with: 2
  prefer-named-capture-group: 0   # Supported from Node.js 10
  prefer-promise-reject-errors: 2
  prefer-regex-literals: 2
  radix: 2
  require-await: 2
  require-unicode-regexp: 0
  vars-on-top: 0
  wrap-iife: [2, outside]
  yoda: 2

  # Strict Mode

  strict: 0

  # Variables

  init-declarations: 0
  no-delete-var: 2
  no-label-var: 2
  no-restricted-globals: 0
  no-shadow: 0
  no-shadow-restricted-names: 2
  no-undef: [2, { typeof: true }]
  no-undef-init: 2
  no-undefined: 0
  no-unused-vars: 2
  no-use-before-define: 2

  # Node.js and CommonJS

  callback-return: 2
  global-require: 0
  handle-callback-err: [2, "^(err|error)$"]
  no-buffer-constructor: 2
  no-mixed-requires: 2
  no-new-require: 2
  no-path-concat: 2
  no-process-env: 0
  no-process-exit: 2
  no-restricted-modules: 0
  no-sync: 2

  # Stylistic Issues

  array-bracket-newline: 0
  array-bracket-spacing: [2, never]
  array-element-newline: 0
  block-spacing: [2, always]
  brace-style: [2, "1tbs"]
  camelcase: [2, { properties: never }]
  capitalized-comments: 0
  comma-dangle: [2, never]
  comma-spacing: [2, { before: false, after: true }]
  comma-style: [2, last]
  computed-property-spacing: [2, never]
  consistent-this: [2, that]
  eol-last: [2, always]
  func-call-spacing: [2, never]
  func-name-matching: 0
  func-names: 0
  func-style: [2, declaration, { allowArrowFunctions: true }]
  function-call-argument-newline: [2, consistent]
  function-paren-newline: [2, consistent]
  id-blacklist: 0
  id-length: 0
  id-match: 0
  implicit-arrow-linebreak: [2, beside]
  indent: [2, 2, { SwitchCase: 1 }]
  jsx-quotes: [2, prefer-double]
  key-spacing: [2, { beforeColon: false, afterColon: true, mode: strict }]
  keyword-spacing: [2, { before: true, after: true }]
  line-comment-position: 0
  linebreak-style: [2, unix]
  lines-around-comment: [2, { beforeBlockComment: true, allowBlockStart: true }]
  lines-between-class-members: [2, always, { exceptAfterSingleLine: true }]
  max-depth: [1, 6]
  max-len: [2, { code: 120, ignoreUrls: true }]
  max-lines: [1, { max: 1000, skipBlankLines: true, skipComments: true }]
  max-lines-per-function: [1, 100]
  max-nested-callbacks: [1, 6]
  max-params: 0
  max-statements: 0
  max-statements-per-line: [2, { max: 1 }]
  multiline-comment-style: 0
  multiline-ternary: 0
  new-cap: 2
  new-parens: 2
  newline-per-chained-call: 0
  no-array-constructor: 0
  no-bitwise: 0
  no-continue: 0
  no-inline-comments: 0
  no-lonely-if: 2
  no-mixed-operators: 2
  no-mixed-spaces-and-tabs: 2
  no-multi-assign: 0
  no-multiple-empty-lines: [2, { max: 2, maxEOF: 1, maxBOF: 0 }]
  no-negated-condition: 2
  no-nested-ternary: 2
  no-new-object: 2
  no-plusplus: 2
  no-restricted-syntax: [2, WithStatement]
  no-tabs: 2
  no-ternary: 0
  no-trailing-spaces: 2
  no-underscore-dangle: 0
  no-unneeded-ternary: 2
  no-whitespace-before-property: 2
  nonblock-statement-body-position: 0
  object-curly-newline: 0
  object-curly-spacing: [2, always]
  object-property-newline: 0
  one-var: 0
  one-var-declaration-per-line: 0
  operator-assignment: [2, always]
  operator-linebreak: [2, after]
  padded-blocks: [2, never]
  padding-line-between-statements: 0
  prefer-exponentiation-operator: 2
  prefer-object-spread: 2
  quote-props: [2, as-needed]
  quotes: [2, single, { avoidEscape: true, allowTemplateLiterals: true }]
  semi: [2, always]
  semi-spacing: [2, { before: false, after: true }]
  semi-style: 2
  sort-keys: 0
  sort-vars: 0
  space-before-blocks: [2, always]
  space-before-function-paren: [2, { anonymous: always, named: never, asyncArrow: always }]
  space-in-parens: [2, never]
  space-infix-ops: 2
  space-unary-ops: [2, { words: true, nonwords: false }]
  spaced-comment: [2, always]
  switch-colon-spacing: 2
  template-tag-spacing: 2
  unicode-bom: [2, never]
  wrap-regex: 0

  # ECMAScript 6

  arrow-body-style: 0
  arrow-parens: [2, always]
  arrow-spacing: 2
  constructor-super: 2
  generator-star-spacing: 2
  no-class-assign: 2
  no-confusing-arrow: 2
  no-const-assign: 2
  no-dupe-class-members: 2
  no-duplicate-imports: 2
  no-new-symbol: 2
  no-restricted-imports: 0
  no-this-before-super: 2
  no-useless-computed-key: 2
  no-useless-constructor: 2
  no-useless-rename: 2
  no-var: 2
  object-shorthand: 2
  prefer-arrow-callback: 2
  prefer-const: 2
  prefer-destructuring: 0
  prefer-numeric-literals: 2
  prefer-rest-params: 2
  prefer-spread: 2
  prefer-template: 2
  require-yield: 2
  rest-spread-spacing: [2, never]
  sort-imports: 0
  symbol-description: 0
  template-curly-spacing: [2, never]
  yield-star-spacing: [2, after]