.eslintrc.yml

---
  root: true
  extends: eslint:recommended
  env:
    node: true
    es6: true
  parserOptions:
    ecmaVersion: 2018
  rules:
    accessor-pairs:
      - warn
      - setWithoutGet: true
        getWithoutSet: false
    array-bracket-newline:
      - error
      - consistent
    array-bracket-spacing:
      - error
      - never
    array-callback-return:
      - warn
    array-element-newline:
      - error
      - consistent
    brace-style:
      - error
      - 1tbs
    class-methods-use-this:
      - warn
    comma-dangle:
      - error
      - always-multiline
    comma-spacing:
      - error
      - before: false
        after: true
    comma-style:
      - error
      - last
    complexity:
      - warn
      - max: 20
    consistent-return:
      - warn
    curly:
      - error
      - all
    default-case:
      - warn
      - commentPattern: ^no default$
    dot-location:
      - error
      - property
    dot-notation:
      - error
    eol-last:
      - error
      - always
    func-call-spacing:
      - error
      - never
    function-paren-newline:
      - error
      - consistent
    guard-for-in:
      - warn
    indent:
      - error
      - 2
    key-spacing:
      - error
      - beforeColon: false
        afterColon: true
    keyword-spacing:
      - error
      - before: true
        after: true
    linebreak-style:
      - error
      - unix
    max-classes-per-file:
      - warn
      - 1
    max-depth:
      - warn
      - max: 5
    max-len:
      - warn
      - code: 240
    max-lines:
      - warn
      - max: 300
    max-nested-callbacks:
      - warn
      - max: 5
    max-params:
      - warn
      - max: 5
    max-statements:
      - warn
      - max: 100
    max-statements-per-line:
      - error
      - max: 1
    multiline-ternary:
      - error
      - always-multiline
    new-parens:
      - error
      - always
    newline-per-chained-call:
      - warn
      - ignoreChainWithDepth: 3
    no-array-constructor:
      - error
    no-caller:
      - error
    no-empty-function:
      - warn
    no-eq-null:
      - error
    no-eval:
      - error
    no-extend-native:
      - error
    no-extra-bind:
      - error
    no-floating-decimal:
      - error
    no-implicit-coercion:
      - error
    no-implied-eval:
      - error
    no-invalid-this:
      - error
    no-iterator:
      - error
    no-labels:
      - error
    no-lone-blocks:
      - error
    no-lonely-if:
      - error
    no-multi-assign:
      - error
    no-multi-str:
      - warn
    no-negated-condition:
      - warn
    no-new:
      - error
    no-new-func:
      - error
    no-new-object:
      - error
    no-new-wrappers:
      - error
    no-octal-escape:
      - error
    no-proto:
      - error
    no-return-assign:
      - warn
    no-return-await:
      - error
    no-script-url:
      - error
    no-self-compare:
      - error
    no-sequences:
      - error
    no-template-curly-in-string:
      - warn
    no-trailing-spaces:
      - error
      - skipBlankLines: true
    no-undef-init:
      - error
    no-undefined:
      - error
    no-unmodified-loop-condition:
      - error
    no-unneeded-ternary:
      - error
      - defaultAssignment: false
    no-unused-expressions:
      - error
    no-use-before-define:
      - error
      - nofunc
    no-useless-call:
      - error
    no-useless-concat:
      - warn
    no-useless-return:
      - error
    no-void:
      - error
    no-warning-comments:
      - warn
      - terms:
          - todo
        location: start
    no-whitespace-before-property:
      - error
    object-curly-newline:
      - error
      - consistent: true
    object-curly-spacing:
      - error
      - never
    object-property-newline:
      - error
      - allowAllPropertiesOnSameLine: true
    one-var:
      - error
      - uninitialized: consecutive
    operator-assignment:
      - warn
      - always
    operator-linebreak:
      - error
      - after
      - overrides:
          ?: before
          :: before
    quotes:
      - error
      - single
      - avoidEscape: true
    radix:
      - warn
      - as-needed
    require-await:
      - warn
    require-unicode-regexp:
      - warn
    semi:
      - error
      - never
    semi-spacing:
      - error
      - before: false
        after: false
    semi-style:
      - error
      - first
    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
    spaced-comment:
      - error
      - always
      - exceptions:
          - "-"
          - "*"
    strict:
      - error
      - safe
    switch-colon-spacing:
      - error
      - before: false
        after: true
    template-tag-spacing:
      - error
      - never
    unicode-bom:
      - error
      - never
    wrap-iife:
      - error
      - inside
      - functionPrototypeMethods: true
    yoda:
      - error
      - never
      - exceptRange: true
    #
    # ES6
    #
    arrow-body-style:
      - error
      - as-needed
    arrow-parens:
      - warn
      - as-needed
    arrow-spacing:
      - error
      - before: true
        after: true
    generator-star-spacing:
      - error
      - before: false
        after: true
        method: neither
    no-confusing-arrow:
      - warn
      - allowParens: true
    no-useless-computed-key:
      - error
    no-useless-constructor:
      - error
    no-useless-rename:
      - error
    no-var:
      - error
    rest-spread-spacing:
      - error
      - never
    symbol-description:
      - error
    template-curly-spacing:
      - error
      - never
    yield-star-spacing:
      - error
      - after
    #
    # Node.js
    #
    callback-return:
      - warn
      - - callback
        - cb
        - next
        - done
        - resolve
        - reject
    global-require:
      - warn
    handle-callback-err:
      - warn
      - (err|error)
    no-buffer-constructor:
      - error
    no-new-require:
      - error
    no-path-concat:
      - error
    no-sync:
      - warn