.eslintrc.yml

---
env:
  node: false
  es6: true
  mocha: true

parserOptions:
  ecmaVersion: 2017
  ecmaFeatures:
    arrowFunctions: true
    blockBindings: true
    classes: true
    defaultParams: true
    destructuring: true
    experimentalObjectRestSpread: true
    forOf: true
    generators: false
    modules: true
    objectLiteralComputedProperties: true
    objectLiteralDuplicateProperties: false
    objectLiteralShorthandMethods: true
    objectLiteralShorthandProperties: true
    spread: true
    superInFunctions: true
    templateStrings: true
    jsx: false
  sourceType: module

rules:
  # Possible Errors
  comma-dangle: 0
  no-cond-assign: 2
  no-console: 0
  no-constant-condition: 2
  no-control-regex: 0
  no-debugger: 2
  no-dupe-args: 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: [2, functions]
  no-extra-semi: 2
  no-func-assign: 2
  no-inner-declarations: 0
  no-invalid-regexp: 2
  no-irregular-whitespace: 2
  no-negated-in-lhs: 2
  no-obj-calls: 2
  no-regex-spaces: 0
  no-reserved-keys: 0
  no-sparse-arrays: 2
  no-unreachable: 2
  use-isnan: 2
  valid-jsdoc: 0
  valid-typeof: 2
  no-unexpected-multiline: 2

  # Best Practices
  array-callback-return: 2
  block-scoped-var: 2
  curly: 0
  default-case: 2
  dot-notation: 2
  dot-location: [2, property]
  eqeqeq: 2
  no-caller: 2
  no-else-return: 0
  no-eq-null: 2
  no-eval: 2
  no-extend-native: 2
  no-fallthrough: 2
  no-floating-decimal: 2
  no-loop-func: 2
  no-multi-spaces: 2
  no-multi-str: 2
  no-proto: 2
  no-redeclare: [2, {builtinGlobals: false}]
  no-return-assign: 2
  no-unmodified-loop-condition: 2
  no-unused-expressions: 2
  no-void: 2

  # Strict Mode
  strict: [2, never]

  # Variables
  no-undef-init: 2
  no-undef: 2
  no-unused-vars: 2
  no-use-before-define: [2, nofunc]

  # Node.js and Common.js
  no-mixed-requires: 2
  no-new-require: 2

  # Stylistic Issues
  block-spacing: 2
  camelcase: [2, {properties: never}]
  comma-spacing: [2, {before: false, after: true}]
  comma-style: [2, last]
  computed-property-spacing: [2, never]
  eol-last: 0
  indent: [2, 2, { SwitchCase: 1 }]
  key-spacing: [2, {beforeColon: false, afterColon: true}]
  linebreak-style: [2, unix]
  max-nested-callbacks: [2, 10]
  new-cap: 0
  new-parens: 2
  no-multiple-empty-lines: [2, {max: 2}]
  no-nested-ternary: 2
  no-spaced-func: 2
  no-ternary: 0
  no-trailing-spaces: 2
  no-unneeded-ternary: 2
  no-whitespace-before-property: 2
  object-curly-spacing: [2, never]
  operator-linebreak: [2, after]
  quote-props: [2, as-needed]
  quotes: [2, single, avoid-escape]
  semi: 2
  semi-spacing: 2
  keyword-spacing: 2
  space-before-blocks: [2, always]
  space-before-function-paren: [2, {anonymous: always, named: never, asyncArrow: always}]
  space-in-parens: [2, never]
  space-infix-ops: 0
  space-unary-ops: 2

  # ECMAScript 6
  arrow-parens: [2, as-needed]
  arrow-spacing: 2
  constructor-super: 2
  generator-star-spacing: [2, {before: false, after: true}]
  no-class-assign: 2
  no-confusing-arrow: 2
  no-const-assign: 2
  no-dupe-class-members: 2
  #no-var: 2
  #object-shorthand: 2
  #prefer-arrow-callback: 1
  #prefer-const: 1
  #prefer-spread: 1
  prefer-template: 1
  template-curly-spacing: 2