.eslintrc-es6.yaml

env:
  es6: true
parserOptions:
  ecmaVersion: 6
  sourceType: module
  ecmaFeatures:
    generators: false
    objectLiteralDuplicateProperties: false

rules:
  # enforces no braces where they can be omitted
  # http://eslint.org/docs/rules/arrow-body-style
  arrow-body-style:
  - error
  - as-needed
  - requireReturnForObjectLiteral: true

  # require parens in arrow function arguments
  # http://eslint.org/docs/rules/arrow-parens
  arrow-parens:
  - error
  - as-needed
  - requireForBlockBody: true

  # require space before/after arrow functions arrow
  # http://eslint.org/docs/rules/arrow-spacing
  arrow-spacing:
  - error
  - before: true
    after: true

  # verify super() callings in constructors
  constructor-super: error

  # enforce the spacing around the * in generator functions
  # http://eslint.org/docs/rules/generator-star-spacing
  generator-star-spacing:
  - error
  - before: true
    after: true

  # disallow modifying variables of class declarations
  # http://eslint.org/docs/rules/no-class-assign
  no-class-assign: error

  # disallow arrow functions where they could be confused with comparisons
  # http://eslint.org/docs/rules/no-confusing-arrow
  no-confusing-arrow:
  - error
  - allowParens: true

  # disallow modifying variables that are declared using const
  no-const-assign: error

  # disallow duplicate class members
  # http://eslint.org/docs/rules/no-dupe-class-members
  no-dupe-class-members: error

  # disallow importing from the same path more than once
  # http://eslint.org/docs/rules/no-duplicate-imports
  no-duplicate-imports: error

  # disallow symbol constructor
  # http://eslint.org/docs/rules/no-new-symbol
  no-new-symbol: error

  # disallow specific imports
  # http://eslint.org/docs/rules/no-restricted-imports
  no-restricted-imports: off

  # disallow to use this/super before super() calling in constructors.
  # http://eslint.org/docs/rules/no-this-before-super
  no-this-before-super: error

  no-unused-vars: error

  # disallow useless computed property keys
  # http://eslint.org/docs/rules/no-useless-computed-key
  no-useless-computed-key: error

  # disallow unnecessary constructor
  # http://eslint.org/docs/rules/no-useless-constructor
  no-useless-constructor: error

  # disallow renaming import, export, and destructured assignments to the same name
  # http://eslint.org/docs/rules/no-useless-rename
  no-useless-rename:
  - error
  - ignoreDestructuring: false
    ignoreImport: false
    ignoreExport: false

  # require let or const instead of var
  no-var: error

  # require method and property shorthand syntax for object literals to be consistent
  # http://eslint.org/docs/rules/object-shorthand
  object-shorthand:
  - error
  - consistent

  # suggest using arrow functions as callbacks
  prefer-arrow-callback:
  - error
  - allowNamedFunctions: false
    allowUnboundThis: true

  # suggest using of const declaration for variables that are never modified after declared
  prefer-const:
  - error
  - destructuring: any
    ignoreReadBeforeAssign: true

  # disallow parseInt() in favor of binary, octal, and hexadecimal literals
  # http://eslint.org/docs/rules/prefer-numeric-literals
  prefer-numeric-literals: error

  # use rest parameters instead of arguments
  # http://eslint.org/docs/rules/prefer-rest-params
  prefer-rest-params: error

  # suggest using the spread operator instead of .apply()
  # http://eslint.org/docs/rules/prefer-spread
  prefer-spread: error

  # suggest using template literals instead of string concatenation
  # http://eslint.org/docs/rules/prefer-template
  prefer-template: error

  # disallow generator functions that do not have yield
  # http://eslint.org/docs/rules/require-yield
  require-yield: error

  # enforce spacing between object rest-spread
  # http://eslint.org/docs/rules/rest-spread-spacing
  rest-spread-spacing:
  - error
  - never

  # import sorting
  # http://eslint.org/docs/rules/sort-imports
  sort-imports:
  - off
  - ignoreCase: false
    ignoreMemberSort: false
    memberSyntaxSortOrder: [none, all, multiple, single]

  # require a Symbol description
  # http://eslint.org/docs/rules/symbol-description
  symbol-description: error

  # enforce usage of spacing in template strings
  # http://eslint.org/docs/rules/template-curly-spacing
  template-curly-spacing: error

  # enforce spacing around the * in yield* expressions
  # http://eslint.org/docs/rules/yield-star-spacing
  yield-star-spacing:
  - error
  - after