.eslintrc.yml

env:
  node: true
  es6: true

extends:
  - "eslint:recommended"

rules:
  # Possible Errors
  no-console:
    - error
    -
      allow:
        - log
        - warn
        - error
  no-debugger: error
  no-dupe-args: error
  no-dupe-keys: error
  no-duplicate-case: error
  no-empty: error
  no-ex-assign: error
  no-extra-boolean-cast: error
  no-extra-semi: error
  no-sparse-arrays: error
  no-template-curly-in-string: warn
  no-unexpected-multiline: error
  no-unreachable: error
  no-unsafe-negation: error
  use-isnan: error
  # valid-jsdoc: error
  valid-typeof: error

  # Best Practices
  curly:
    - error
    - multi-or-nest
    - consistent
  eqeqeq:
    - error
    - always
    -
      null: ignore

  # Strict Mode
  strict:
    - error
    - safe

  # Variables
  # no-shadow:
  #   - error
  #   -
  #     builtinGlobals: true
  #     hoist: all
  #     allow:
  #       - resolve
  #       - reject
  #       - done
  #       - callback
  #       - cb
  #       - next
  no-undef-init: error
  no-undef: error
  no-undefined: error
  no-unused-vars:
    - error
    -
      vars: all
      args: after-used
  no-use-before-define: error

  # Node.js and CommonJS
  global-require: error
  no-new-require: error
  no-path-concat: error

  # Stylistic Issues
  array-bracket-spacing:
    - error
    - never
  block-spacing: error
  brace-style:
    - error
    - 1tbs
    -
      allowSingleLine: true
  camelcase: error
  comma-style:
    - error
    - last
  comma-spacing:
    - error
    -
      before: false
      after: true
  indent:
    - error
    - 2
    -
      SwitchCase: 0
      MemberExpression: 1
      FunctionDeclaration:
        parameters: 2
        body: 1
  linebreak-style:
    - error
    - unix
  quotes:
    - error
    - single
  semi:
    - error
    - always
  semi-spacing:
    - error
    -
      before: false
      after: true
  space-before-blocks:
    - error
    - always
  space-before-function-paren:
    - error
    -
      anonymous: always
      named: never
      asyncArrow: always
  space-in-parens:
    - error
    - never
  space-unary-ops:
    - error
    -
      words: true
      nonwords: false
  spaced-comment:
    - error
    - always
    -
      exceptions:
        - "-"
        - "+"
        - "*"

  # ECMAScript 6