.eslintrc.yml

extends:
  - eslint:recommended

parserOptions:
  ecmaVersion: 12
  sourceType: module

env:
  es6: true

plugins:
  - prettier

root: true

rules:
  # Only list rules that are not in *:recommended set
  # If rules are set to disable the one in *:recommended, please elaborate the reason

  # Group - Best Practices
  no-async-promise-executor: error
  no-await-in-loop: error
  no-console:
    - error
    - allow:
        - error
        - warn
  # no-extra-parens: error # conflicts with prettier
  no-misleading-character-class: error
  no-template-curly-in-string: error
  require-atomic-updates: error
  accessor-pairs: error
  block-scoped-var: error
  class-methods-use-this:
    - error
    - exceptMethods:
        - render
  complexity: error
  curly: error
  default-case: error
  dot-notation: error
  eqeqeq: error
  max-classes-per-file:
    - error
    - 2
  no-alert: error
  no-caller: error
  no-div-regex: error
  no-else-return: error
  no-empty-function: error
  no-eq-null: error
  no-eval: error
  no-extend-native: error
  no-extra-bind: error
  no-extra-label: error
  no-implicit-globals: error
  no-implied-eval: error
  no-invalid-this: error
  no-iterator: error
  no-labels: error
  no-lone-blocks: error
  no-magic-numbers:
    - error
    - ignore:
        - 0
        - 1
  no-multi-spaces:
    - error
    - ignoreEOLComments: true
  no-multi-str: error
  no-new: error
  no-new-func: error
  no-new-wrappers: error
  no-octal-escape: error
  no-proto: error
  no-return-assign: error
  no-return-await: error
  no-script-url: error
  no-self-compare: error
  no-sequences: error
  no-throw-literal: error
  no-unmodified-loop-condition: error
  no-unused-expressions:
    - error
    - allowShortCircuit: true
      allowTernary: true
  no-useless-call: error
  no-useless-catch: error
  no-useless-concat: error
  no-useless-return: error
  no-void: error
  no-with: error
  prefer-promise-reject-errors: error
  radix: error
  require-await: error
  require-unicode-regexp: error
  wrap-iife: error
  yoda: error

  # Group - Variables
  no-label-var: error

  # Too easy for false positive
  # no-shadow:
  #   - error
  #   - builtinGlobals: true
  #     hoist: all

  no-shadow-restricted-names: error
  no-undef-init: error

  # "undefined" is commonly used for defaults
  # no-undefined: off

  no-unused-vars:
    - error
    - argsIgnorePattern: ^_$
      varsIgnorePattern: ^_

  no-use-before-define: error

  # Group - ECMAScript 6
  arrow-body-style:
    - error
    - as-needed

  arrow-parens:
    - error
    - as-needed

  arrow-spacing:
    - error
    - after: true
      before: true

  # Conflicts with Prettier
  # generator-star-spacing:
  # - error
  # - after

  # Will produce shorter code if "off"
  # no-confusing-arrow:
  # - error
  # - allowParens: true # This will conflict with no-extra-parens

  no-duplicate-imports: error
  no-useless-computed-key: error
  no-useless-constructor: error
  no-useless-rename: error
  no-var: error
  object-shorthand: error
  prefer-arrow-callback: error
  prefer-const: error
  prefer-destructuring: error
  prefer-rest-params: error
  prefer-spread: error

  # This will force, a + '', into, `${ a }`, which increase code length
  # prefer-template: error

  rest-spread-spacing:
    - error
    - never

  # Cannot group global or local imports and sort in differently
  sort-imports:
    - error
    - allowSeparatedGroups: true
      ignoreCase: true
      memberSyntaxSortOrder:
        - none
        - all
        - single
        - multiple

  template-curly-spacing:
    - error
    - never

  yield-star-spacing:
    - error
    - after

  # plugin:prettier
  prettier/prettier: error