.eslintrc.yml

%YAML 1.2
---
parser: babel-eslint

extends:
  - eslint:recommended
  - plugin:react/recommended
  - plugin:flowtype/recommended
  - plugin:import/errors
  - plugin:import/warnings
  - prettier
  - prettier/flowtype
  - prettier/react

plugins:
  - babel
  - react
  - flowtype

settings:
  react:
    version: '16.5'
    flowVersion: '0.81'

env:
  browser: true
  es6: true

globals:
  # node globals
  global: false
  require: false
  process: false
  module: false

  # webpack.DefinePlugin
  VERSION: false
  APP_BASE: false

rules:
  # best practices
  array-callback-return: warn
  camelcase: error
  consistent-this: [warn, self]
  curly: [error, multi-line]
  default-case: error
  eqeqeq: [error, smart]
  guard-for-in: error
  new-cap: off
  no-await-in-loop: warn
  no-case-declarations: error
  no-class-assign: error
  no-console: off
  no-const-assign: error
  no-div-regex: error
  no-extra-label: error
  no-fallthrough: error
  no-implicit-coercion: [error, {boolean: true, number: true, string: true}]
  no-implicit-globals: error
  no-new-symbol: error
  no-redeclare: ['error', {builtinGlobals: true}]
  no-restricted-syntax: [error, WithStatement]
  no-self-assign: warn
  no-undef-init: off
  no-underscore-dangle: off
  no-unmodified-loop-condition: error
  no-unused-labels: error
  no-unused-vars:
    - 'warn'
    - args: 'after-used'
      varsIgnorePattern: '^_'
      argsIgnorePattern: '^_'
      ignoreRestSiblings: true
  no-useless-constructor: error
  no-var: error
  prefer-spread: warn

  # react rules – https://github.com/yannickcr/eslint-plugin-react
  react/display-name: off
  react/no-did-mount-set-state: warn
  react/no-did-update-set-state: warn
  react/no-multi-comp: off # prevent multiple component definition per file
  react/self-closing-comp: warn # prevent extra closing tags for components without children
  # react/sort-comp: warn
  react/sort-prop-types: warn
  react/wrap-multilines: off
  react/no-unescaped-entities: off

  flowtype/no-types-missing-file-annotation: off

  # jsdoc
  valid-jsdoc:
    - warn
    - prefer: {return: 'returns', arg: 'param', argument: 'param'}