Repository: airbnb/javascript
File: packages/eslint-config-airbnb/rules/react.js (JavaScript)

Code before:
module.exports = {
  'plugins': [
    'react'
  ],
  'ecmaFeatures': {
    'jsx': true
  },
  'rules': {
    // Prevent missing displayName in a React component definition
    'react/display-name': 0,
    // Forbid certain propTypes (any, array, object)
    'react/forbid-prop-types': 0,
    // Enforce boolean attributes notation in JSX
    'react/jsx-boolean-value': 2,
    // Validate closing bracket location in JSX
    'react/jsx-closing-bracket-location': 2,
    // Enforce or disallow spaces inside of curly braces in JSX attributes
    'react/jsx-curly-spacing': 0,
    // Validate props indentation in JSX
    'react/jsx-indent-props': [2, 2],
    // Limit maximum of props on a single line in JSX
    'react/jsx-max-props-per-line': 0,
    // Prevent duplicate props in JSX
    'react/jsx-no-duplicate-props': 0,
    // Prevent usage of unwrapped JSX strings
    'react/jsx-no-literals': 0,
    // Disallow undeclared variables in JSX
    'react/jsx-no-undef': 2,
    // Enforce quote style for JSX attributes
    'react/jsx-quotes': 0,
    // Enforce propTypes declarations alphabetical sorting
    'react/jsx-sort-prop-types': 0,
    // Enforce props alphabetical sorting
    'react/jsx-sort-props': 0,
    // Prevent React to be incorrectly marked as unused
    'react/jsx-uses-react': 2,
    // Prevent variables used in JSX to be incorrectly marked as unused
    'react/jsx-uses-vars': 2,
    // Prevent usage of dangerous JSX properties
    'react/no-danger': 0,
    // Prevent usage of setState in componentDidMount
    'react/no-did-mount-set-state': [2, 'allow-in-func'],
    // Prevent usage of setState in componentDidUpdate
    'react/no-did-update-set-state': 2,
    // Prevent multiple component definition per file
    'react/no-multi-comp': 2,
    // Prevent usage of setState
    'react/no-set-state': 0,
    // Prevent usage of unknown DOM property
    'react/no-unknown-property': 2,
    // Prefer es6 class instead of createClass for React Components
    'react/prefer-es6-class': 0,
    // Prevent missing props validation in a React component definition
    'react/prop-types': 2,
    // Prevent missing React when using JSX
    'react/react-in-jsx-scope': 2,
    // Restrict file extensions that may be required
    'react/require-extension': 0,
    // Prevent extra closing tags for components without children
    'react/self-closing-comp': 2,
    // Enforce component methods order
    'react/sort-comp': [2, {
      'order': [
        'lifecycle',
        '/^on.+$/',
        '/^(get|set)(?!(InitialState$|DefaultProps$|ChildContext$)).+$/',
        'everything-else',
        '/^render.+$/',
        'render'
      ]
    }],
    // Prevent missing parentheses around multilines JSX
    'react/wrap-multilines': 2
  }
};


Review comment (suggestion):
Thanks - please use a configuration of `{ "nonEmpty": "tag-aligned", "selfClosing": "tag-aligned" }` such that in a multiline component declaration, `/>` should always be on its own line, aligned with the opening tag.


Code after:
module.exports = {
  'plugins': [
    'react'
  ],
  'ecmaFeatures': {
    'jsx': true
  },
  // View link below for react rules documentation
  // https://github.com/yannickcr/eslint-plugin-react#list-of-supported-rules
  'rules': {
    // Prevent missing displayName in a React component definition
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/display-name.md
    'react/display-name': [0, {'acceptTranspilerName', false}],
    // Forbid certain propTypes (any, array, object)
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/forbid-prop-types.md
    'react/forbid-prop-types': [0, {'forbid': ['any', 'array', 'object']}],
    // Enforce boolean attributes notation in JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-boolean-value.md
    'react/jsx-boolean-value': [2, 'never'],
    // Validate closing bracket location in JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-closing-bracket-location.md
    'react/jsx-closing-bracket-location': [2, 'line-aligned'],
    // Enforce or disallow spaces inside of curly braces in JSX attributes
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-curly-spacing.md
    'react/jsx-curly-spacing': [0, 'never', {'allowMultiline': true}],
    // Enforce event handler naming conventions in JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-handler-names.md
    'react/jsx-handler-names': [0, {
      'eventHandlerPrefix': 'handle',
      'eventHandlerPropPrefix': 'on',
    }],
    // Validate props indentation in JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-indent-props.md
    'react/jsx-indent-props': [2, 2],
    // Validate JSX has key prop when in array or iterator
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-key.md
    'react/jsx-key': 0,
    // Limit maximum of props on a single line in JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-max-props-per-line.md
    'react/jsx-max-props-per-line': [0, {'maximum': 1}],
    // Prevent usage of .bind() and arrow functions in JSX props
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-no-bind.md
    'react/jsx-no-bind': 2,
    // Prevent duplicate props in JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-no-duplicate-props.md
    'react/jsx-no-duplicate-props': [0, {'ignoreCase': false}],
    // Prevent usage of unwrapped JSX strings
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-no-literals.md
    'react/jsx-no-literals': 0,
    // Disallow undeclared variables in JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-no-undef.md
    'react/jsx-no-undef': 2,
    // Enforce PascalCase for user-defined JSX components
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-pascal-case.md
    'react/jsx-pascal-case': 0,
    // Enforce propTypes declarations alphabetical sorting
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-sort-prop-types.md
    'react/jsx-sort-prop-types': [0, {
      'ignoreCase': false,
      'callbacksLast': false,
    }],
    // Enforce props alphabetical sorting
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-sort-props.md
    'react/jsx-sort-props': [0, {
      'ignoreCase': false,
      'callbacksLast': false,
    }],
    // Prevent React to be incorrectly marked as unused
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-uses-react.md
    'react/jsx-uses-react': [2, {'pragma': 'React'}],
    // Prevent variables used in JSX to be incorrectly marked as unused
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/jsx-uses-vars.md
    'react/jsx-uses-vars': 2,
    // Prevent usage of dangerous JSX properties
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-danger.md
    'react/no-danger': 0,
    // Prevent usage of deprecated methods
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-deprecated.md
    'react/no-deprecated': [1, {"react": "0.14.0"}],
    // Prevent usage of setState in componentDidMount
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-did-mount-set-state.md
    'react/no-did-mount-set-state': [2, 'allow-in-func'],
    // Prevent usage of setState in componentDidUpdate
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-did-update-set-state.md
    'react/no-did-update-set-state': [2, 'allow-in-func'],
    // Prevent direct mutation of this.state
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-direct-mutation-state.md
    'react/no-direct-mutation-state': 0,
    // Prevent usage of isMounted
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-is-mounted.md
    'react/no-is-mounted': 2,
    // Prevent multiple component definition per file
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-multi-comp.md
    'react/no-multi-comp': [2, {'ignoreStateless': false}],
    // Prevent usage of setState
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-set-state.md
    'react/no-set-state': 0,
    // Prevent using string references
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-string-refs.md
    'react/no-string-refs': 0,
    // Prevent usage of unknown DOM property
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/no-unknown-property.md
    'react/no-unknown-property': 2,
    // Require ES6 class declarations over React.createClass
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/prefer-es6-class.md
    'react/prefer-es6-class': [2, 'always'],
    // Prevent missing props validation in a React component definition
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/prop-types.md
    'react/prop-types': [2, {'ignore': [], customValidators: []}],
    // Prevent missing React when using JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/react-in-jsx-scope.md
    'react/react-in-jsx-scope': 2,
    // Restrict file extensions that may be required
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/require-extension.md
    'react/require-extension': [0, {'extensions': ['.jsx']}],
    // Prevent extra closing tags for components without children
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/self-closing-comp.md
    'react/self-closing-comp': 2,
    // Enforce component methods order
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/sort-comp.md
    'react/sort-comp': [2, {
      'order': [
        'lifecycle',
        '/^on.+$/',
        '/^(get|set)(?!(InitialState$|DefaultProps$|ChildContext$)).+$/',
        'everything-else',
        '/^render.+$/',
        'render'
      ]
    }],
    // Prevent missing parentheses around multilines JSX
    // https://github.com/yannickcr/eslint-plugin-react/blob/master/docs/rules/wrap-multilines.md
    'react/wrap-multilines': [2, {
      declaration: true,
      assignment: true,
      return: true
    }],
  }
};