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no-typos.md

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Prevents common typos (react/no-typos)

Ensure no casing typos were made declaring static class properties and lifecycle methods. Checks that declared propTypes, contextTypes and childContextTypes is supported by react-props

Rule Details

This rule checks whether the declared static class properties and lifecycle methods related to React components do not contain any typos.

It makes sure that the following class properties have no casing typos:

  • propTypes
  • contextTypes
  • childContextTypes
  • defaultProps

and the following react lifecycle methods:

  • getDerivedStateFromProps
  • componentWillMount
  • UNSAFE_componentWillMount
  • componentDidMount
  • componentWillReceiveProps
  • UNSAFE_componentWillReceiveProps
  • shouldComponentUpdate
  • componentWillUpdate
  • UNSAFE_componentWillUpdate
  • getSnapshotBeforeUpdate
  • componentDidUpdate
  • componentDidCatch
  • componentWillUnmount
  • render

Examples of incorrect code for this rule:

class MyComponent extends React.Component {
  static PropTypes = {}
}

class MyComponent extends React.Component {
  static proptypes = {}
}

class MyComponent extends React.Component {
  static ContextTypes = {}
}

class MyComponent extends React.Component {
  static contexttypes = {}
}

class MyComponent extends React.Component {
  static ChildContextTypes = {}
}

class MyComponent extends React.Component {
  static childcontexttypes = {}
}

class MyComponent extends React.Component {
  static DefaultProps = {}
}

class MyComponent extends React.Component {
  static defaultprops = {}
}

class MyComponent extends React.Component {
  componentwillMount() {}
}

class MyComponent extends React.Component {
  ComponentWillReceiveProps() {}
}

class MyComponent extends React.Component {
  componentdidupdate() {}
}

class MyComponent extends React.Component {
  static propTypes = {
    a: PropTypes.typo
  }
}

class MyComponent extends React.Component {
  getDerivedStateFromProps() {}
}

Examples of correct code for this rule:

class MyComponent extends React.Component {
  static propTypes = {}
}

class MyComponent extends React.Component {
  static contextTypes = {}
}

class MyComponent extends React.Component {
  static childContextTypes = {}
}

class MyComponent extends React.Component {
  static defaultProps = {}
}

class MyComponent extends React.Component {
  componentWillMount() {}
}

class MyComponent extends React.Component {
  componentWillReceiveProps() {}
}

class MyComponent extends React.Component {
  componentDidUpdate() {}
}

class MyComponent extends React.Component {
  static propTypes = {
    a: PropTypes.bool.isRequired
  }
}