Mocking out a TextInput with jest

jest_textinput_mock.js

jest.mock( 'TextInput', () => {
  const RealComponent = require.requireActual( 'TextInput' )
  const React = require( 'React' )
  class TextInput extends React.Component {
    render() {
      delete this.props.autoFocus
      return React.createElement( 'TextInput', this.props, this.props.children )
    }
  }
  TextInput.propTypes = RealComponent.propTypes
  return TextInput
} )