content: /* @flow */
  
  // Note: we already have the definitions from
  // https://github.com/facebook/flow/blob/master/lib/react.js
  // so the below are merely helpful extensions.
  
  import React from 'react';
  
  export type ReactElement = React.Element<any>;
  
  export type ReactNode = string | number | ReactElement | Array<ReactElement>;
  
  export type ReactChild = ReactNode | boolean | void | null;
  
  export type ReactChildren = ReactChild | Array<ReactChildren>;
  