javascript React的Nullable PropType

Posted 2021-05-04

/**
 * Usage:
 * 
 * import React from 'react';
 * import nullable from 'prop_nullable';
 * 
 * let myClass = React.createClass({
 *    propTypes: {
 *      myProp: nullable( React.PropTypes.string ).isRequired,
 *      myOtherProp: nullable( [React.PropTypes.string, React.PropTypes.number] )
 *    }
 * });
 */
import { PropTypes } from 'react';

let { oneOf, oneOfType } = PropTypes;

export default types => oneOfType( [ oneOf( [ null ] ), ...[].concat( types ) ] );