Function hasValidKey

lib/assets/react-source/development/react.js:976–988

(config)

	}

	function hasValidKey(config) {
	  {
	    if (hasOwnProperty.call(config, 'key')) {
	      var getter = Object.getOwnPropertyDescriptor(config, 'key').get;

	      if (getter && getter.isReactWarning) {
	        return false;
	      }
	    }
	  }

	  return config.key !== undefined;
	}

	function defineKeyPropWarningGetter(props, displayName) {
	  var warnAboutAccessingKey = function () {