Files F101087276

utils.js
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Created: Wed, Feb 5, 15:06

utils.js
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	import invariant from 'invariant';

	var noop = function noop() {};

	function readOnlyPropType(handler, name) {
	return function (props, propName) {
	if (props[propName] !== undefined) {
	if (!props[handler]) {
	return new Error("You have provided a `" + propName + "` prop to `" + name + "` " + ("without an `" + handler + "` handler prop. This will render a read-only field. ") + ("If the field should be mutable use `" + defaultKey(propName) + "`. ") + ("Otherwise, set `" + handler + "`."));
	}
	}
	};
	}

	export function uncontrolledPropTypes(controlledValues, displayName) {
	var propTypes = {};
	Object.keys(controlledValues).forEach(function (prop) {
	// add default propTypes for folks that use runtime checks
	propTypes[defaultKey(prop)] = noop;

	if (process.env.NODE_ENV !== 'production') {
	var handler = controlledValues[prop];
	!(typeof handler === 'string' && handler.trim().length) ? process.env.NODE_ENV !== "production" ? invariant(false, 'Uncontrollable - [%s]: the prop `%s` needs a valid handler key name in order to make it uncontrollable', displayName, prop) : invariant(false) : void 0;
	propTypes[prop] = readOnlyPropType(handler, displayName);
	}
	});
	return propTypes;
	}
	export function isProp(props, prop) {
	return props[prop] !== undefined;
	}
	export function defaultKey(key) {
	return 'default' + key.charAt(0).toUpperCase() + key.substr(1);
	}
	/**
	* Copyright (c) 2013-present, Facebook, Inc.
	* All rights reserved.
	*
	* This source code is licensed under the BSD-style license found in the
	* LICENSE file in the root directory of this source tree. An additional grant
	* of patent rights can be found in the PATENTS file in the same directory.
	*/

	export function canAcceptRef(component) {
	return !!component && (typeof component !== 'function' \|\| component.prototype && component.prototype.isReactComponent);
	}

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