80 lines
2.4 KiB
JavaScript
80 lines
2.4 KiB
JavaScript
/**
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* Copyright 2014-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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*
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*/
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'use strict';
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// The Symbol used to tag the special React types. If there is no native Symbol
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// nor polyfill, then a plain number is used for performance.
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var REACT_COROUTINE_TYPE = typeof Symbol === 'function' && Symbol['for'] && Symbol['for']('react.coroutine') || 0xeac8;
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var REACT_YIELD_TYPE = typeof Symbol === 'function' && Symbol['for'] && Symbol['for']('react.yield') || 0xeac9;
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exports.createCoroutine = function (children, handler, props) {
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var key = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;
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var coroutine = {
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// This tag allow us to uniquely identify this as a React Coroutine
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$$typeof: REACT_COROUTINE_TYPE,
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key: key == null ? null : '' + key,
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children: children,
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handler: handler,
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props: props
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};
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if (process.env.NODE_ENV !== 'production') {
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// TODO: Add _store property for marking this as validated.
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if (Object.freeze) {
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Object.freeze(coroutine.props);
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Object.freeze(coroutine);
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}
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}
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return coroutine;
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};
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exports.createYield = function (props, continuation) {
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var key = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;
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var yieldNode = {
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// This tag allow us to uniquely identify this as a React Yield
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$$typeof: REACT_YIELD_TYPE,
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key: key == null ? null : '' + key,
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props: props,
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continuation: continuation
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};
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if (process.env.NODE_ENV !== 'production') {
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// TODO: Add _store property for marking this as validated.
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if (Object.freeze) {
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Object.freeze(yieldNode.props);
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Object.freeze(yieldNode);
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}
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}
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return yieldNode;
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};
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/**
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* Verifies the object is a coroutine object.
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*/
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exports.isCoroutine = function (object) {
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return typeof object === 'object' && object !== null && object.$$typeof === REACT_COROUTINE_TYPE;
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};
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/**
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* Verifies the object is a yield object.
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*/
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exports.isYield = function (object) {
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return typeof object === 'object' && object !== null && object.$$typeof === REACT_YIELD_TYPE;
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};
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exports.REACT_YIELD_TYPE = REACT_YIELD_TYPE;
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exports.REACT_COROUTINE_TYPE = REACT_COROUTINE_TYPE; |