* Attach the keys as a property of the regexp. * * @param {!RegExp} re * @param {Array} keys * @return {!RegExp}

* Push an update, if any, onto the queue. Creates a new queue if none is * passed and always returns the queue. Mutative.

* Same as document.activeElement but wraps in a try-catch block. In IE it is * not safe to call document.activeElement if there is nothing focused.

* Given a ReactNode, create an instance that will actually be mounted. * * @param {ReactNode} node * @param {boolean} shouldHaveDebugID * @return

* inlined Object.is polyfill to avoid requiring consumers ship their own * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_O

* Copyright (c) 2013-present, Facebook, Inc. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directo

* Processes any enqueued updates. * * @private

* Given a `prevElement` and `nextElement`, determines if the existing * instance should be updated as opposed to being destroyed or replaced by a new