-- upstream: https://github.com/facebook/react/blob/a89854bc936668d325cac9a22e2ebfa128c7addf/packages/shared/ReactVersion.js
--!strict
--[[*
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 ]]