| 1 | /** |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * |
| 4 | * This source code is licensed under the MIT license found in the |
| 5 | * LICENSE file in the root directory of this source tree. |
| 6 | * |
| 7 | * @flow |
| 8 | */ |
| 9 | |
| 10 | import {useSyncExternalStore as client} from './useSyncExternalStoreShimClient'; |
| 11 | import {useSyncExternalStore as server} from './useSyncExternalStoreShimServer'; |
| 12 | import {isServerEnvironment} from './isServerEnvironment'; |
| 13 | import {useSyncExternalStore as builtInAPI} from 'react'; |
| 14 | |
| 15 | const shim = isServerEnvironment ? server : client; |
| 16 | |
| 17 | export const useSyncExternalStore: <T>( |
| 18 | subscribe: (() => void) => () => void, |
| 19 | getSnapshot: () => T, |
| 20 | getServerSnapshot?: () => T, |
| 21 | ) => T = builtInAPI !== undefined ? builtInAPI : shim; |