| 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 | |
| 8 | import type {ReactNode} from 'react'; |
| 9 | |
| 10 | import {useEffect, useState} from 'react'; |
| 11 | |
| 12 | /** |
| 13 | * Hide children until the given timestamp. |
| 14 | */ |
| 15 | export function Delayed({ |
| 16 | children, |
| 17 | hideUntil, |
| 18 | }: { |
| 19 | children: ReactNode; |
| 20 | hideUntil: Date; |
| 21 | }): JSX.Element { |
| 22 | const [visible, setVisible] = useState(false); |
| 23 | useEffect(() => { |
| 24 | const delay = hideUntil.getTime() - Date.now(); |
| 25 | if (delay > 0) { |
| 26 | setVisible(false); |
| 27 | const timer = setTimeout(() => { |
| 28 | setVisible(true); |
| 29 | }, delay); |
| 30 | return () => clearTimeout(timer); |
| 31 | } else { |
| 32 | setVisible(true); |
| 33 | } |
| 34 | }, [hideUntil, setVisible]); |
| 35 | |
| 36 | // Cast to JSX.Element to make testing-library happy. |
| 37 | return (visible ? children : null) as JSX.Element; |
| 38 | } |
| 39 | |