| 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 {disableCommentsAsDOMContainers} from 'shared/ReactFeatureFlags'; |
| 11 | |
| 12 | import { |
| 13 | ELEMENT_NODE, |
| 14 | COMMENT_NODE, |
| 15 | DOCUMENT_NODE, |
| 16 | DOCUMENT_FRAGMENT_NODE, |
| 17 | } from './HTMLNodeType'; |
| 18 | |
| 19 | export function isValidContainer(node: any): boolean { |
| 20 | return !!( |
| 21 | node && |
| 22 | (node.nodeType === ELEMENT_NODE || |
| 23 | node.nodeType === DOCUMENT_NODE || |
| 24 | node.nodeType === DOCUMENT_FRAGMENT_NODE || |
| 25 | (!disableCommentsAsDOMContainers && |
| 26 | node.nodeType === COMMENT_NODE && |
| 27 | (node as any).nodeValue === ' react-mount-point-unstable ')) |
| 28 | ); |
| 29 | } |