| 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 type {HostInstance} from './types'; |
| 11 | |
| 12 | // Some environments (e.g. React Native / Hermes) don't support the performance API yet. |
| 13 | export const getCurrentTime: () => number = |
| 14 | // $FlowFixMe[method-unbinding] |
| 15 | typeof performance === 'object' && typeof performance.now === 'function' |
| 16 | ? () => performance.now() |
| 17 | : () => Date.now(); |
| 18 | |
| 19 | // Ideally, this should be injected from Reconciler config |
| 20 | export function getPublicInstance(instance: HostInstance): HostInstance { |
| 21 | // Typically the PublicInstance and HostInstance is the same thing but not in Fabric. |
| 22 | // So we need to detect this and use that as the public instance. |
| 23 | |
| 24 | // React Native. Modern. Fabric. |
| 25 | if (typeof instance === 'object' && instance !== null) { |
| 26 | if (typeof instance.canonical === 'object' && instance.canonical !== null) { |
| 27 | if ( |
| 28 | typeof instance.canonical.publicInstance === 'object' && |
| 29 | instance.canonical.publicInstance !== null |
| 30 | ) { |
| 31 | return instance.canonical.publicInstance; |
| 32 | } |
| 33 | } |
| 34 | |
| 35 | // React Native. Legacy. Paper. |
| 36 | if (typeof instance._nativeTag === 'number') { |
| 37 | return instance._nativeTag; |
| 38 | } |
| 39 | } |
| 40 | |
| 41 | // React Web. Usually a DOM element. |
| 42 | return instance; |
| 43 | } |
| 44 | |
| 45 | export function getNativeTag(instance: HostInstance): number | null { |
| 46 | if (typeof instance !== 'object' || instance === null) { |
| 47 | return null; |
| 48 | } |
| 49 | |
| 50 | // Modern. Fabric. |
| 51 | if ( |
| 52 | instance.canonical != null && |
| 53 | typeof instance.canonical.nativeTag === 'number' |
| 54 | ) { |
| 55 | return instance.canonical.nativeTag; |
| 56 | } |
| 57 | |
| 58 | // Legacy. Paper. |
| 59 | if (typeof instance._nativeTag === 'number') { |
| 60 | return instance._nativeTag; |
| 61 | } |
| 62 | |
| 63 | return null; |
| 64 | } |