| 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 {InternalInstance} from './renderer'; |
| 11 | |
| 12 | export function decorate(object: Object, attr: string, fn: Function): Function { |
| 13 | const old = object[attr]; |
| 14 | // $FlowFixMe[missing-this-annot] webpack config needs to be updated to allow `this` type annotations |
| 15 | object[attr] = function (instance: InternalInstance) { |
| 16 | return fn.call(this, old, arguments); |
| 17 | }; |
| 18 | return old; |
| 19 | } |
| 20 | |
| 21 | export function decorateMany( |
| 22 | source: Object, |
| 23 | fns: {[attr: string]: Function, ...}, |
| 24 | ): Object { |
| 25 | const olds: {[string]: $FlowFixMe} = {}; |
| 26 | for (const name in fns) { |
| 27 | olds[name] = decorate(source, name, fns[name]); |
| 28 | } |
| 29 | return olds; |
| 30 | } |
| 31 | |
| 32 | export function restoreMany(source: Object, olds: Object): void { |
| 33 | for (const name in olds) { |
| 34 | source[name] = olds[name]; |
| 35 | } |
| 36 | } |
| 37 | |
| 38 | // $FlowFixMe[missing-this-annot] webpack config needs to be updated to allow `this` type annotations |
| 39 | export function forceUpdate(instance: InternalInstance): void { |
| 40 | if (typeof instance.forceUpdate === 'function') { |
| 41 | instance.forceUpdate(); |
| 42 | } else if ( |
| 43 | instance.updater != null && |
| 44 | typeof instance.updater.enqueueForceUpdate === 'function' |
| 45 | ) { |
| 46 | instance.updater.enqueueForceUpdate(this, () => {}, 'forceUpdate'); |
| 47 | } |
| 48 | } |