| /** | |
| * A `Promise.withResolvers` implementation that exposes the `resolve` and | |
| * `reject` functions on a `Promise`. | |
| * | |
| * @see https://tc39.es/proposal-promise-with-resolvers/ | |
| */ | |
| export class DetachedPromise<T = any> { | |
| public readonly resolve: (value: T | PromiseLike<T>) => void | |
| public readonly reject: (reason: any) => void | |
| public readonly promise: Promise<T> | |
| constructor() { | |
| let resolve: (value: T | PromiseLike<T>) => void | |
| let reject: (reason: any) => void | |
| // Create the promise and assign the resolvers to the object. | |
| this.promise = new Promise<T>((res, rej) => { | |
| resolve = res | |
| reject = rej | |
| }) | |
| // We know that resolvers is defined because the Promise constructor runs | |
| // synchronously. | |
| this.resolve = resolve! | |
| this.reject = reject! | |
| } | |
| } | |