29 lines
1.0 KiB
Vue
29 lines
1.0 KiB
Vue
export class AbortablePromise<T> {
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promise: Promise<T>
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private _reject: ((res?: any) => void) | null = null
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constructor(executor: (resolve: (value: T | PromiseLike<T>) => void, reject: (reason?: any) => void) => void) {
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this.promise = new Promise<T>((resolve, reject) => {
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executor(resolve, reject)
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this._reject = reject // 保存reject方法的引用，以便在abort时调用
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})
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}
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// 提供abort方法来中止Promise
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abort(error?: any) {
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if (this._reject) {
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this._reject(error) // 调用reject方法来中止Promise
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}
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}
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then<TResult1 = T, TResult2 = never>(
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onfulfilled?: ((value: T) => TResult1 | PromiseLike<TResult1>) | undefined | null,
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onrejected?: ((reason: any) => TResult2 | PromiseLike<TResult2>) | undefined | null
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): Promise<TResult1 | TResult2> {
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return this.promise.then(onfulfilled, onrejected)
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}
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catch<TResult = never>(onrejected?: ((reason: any) => TResult | PromiseLike<TResult>) | undefined | null): Promise<T | TResult> {
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return this.promise.catch(onrejected)
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}
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}
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