41 lines
1.2 KiB
TypeScript
41 lines
1.2 KiB
TypeScript
/*
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Copyright 2023 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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export class Deferred<T> {
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public readonly promise: Promise<T>;
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public readonly resolve: (value: T) => void;
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public readonly reject: (err: Error) => void;
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private _value?: T;
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constructor() {
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let resolve;
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let reject;
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this.promise = new Promise<T>((_resolve, _reject) => {
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resolve = _resolve;
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reject = _reject;
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})
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this.resolve = (value: T) => {
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this._value = value;
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resolve(value);
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};
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this.reject = reject;
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}
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get value(): T | undefined {
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return this._value;
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}
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}
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