/
promise.ts
39 lines (35 loc) · 1.02 KB
/
promise.ts
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/*
* Copyright The OpenTelemetry Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
export class Deferred<T> {
private _promise: Promise<T>;
private _resolve!: (val: T) => void;
private _reject!: (error: unknown) => void;
constructor() {
this._promise = new Promise((resolve, reject) => {
this._resolve = resolve;
this._reject = reject;
});
}
get promise() {
return this._promise;
}
resolve(val: T) {
this._resolve(val);
}
reject(err: unknown) {
this._reject(err);
}
}