71 lines
2.1 KiB
JavaScript
71 lines
2.1 KiB
JavaScript
"use strict";
|
|
/**
|
|
* Copyright 2022 Google LLC.
|
|
* Copyright (c) Microsoft Corporation.
|
|
*
|
|
* 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
|
|
*
|
|
* http://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.
|
|
*/
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.Deferred = void 0;
|
|
class Deferred {
|
|
#isFinished = false;
|
|
#promise;
|
|
#result;
|
|
#resolve;
|
|
#reject;
|
|
get isFinished() {
|
|
return this.#isFinished;
|
|
}
|
|
get result() {
|
|
if (!this.#isFinished) {
|
|
throw new Error('Deferred is not finished yet');
|
|
}
|
|
return this.#result;
|
|
}
|
|
constructor() {
|
|
this.#promise = new Promise((resolve, reject) => {
|
|
this.#resolve = resolve;
|
|
this.#reject = reject;
|
|
});
|
|
// Needed to avoid `Uncaught (in promise)`. The promises returned by `then`
|
|
// and `catch` will be rejected anyway.
|
|
this.#promise.catch((_error) => {
|
|
// Intentionally empty.
|
|
});
|
|
}
|
|
then(onFulfilled, onRejected) {
|
|
return this.#promise.then(onFulfilled, onRejected);
|
|
}
|
|
catch(onRejected) {
|
|
return this.#promise.catch(onRejected);
|
|
}
|
|
resolve(value) {
|
|
this.#result = value;
|
|
if (!this.#isFinished) {
|
|
this.#isFinished = true;
|
|
this.#resolve(value);
|
|
}
|
|
}
|
|
reject(reason) {
|
|
if (!this.#isFinished) {
|
|
this.#isFinished = true;
|
|
this.#reject(reason);
|
|
}
|
|
}
|
|
finally(onFinally) {
|
|
return this.#promise.finally(onFinally);
|
|
}
|
|
[Symbol.toStringTag] = 'Promise';
|
|
}
|
|
exports.Deferred = Deferred;
|
|
//# sourceMappingURL=Deferred.js.map
|