55 lines
1.6 KiB
TypeScript
55 lines
1.6 KiB
TypeScript
// (C) Copyright 2015 Moodle Pty Ltd.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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* Base class to use for implementing custom Promises.
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*/
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export abstract class CorePromise<T = unknown> implements Promise<T> {
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protected nativePromise: Promise<T>;
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constructor(nativePromise: Promise<T>) {
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this.nativePromise = nativePromise;
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}
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[Symbol.toStringTag]!: string;
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/**
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* @inheritdoc
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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: Error) => TResult2 | PromiseLike<TResult2>) | undefined | null,
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): Promise<TResult1 | TResult2> {
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return this.nativePromise.then(onFulfilled, onRejected);
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}
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/**
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* @inheritdoc
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*/
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catch<TResult = never>(
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onRejected?: ((reason: Error) => TResult | PromiseLike<TResult>) | undefined | null,
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): Promise<T | TResult> {
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return this.nativePromise.catch(onRejected);
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}
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/**
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* @inheritdoc
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*/
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finally(onFinally?: (() => void) | null): Promise<T> {
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return this.nativePromise.finally(onFinally);
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}
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}
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