44 lines
1.5 KiB
TypeScript
44 lines
1.5 KiB
TypeScript
//// [awaitUnionPromise.ts]
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// https://github.com/Microsoft/TypeScript/issues/18186
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class AsyncEnumeratorDone { };
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interface IAsyncEnumerator<T> {
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next1(): Promise<T | AsyncEnumeratorDone>;
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next2(): Promise<T> | Promise<AsyncEnumeratorDone>;
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next3(): Promise<T | {}>;
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next4(): Promise<T | { x: string }>;
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}
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async function main() {
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const x: IAsyncEnumerator<number> = null;
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let a = await x.next1();
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let b = await x.next2();
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let c = await x.next3();
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let d = await x.next4();
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}
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//// [awaitUnionPromise.js]
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// https://github.com/Microsoft/TypeScript/issues/18186
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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return new (P || (P = Promise))(function (resolve, reject) {
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
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function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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});
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};
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class AsyncEnumeratorDone {
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}
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;
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function main() {
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return __awaiter(this, void 0, void 0, function* () {
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const x = null;
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let a = yield x.next1();
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let b = yield x.next2();
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let c = yield x.next3();
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let d = yield x.next4();
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});
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}
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