Function returnSteps

examples/io/streams/modules/streams.js:399–413

()

		const internal = ReadableStreamAsyncIteratorBrand.get(this);
		const reader = internal.reader;
		const returnSteps = () => {
			if (internal.isFinished) {
				return Promise.resolve({ value, done: true });
			}
			internal.isFinished = true;
			assert(reader.stream !== undefined);
			assert(reader.readRequests.length === 0);
			if (internal.preventCancel === false) {
			  const result = ReadableStreamReaderGenericCancel(reader, value);
			  ReadableStreamDefaultReaderRelease(reader);
			  return result;
			}
			ReadableStreamDefaultReaderRelease(reader);
			return Promise.resolve(undefined);
		};
		const returnPromise = internal.ongoingPromise
			? internal.ongoingPromise.then(returnSteps, returnSteps)
			: returnSteps();