复制
1async function* range(start, end) {
2	for (let i = start; i <= end; i++) {
3		yield Promise.resolve(i);
4	}
5}
6
7(async () => {
8	const gen = range(1, 3);
9	for await (const item of gen) {
10		console.log(item);
11	}
12})();