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await 需要结合 async 使用,但文档中这一块并没有使用 async。
或许对于知道 await / async 的同学没有理解难度,但对于 es6+ 不熟悉的同学可能存在隐性的坑。
该 PR 补足了使用 await 的语句所需要的 async 函数。