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October 23, 2019 19:53
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Save tdreyno/873d58661361f8f02afa1ce088f62523 to your computer and use it in GitHub Desktop.
It's like map, but you get the whole list.
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| interface Array<T> { | |
| andThen: <U>(this: T[], fn: (items: T[]) => U) => U; | |
| } | |
| Array.prototype.andThen = function<T, U>(this: T[], fn: (items: T[]) => U): U { | |
| return fn(this); | |
| }; |
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| const users = await ["userid1", "userid2"].map(fetch).andThen(Promise.all); |
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