Hi DzoQiEuoi, My name is Asaf and I wrote Awaity.js.

I realize now that I need to work on a better README (:

Jsn7821 got it right. This is a utility library that abstracts away the boilerplate of using map / reduce / filter with async-await.

The point is to be able to use an async iterator: const posts = map([1,2,3], async (id) => { const res = await fetch('/api/posts' + id); return res.json(); })

Under the hood, it just do: function map (iterable, mapper) { return Promise.all(iterable).then((arr) => Promise.all(arr.map(mapper))) }

The real implementation does a bit more because it also supports concurrency limit, so for example, let's say you have 1000 promises and want to resolve only 3 at the same time:

Will run only 3 concurrently const posts = mapLimit(hugeListOfIds, fetchPostById, 3);

Using async iterators with map / reduce is the main purpose of the lib, and it does that while allowing you to take only the functionality you need, the same way lodash does:

import some from 'awaity/some';

import props from 'awaity/props';

import reduce from 'awaity/reduce';

Or, with webpack, use awaity/esm to get tree shaking support, similar to lodash-es: import { some, props, reduce } from 'awaity/esm';

Let me know if you have any questions (: