A simple and convenient function that resolves promises in data structures like arrays, objects, Maps, and Sets

Mux is a function that multiplexes promises in nested data structures and resolves them like this:

await mux({ a: asyncFunction1(), b: asyncFunction2(), }); // Result: { a: result1, b: result2, }

yarn add @expo/mux

And import it like this:

import mux from '@expo/mux';

You can also pass in deeply nested data structures like this:

await mux({ a: { b: asyncFunction1(), }, }); // Result: { a: { b: result1, }, }

Mux supports several standard JavaScript data structures:

await mux(new Set([ asyncFunction1(), asyncFunction2(), ])); // Result: new Set([ result1, result2, ])

And if your promises themselves result in data structures, mux will recurse into them and resolve the nested promises.

await mux([ Promise.resolve({ a: asyncFunction1(), }), ]); // Result: [ { a: result1, }, ]

Check out the test suite for even more examples.

If you've discovered a particularly interesting way to use mux, add it here and send a PR to share it.