JS Async Map

Map array with async functions.

Features

• map array with async function
• map promise which resolves to array
• map in parallel
• map in serial with customized step

Installation

npm i -S asyncmap

Usage

map array with async func

const results = await map([1,2,3], async (value, index) => await someAsyncFunc(value, index))

map promise which resolves to array

const results = await map(Promise.resolve([1,2,3]), async (value, index) => await someAsyncFunc(value, index))

map one by one

In the above examples, promise are resolved in parallel. However, you can easily map them one by one.

// map(1) returns another map function which maps values one by one 
const results = await map(1)([1,2,3], async (value, index) => await someAsyncFunc(value, index))

map step by step

As you guess, map can receive not only 1 as the step param. You can give any positive number as step, so within the step, values are resolved in parallel, but steps are resolved one by one.

// map(step) returns another map function which maps value step by step in serial but in parallel within the each step
const results = await map(7)(_.range(100), async (value, index) => await someAsyncFunc(value, index))

License

MIT