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async-chunked-array

v1.1.0

Published

Helpers for performing asynchronous operations on large arrays

Downloads

10

Readme

async-chunked-array

Build Status NPM version

Helper for performing asynchronous operations on arrays. This module is intended to allow CPU intensive array operations without blocking the event loop.

How to use

npm install --save async-chunked-array

Each method takes the following parameters:

  • collection - the array to operate on.
  • chunkLength - how many array items to operate on before breaking and allowing the event loop to become free.
  • operation - the function to run against the array / array items.
  • callback - runs when the current operation completes.

Example

const arrayHelper = require('async-chunked-array')

let longArray = [ ... some long array ... ]

arrayHelper.forEach(longArray, 1000, (item) => {
    // do something with item
}, (err) => {
    if (err) { throw err }
})

arrayHelper.map(longArray, 1000, (item) => {
    return item * 2
}, (err, results) => {
    if (err) { throw err }

    // results is the transformed array
})

arrayHelper.sort(longArray, 1000, (a, b) => {
    return a < b ? -1 : 1
}, (err, sorted) => {
    if (err) { throw err }

    // sorted is the sorted array
})