async-chunked-array

async-chunked-array

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
})