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@hypercolor/promise-queue

v0.0.8

Published

Used by the Hypercolor Digital team to support concurrent looping over an array. Supports a concurrency count to control how many promises may be resolved at once

Downloads

433

Readme

Hypercolor Promise Queue

Table of Contents

Introduction

This tool is used by the team at Hypercolor Digital to loop through a list of promises and execute them in a queue. This is useful for when you have a list of promises that you want to execute in a specific order, but you don't want to wait for the previous promise to resolve before executing the next one. Additionally, this tool allows you to set a maximum number of concurrent promises that can be executed at any given time.

Installation

  • NPM
    • npm i @hypercolor/promise-queue
  • Yarn
    • yarn add @hypercolor/promise-queue

Usage

Example:

import { PromiseQueue } from '@hypercolor/promise-queue';

const exampleFunction = async (array: any[]) => {
    /*
    Loop through the array and execute a promise for each item.
    Accepts argument for maxConcurrent Promises to process.
    */
  
    //Void Returning Example:
    await new PromiseQueue(1).runall(array.map((item, index) => async () => {
        //do something with the item
        await doSomething(item);
        console.log("Processed item " + index + 1 + ' of ' + array.length + ' items.);
    }));
    
    // Return Array of Processed Items:
    const results = await new PromiseQueue(1).runall(array.map((item, index) => async () => {
        //do something with the item
        const result = doSomethingAndReturnResult(item);
        console.log("Processed item " + index + 1 + ' of ' + array.length + ' items.);
        return result;
    }));
};

More Information

Toolchain

  • TypeScript
  • p-Queue

[Project Repository](https://github.com/hypercolor/promise-queue

Organization Repository