async-promise-loop v1.0.1

async-promise-loop

A Node.js Promise-based asynchronous loop.

Introduction

Lots of times I found myself doing DataBase request for every element of an array, maybe searching info for some IDs, or getting more data for many objects.

So, i created this. It allows to apply a Promise to every element of an array no matter if it is asynchronous or not.

Usage

First, install the package using npm:

npm install async-promise-loop --save

Then, require the package and use it like so:

If you don't understand arrow functions, go to the next example

const asyncLoop = require('./async-promise-loop/index');

//Asynchronous promise to apply to each element of the array
const asyncPromise = (elem) => new Promise((resolve) => {
    setTimeout(() => {
        console.log(elem, ": I am resolving");
        return resolve();
    }, 1000);
});

//Loop using the "asyncPromise"
asyncLoop([1, 2, 3], asyncPromise)
    .then((array) => {
        console.log("I finished looping through this:", array);
    });

This is the next example

const asyncLoop = require('./async-promise-loop/index');

//Asynchronous promise to apply to each element of the array
function asyncPromise(elem) {
    return new Promise(function (resolve) {
        setTimeout(function() {
            console.log(elem, ": I am resolving");
            return resolve();
        }, 1000);
    });
}

//Loop using the "asyncPromise"
asyncLoop([1, 2, 3], asyncPromise)
    .then(function (array) {
        console.log("I finished looping through this:", array);
    });

License

ISC