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p-any

Wait for any promise to be fulfilled

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What is p-any?

The p-any package is a utility for handling multiple promises in JavaScript. It returns a promise that is fulfilled when any of the input promises are fulfilled, or rejected if all of the input promises are rejected.

What are p-any's main functionalities?

Basic Usage

This feature demonstrates the basic usage of p-any. It takes an array of promises and returns a promise that resolves as soon as the first promise in the array resolves.

const pAny = require('p-any');
const promise1 = Promise.resolve('First');
const promise2 = new Promise((resolve) => setTimeout(resolve, 100, 'Second'));
const promise3 = new Promise((resolve, reject) => setTimeout(reject, 50, 'Third'));

pAny([promise1, promise2, promise3]).then(value => {
  console.log(value); // 'First'
});

Handling Rejections

This feature demonstrates how p-any handles rejections. If all input promises are rejected, p-any returns an AggregateError.

const pAny = require('p-any');
const promise1 = new Promise((resolve, reject) => setTimeout(reject, 100, 'First'));
const promise2 = new Promise((resolve, reject) => setTimeout(reject, 200, 'Second'));
const promise3 = new Promise((resolve, reject) => setTimeout(reject, 300, 'Third'));

pAny([promise1, promise2, promise3]).catch(error => {
  console.log(error); // AggregateError: All promises were rejected
});

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Package last updated on 31 May 2021

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