extended-promises

Extended API for working with a collection of promises.

Installation

npm install -save extended-promises

Then, in your code:

import 'extended-promises';

Ta-daa! Now you can use the library methods, you are amazing!

Methods

Promise.every

An equivalent of Promise.all.

• Params:
  • an array of promises
• Returns:
  • a fulfilled promise with a results array of the promises in the same order, if every promise was fulfilled
  • a rejected promise with the reason for the first rejected promise

Promise.some

• Params:
  • an array of promises
• Returns:
  • a fulfilled promise with an array that contains the result or null value of the promises in the same order, if at least one of the promises was fulfilled
  • a rejected promise, if all the promises were rejected

Promise.none

• Params:
  • an array of promises
• Returns:
  • a fulfilled promise with an array that contains reasons in the same order, if all the promises were rejected
  • a rejected promise, if at least one of the promises was fulfilled

Promise.first

• Params:
  • an array of promises
• Returns:
  • a fulfilled promise with the result of the first fulfilled promise
  • a rejected promise with an array of reasons, if all the promises were rejected

Promise.last

• Params:
  • an array of promises
• Returns:
  • a fulfilled promise with the result of the last fulfilled promise
  • a rejected promise with an array of reasons, if all the promises were rejected

Promise.filter

• Params:
  • an array of promises
  • a predicate function
• Returns:
  • a fulfilled promise with an array of filtered promises, if all the promises have been fulfilled
  • a rejected promise with the reason for the first rejected promise

Promise.map

• Params:
  • an array of promises
  • a transformation function
• Returns:
  • a fulfilled promise with an array of transformed promises, if all the promises have been fulfilled
  • a rejected promise with the reason for the first rejected promise

Promise.timeout

• Params:
  • the single promise or the array of promises to process
  • the timeout, in ms
• Returns:
  • a fulfilled promise with the result OR the rejection reason of the promise (promises)
  • a rejected promise, if the timeout completes first