promise.reduce

"Returns a promise containing the reduced result from the provided function"

Install

$ npm install promise.reduce --save

Usage

var map = require('promise.reduce')
var conat = (total, current) => Promise.resolve(total + current)

reduce([
  'a',
  'b',
  Promise.resolve('c')
], concat).then((result) => {
  console.log(result) // 'abc'
})

API

reduce(input..., reducerFn, initialValue) -> promise

Returns a promise containing the reduced result of the promisified mappingFn on its elements. Rejection occurs if any supplied promises reject.

input Iterable<Promise|any>

A sequence of promises or instanceof Iterable

mapperFn Function

A mapping function that returns a promise

initialValue Function

The initial value used in the reduction invocation