promise-waterfall2

Runs an array of promises in series, each passing their results to the next promise in the array. support an initialization parameter

Install

$ npm install promise.waterfall2

Usage

var promiseWaterfall = require('promise.waterfall2')

function makeAdder (a) {
  return function (b) {
    b = b || 0
    return Promise.resolve(a + b)
  }
}

var addOne = makeAdder(1)

promiseWaterfall([
  addOne  // 1
  addOne, // 2
  addOne  // 3
])
.then(console.log)
.catch(console.error)

promiseWaterfall([
    addOne,
    addTwo
],5) // with initialization parameter
.then(console.log)
.catch(console.error)

API

promiseWaterfall(functions,[initialArgs]) -> promise

Runs the array of functions in series, waiting for each to resolve and passing each result to the next function in the array.

functions

Required Type: array[function]