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    promise-sequential
    DefinitelyTyped icon, indicating that this package has TypeScript declarations provided by the separate @types/promise-sequential package

    1.1.1 • Public • Published

    promise-sequential

    Simple like Promise.all(), but sequentially!

    NPM version

    Npm Downloads

    Installation

    npm install --save promise-sequential
    

    Usage

    const sequential = require('promise-sequential');
     
    const items = [
      () => new Promise( ... )
      () => new Promise( ... )
      () => new Promise( ... )
    ];
     
    sequential(items)
    .then(res => {
      // ...
    })
    .catch(err => {
      // ...
    })

    There is only one difference between Promise.all usage and promise-sequential usage: promise-sequential receive an Array of functions that each returns a promise.

    Each function brings three params:

    Name Description
    previousResponse The response of previous iteration
    responses All responses received at the time
    count The current count.

    More complex usage

     
    const sequential = require('promise-sequential');
    const array = [1,2,3,4,5];
     
    sequential(array.map((item) => {
      return function(previousResponse, responses, count) {
     
        return new Promise(resolve => {
          setTimeout(() => {
            resolve(item)
          }, 1000)
        })
     
      }
    }))
    .then(res => {
      // ...
    })
    .catch(err => {
      // ...
    })

    Install

    npm i promise-sequential

    DownloadsWeekly Downloads

    51,446

    Version

    1.1.1

    License

    MIT

    Last publish

    Collaborators

    • russiann