promise2stream

    1.0.1 • Public • Published

    promise2stream npmjs.com The MIT License npm downloads

    Transform ES2015 Promise to Stream - specifically, Transform Stream using through2. Works in object mode by default, but you can pass options directly to the through2 package.

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    Install

    npm i promise2stream --save
    

    Usage

    For more use-cases see the tests

    const promise2stream = require('promise2stream')

    promise2stream

    Transform a Promise val to transform stream.

    Params

    • val {Promise}: Some promise.
    • opts {Object}: Options passed directly to through2.
    • returns {Stream}

    Example

    var promise2stream = require('promise2stream')
    var promise = Promise.resolve(123)
     
    var stream = promise2stream(promise)
    stream
      .on('data', function (val) {
        console.log(val) // => 123
      })
      .once('error', console.error)
      .once('end', function () {
        console.log('end')
      })
     
    // or access the promise
    stream.promise.then(function (val) {
      console.log(val) // => 123
    }, console.error)
     
    // rejected promise fires `error` event
    var rejectedPromise = Promise.reject(new Error('foo err'))
    var stream = promise2stream(rejectedPromise)
     
    stream.once('error', function (err) {
      console.log(err) // => [Error: foo err]
    })

    Related

    Contributing

    Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.
    But before doing anything, please read the CONTRIBUTING.md guidelines.

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    Install

    npm i promise2stream

    DownloadsWeekly Downloads

    1

    Version

    1.0.1

    License

    MIT

    Last publish

    Collaborators

    • vanchoy
    • tunnckocore