pull-async

create source pull-stream from async callback (more specifically, a continuable)

npm install --save pull-async

if you want to resolve multiple values, use pull-defer.

example

const pull = require('pull-stream')
const xhr = require('xhr')
 
pull(
  pullAsync((cb) => {
    xhr.get('/things', cb)
  }),
  pull.log()
)
// [{...}, {...}, {...}, ...]

usage

pullAsync = require('pull-async')

source = pullAsync(continuable)

a continuable is a function that takes in a single argument: an error-first callback.

returns a source stream that will resolve the continuable into a single error or value, then end the stream.

source

function pullAsync (continuable) {
  var done
  return function (abort, cb) {
    if (abort) return cb(abort)
    if (done) return cb(true)
    continuable(function (err, data) {
      done = true
      cb(err, data)
    })
  }
}

license

The Apache License

Copyright © 2016 Michael Williams

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.