chanel/lib/index.js

Channel-based control-flow for parallel tasks with concurrency control

var describe = require('to-descriptor')

var Channel = require('./proto')
var proto = describe(require('events').EventEmitter.prototype)
describe(Channel.prototype, proto)

module.exports = channel

function channel(options) {
  Object.defineProperties(read, proto)
  Channel.call(read, options)
  read.pushed = read.pushed.bind(read)

  return read

  function read(done) {
    if (done === true) {
      var thunk = read._flush()
      return arguments.length === 2
        ? thunk(arguments[1])
        : thunk
    }
    if (typeof done === 'function') return read._read(done)
    throw new TypeError('not a function')
  }
}