create a sink stream, and start it later


return a pull-stream sink, that won't start reading until you say.

var delayed = require('pull-delayed-sink')
var feed = [], d
//create a pull stream, and direct to nowhere yet! 
pull(pull.values(feed), d = delayed())
//... later, start the sink. 
setTimeout(function () {
  feed.push(1, 2, 3)
  l.start(pull.collect(function (errary) {
    if(err) throw err
    t.deepEqual(ary, [1, 2, 3])

pull.defer is a similar function, but it's a source instead of a sink.

create a fake sink stream, and then start it when you have the sink you want.

make a sink delay, and then allow it to start.