readdirp/examples/node_modules/event-stream/test/merge.asynct.js

Recursive version of fs.readdir with streaming api.

var es = require('../')
  , it = require('it-is').style('colour')
  , d = require('ubelt')

exports.merge = function (t) {
  var odd = d.map(1, 3, 100, d.id) //array of multiples of 3 < 100
  var even = d.map(2, 4, 100, d.id) //array of multiples of 3 < 100

  var r1 = es.readArray(even)
  var r2 = es.readArray(odd)

  var writer = es.writeArray(function (err, array){
    if(err) throw err //unpossible
    it(array.sort()).deepEqual(even.concat(odd).sort())
    t.done() 
  })

  es.merge(r1, r2).pipe(writer)

}