Socket.io emit async

socket-io-emit-async.js

var io = require('socket.io-client')("http://localhost:3001")
var Promise = require("bluebird")
io.emitAsync = Promise.promisify(io.emit)

io.emitAsync("report", {
  "name": "thomas"
}).then(function(data){
  console.log(data)
}).catch(function(e){
  console.log(e.message)
})

take2.js

// this works if you return a truthy first-parameter callback("my error", data) 

var _ = require("underscore")
var io = require('socket.io-client')("http://localhost:3001")
var Promise = require("bluebird")

io.emitAsync = function(event, payload){
  return new Promise(function (resolve, reject) {
    return io.emit(event, payload, function(){
      var args = _.toArray(arguments)
      if(args[0]) return reject(new Error(args[0]))
      return resolve.apply(null, args)
    })
  })
}

io.emitAsync("report", {
  "name": "thomas"
}).then(function(data){
  console.log(data)
}).catch(function(e){
  console.log(e.message)
})