How to Fetch IMEI using ADBKIT in node.js

var adb = require('adbkit');
var client = adb.createClient();
var Promise = require('bluebird');
var readline = require('readline');
 
client.listDevices()
	.then(function(devices) {
		return Promise.map(devices, function(device) {
			console.log('Device %s ', device.id)
			client.shell(device.id, "dumpsys iphonesubinfo", function(err, output) {
			if (err) {
			    console.log(err);
			  }
				var readStream = output;

readStream
  .on('data',  function (data) { 
	console.log('Data!', data.toString());  
		var lines = data.toString().split('n').length - 1;
  		console.log(lines);

		
	})
  .on('error', function (err)  { console.error('Error', err); })
  .on('end',   function ()     { console.log('All done!');    });

			
		})
	})
.catch(function(err) {
	console.log('No device detected!')
	console.error('Something went wrong:', err.stack)
})