text: var fs = require('fs');
  
  
  //For calculating execution time
  var date1 = new Date();
  var time_start = date1.getTime();
  console.log("starting at: " + time_start);
  console.log("Let's start reading file");
  
  
  //Name of the file to be read
  var filename = 'output.txt'; 
  //Reading file asynchronously
  fs.readFile('output.txt', (err, data) => {
  	if (err) 
  		throw err;
  		
  	console.log("Content :  " + data);
  });
  
  
  //For calculating execution time
  var date2 = new Date();
  var time_end = date2.getTime();
  console.log("finishing at: " + time_end);
  var execution_time = time_end - time_start;
  console.log("Time for execution: " + execution_time );
  //Consider it some another task in queue
  console.log('Another task to be executed');