js snippet for checking node module performance

performance.js

var execute = function(src, times) {
  var times = times || 10;
  var code = require(src);
  var results = [];

  for(var i = 0; i < times; i++) {
    var result = {};
    result.iteration = i;
    var startTime = new Date().getTime();

    code();

    var endTime = new Date().getTime();
    result.time = endTime - startTime;
    results.push(result);
  }


  var result_length = results.length;
  var total_length = 0;
  for(var i = 0; i < result_length; i++) {
    total_length += results[i].time;
  }

  var average = total_length / result_length;
  console.log("Average execute time", average);

  var final_results = {
    timestamp: new Date().getTime(),
    average: average,
    results: results
  };

  console.log("final_results", final_results);

};

// TODO: fix hardcoded order in arguments
var file_argument = process.argv[2];
var file = file_argument.split("=")[1];

var times_argument = process.argv[3];
if(times_argument) {
  var times = times_argument.split("=")[1];
}

execute(file, times);


// How to use:
//
// node performance.js --file=./yourfile.js [--times=50]

// TODO:
// Fix hardcoded argument order
// Save memory usage per iteration
// Save result to json file
// Serve said json to some chart library
// Create grunt/gulp plugins?