Quick and dirty timings libary, most definitely should not be used for engineering, medical, safety related usages.

Timings.js

/*
  Requires Underscore

  Basic Usage:
  var Timing = require('Timing');
  Timing.start('myLabel');
  Timing.stop('myLabel');
  Timing.getTime('myLabel');

  Dump raw time marks to console:
  Timing.dump();

  Dump calculated time w/ label to console:
  Timing.calculatedDump();
 */

var timingTable = {};

function Timings() {

}

Timings.prototype.clear = function(name) {
  delete timingTable[name];
};

Timings.prototype.start = function(name) {
  // console.log(name);
  timingTable[name] = {};
  timingTable[name].start = Date.now();
};

Timings.prototype.stop = function(name) {
  timingTable[name].stop = Date.now();
  if (!timingTable[name] && !timingTable[name].start) {
    return null;
  } else {
    return (timingTable[name].stop - timingTable[name].start);
  }
};

Timings.prototype.dump = function() {
    console.log(timingTable);
  };

Timings.prototype.calculatedDumps = function() {
  _.each(timingTable, function(value, key) {
    var temp = key + ': ' + (timingTable[key].stop - timingTable[key].start);
    console.log(temp);
  });
};

Timings.prototype.getTime = function(name) {
  if (!timingTable[name] && !timingTable[name].start) {
    return null;
  }
  if (timingTable[name].stop) {
    return (timingTable[name].stop - timingTable[name].start);
  } else {
    return (Date.now() - timingTable[name].start);
  }
};

var timing = new Timings();
module.exports = timing;