text: var Benchmark = require('benchmark');
  
  var suite = new Benchmark.Suite;
  
  const objSet = require('../util/objSet')
  
  const _getType = obj => typeof obj
  
  const _getInst = (obj, proto) =>  obj instanceof proto;
  
  const _getProto = obj => Object.prototype.toString.call(obj).slice(8,-1)
  
  // add tests
  suite.add('typeof', function() {
      let result;
      for (let obj in objSet) {
          result = _getType(obj) == 'number';
      }
  })
  .add('instanceof', function() {
      let result;
      for (let obj in objSet) {
          result = _getInst(obj, Number);
      }
  })
  .add('Object.prototype', function() {
      for (let obj in objSet) {
          result = _getProto(obj) == 'Number';
      }
  })
  // add listeners
  .on('cycle', function(event) {
    console.log(String(event.target));
  })
  .on('complete', function() {
    console.log('Fastest is ' + this.filter('fastest').map('name'));
  })
  // run async
  .run({ 'async': true });
  