isObject bench

bench.js

'use strict';

function log(message) {
  document.getElementById('status').textContent += message + '\n';
}
log('running...');

const tests = [
  null, undefined, 0, 1, true, false, '', 'adsfasf', new String('test'), {}, Object.create(null), Object.prototype, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {},
  null, undefined, 0, 1, true, false, '', 'adsfasf', new String('test'), {}, Object.create(null), Object.prototype, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {},
  null, undefined, 0, 1, true, false, '', 'adsfasf', new String('test'), {}, Object.create(null), Object.prototype, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {},
  null, undefined, 0, 1, true, false, '', 'adsfasf', new String('test'), {}, Object.create(null), Object.prototype, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {},
  null, undefined, 0, 1, true, false, '', 'adsfasf', new String('test'), {}, Object.create(null), Object.prototype, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {},
  null, undefined, 0, 1, true, false, '', 'adsfasf', new String('test'), {}, Object.create(null), Object.prototype, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {},
  null, undefined, 0, 1, true, false, '', 'adsfasf', new String('test'), {}, Object.create(null), Object.prototype, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {},
  null, undefined, 0, 1, true, false, '', 'adsfasf', new String('test'), {}, Object.create(null), Object.prototype, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {},
  null, undefined, 0, 1, true, false, '', 'adsfasf', new String('test'), {}, Object.create(null), Object.prototype, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {},
  null, undefined, 0, 1, true, false, '', 'adsfasf', new String('test'), {}, Object.create(null), Object.prototype, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {}, function() {},
];

// add tests
const suite = new Benchmark.Suite;
suite.add('strict', function() {
  function isObject(val) {
    return val !== null && (typeof val === 'function' || typeof val === 'object');
  }
  let i = tests.length;
  while (i--) {
    isObject(tests[i]);
  }
})
.add('loose', function() {
  function isObject(val) {
    return val && (typeof val === 'function' || typeof val === 'object');
  }
  let i = tests.length;
  while (i--) {
    isObject(tests[i]);
  }
})
.add('underscore', function() {
  function isObject(val) {
    var type = typeof obj;
    return type === 'function' || type === 'object' && !!obj;
  }
  let i = tests.length;
  while (i--) {
    isObject(tests[i]);
  }
})
// add listeners
.on('cycle', function(event) {
  log(String(event.target));
})
.on('complete', function() {
  log('Fastest is: ' + this.filter('fastest').map('name'));
})
// run async
.run({ 'async': true });

index.html

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>GistRun</title>
</head>
<body>
  <pre><code id="status"></code></pre>
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  <script src="bench.js"></script>
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