jalbam · November 27, 2022 06:27
diff --git a/performance.now-polyfill.js b/performance.now-polyfill.js
 'use strict';

 // @license https://opensource.org/licenses/MIT
 // copyright Paul Irish 2015
 // Added code by Aaron Levine from: https://gist.github.com/Aldlevine/3f716f447322edbb3671
 // Some modifications by Joan Alba Maldonado.
 // as Safari 6 doesn't have support for NavigationTiming, we use a Date.now() timestamp for relative values
 // if you want values similar to what you'd get with real perf.now, place this towards the head of the page
 // but in reality, you're just getting the delta between now() calls, so it's not terribly important where it's placed
 // Gist: https://gist.github.com/jalbam/cc805ac3cfe14004ecdf323159ecf40e
 // TODO: Think about adding vendor prefixes.
 if (!Date.now) { Date.now = function() { return new Date().getTime(); } }
 (function()
 {
 	if (window.performance && window.performance.now) { return; }

 	window.performance = window.performance || {};

 	if
 	(
 		window.performance.timing && window.performance.timing.navigationStart &&
 		window.performance.mark &&
 		window.performance.clearMarks &&
 		window.performance.getEntriesByName
 	)
 	{
 		window.performance.now = function()
 		{
 			window.performance.clearMarks('__PERFORMANCE_NOW__');
 			window.performance.mark('__PERFORMANCE_NOW__');
 			return window.performance.getEntriesByName('__PERFORMANCE_NOW__')[0].startTime;
 		};
 	}
 	else if ("now" in window.performance === false)
 	{
 		var nowOffset = Date.now();

 		if (window.performance.timing && window.performance.timing.navigationStart)
 		{
 			nowOffset = window.performance.timing.navigationStart
 		}

 		window.performance.now = function now()
 		{
 			return Date.now() - nowOffset;
 		}
 	}
 })();
	'use strict';

	// @license https://opensource.org/licenses/MIT
	// copyright Paul Irish 2015
	// Added code by Aaron Levine from: https://gist.github.com/Aldlevine/3f716f447322edbb3671
	// Some modifications by Joan Alba Maldonado.
	// as Safari 6 doesn't have support for NavigationTiming, we use a Date.now() timestamp for relative values
	// if you want values similar to what you'd get with real perf.now, place this towards the head of the page
	// but in reality, you're just getting the delta between now() calls, so it's not terribly important where it's placed
	// Gist: https://gist.github.com/jalbam/cc805ac3cfe14004ecdf323159ecf40e
	// TODO: Think about adding vendor prefixes.
	if (!Date.now) { Date.now = function() { return new Date().getTime(); } }
	(function()
	{
	if (window.performance && window.performance.now) { return; }

	window.performance = window.performance \|\| {};

	if
	(
	window.performance.timing && window.performance.timing.navigationStart &&
	window.performance.mark &&
	window.performance.clearMarks &&
	window.performance.getEntriesByName
	)
	{
	window.performance.now = function()
	{
	window.performance.clearMarks('__PERFORMANCE_NOW__');
	window.performance.mark('__PERFORMANCE_NOW__');
	return window.performance.getEntriesByName('__PERFORMANCE_NOW__')[0].startTime;
	};
	}
	else if ("now" in window.performance === false)
	{
	var nowOffset = Date.now();

	if (window.performance.timing && window.performance.timing.navigationStart)
	{
	nowOffset = window.performance.timing.navigationStart
	}

	window.performance.now = function now()
	{
	return Date.now() - nowOffset;
	}
	}
	})();