gistfile1.js

window._eventLog = (function(longTime, important) {
	var eventLog = [];
	eventLog.getLongEvents = function(time) {
			time = time === undefined ? longTime : time;
			return this.filter(function(el) {
				return el.time > time;
			})
		}

	// Should we filter mousemove?
	Object.getOwnPropertyNames(window).filter(str => str.startsWith('on')).map(str => str.replace('on', '')).forEach(function(eventName) {
		var timeMeasured = new WeakMap();

		window.addEventListener(eventName, function(e) {
			timeMeasured.set(e, window.performance.now());
		}, true);

		window.addEventListener(eventName, function(event) {
				var time = (window.performance.now() - timeMeasured.get(event));
				var elementString = event.target &&
							event.target.nodeName
							&&
							event.target.nodeName +
								(event.target.id ? '#' + event.target.id : '' ) +
								(event.target.getAttribute && event.target.getAttribute('class') ? 
									'.' + event.target.getAttribute('class').split(' ').map(str => str.trim()).filter(Boolean).join('.') 
									: '' );
				var ret = {
					name: eventName,
					time: time,
					element: elementString,
					eventData: null
				};
				if (time > longTime || (important && important(ret, event)))
					ret.eventData = event;
				timeMeasured.delete(event);
				eventLog.push(ret);

		}, false);

	});
	return eventLog;
}(16));