Test for passive support

[knynkwl]

trafficstars

Shouldn't passive support be added to the scroll addEventListener?

var browserSupportsPassive = false;
if (isInBrowser) {
	try {
		var opts = Object.defineProperty({}, 'passive', {
			get: function() {
				browserSupportsPassive = true;
			}
		});
		window.addEventListener('test', null, opts);
	} catch (e) {}
}
const useCapture = browserSupportsPassive ? {capture: false, passive: true} : false;

[stutrek]

Yes, a PR adding it would be accepted.

[jayalfredprufrock]

I'm pretty sure the scroll event is passive by default