[17:59:14] <bethge> https://github.com/jquery/PEP/blob/master/src/mouse.js#L67 polyfills MouseEvent.buttons. It feels odd to polyfill properties of other input types. Safari currently does not support MouseEvent.buttons. Chrome shipped it in 43 in June.
[18:35:44] <scott_gonzalez> bethge: What do you mean by polyfilling properties of other input types?