typedef js.html.KeyboardEventInit

var which:Null<Int>

var view:Null<Window>

var shiftKey:Null<Bool>

var repeat:Null<Bool>

var metaKey:Null<Bool>

var location:Null<Int>

var keyCode:Null<Int>

var key:Null<String>

var isComposing:Null<Bool>

var detail:Null<Int>

var ctrlKey:Null<Bool>

var code:Null<String>

var charCode:Null<Int>

var cancelable:Null<Bool>

var bubbles:Null<Bool>

var altKey:Null<Bool>