is IE10–11 not edge

[Mouvedia]

// opt in IE (even 11)
'ActiveXObject' in self &&
// https://bugs.chromium.org/p/chromium/issues/detail?id=364512
self.navigator.msPointerEnabled

NB: web worker compatible

[Mouvedia]

cross-browser version

// exclude old versions of Opera that supported ActiveXObject
self.hasOwnProperty &&
// doesn't throw on IE5
self.hasOwnProperty('ActiveXObject') &&
// readonly on IE
self.navigator.msPointerEnabled