Uncaught Reference Error: WeakMap is not defined

[dethe]

Browser: Chrome for Android 32.
OS: Android 4.4.2, Nexus 7

PointerEvents.min.js (built from github repo on 2014-01-25) is throwing an exception, "Uncaught Reference Error: WeakMap is not defined". I've seen this in Chrome for Android, but I'm also getting reports from my upstream users that PointerEvents-based drag-and-drop isn't working on Windows 8 with either mouse or touch interfaces.

I'm seeing the same issue in PointerGestures.min.js built similarly.

I'm not receiving PointerEvents in Safari 7.01 (desktop) either, but not seeing an exception there, so not sure what is going on.

[dfreedm]

PointerEvents and PointerGestures depend on the WeakMap library.
Before b0dd7bd and googlearchive/PointerGestures@0cded24 grunt did not warn on missing that dependency, which I think is probably the problem here.

It may interest you to note that I do distribute PointerEvents in bower as pointerevents-polyfill. PointerGestures is not distributed this way, though if there's demand I can look into doing that.

[dethe]

Got it, thanks! Working now in Safari desktop, I will test on Android when I get home and ask my student to test on Windows 8.