Incompatibilities with IE 10 and 11 on Windows 8 and 8.1

[leehart]

• Microsoft Windows 8.1
  • Microsoft Internet Explorer v11 (released 2013-10-17) (known to fail, 'Uint8ClampedArray' is undefined)
• Microsoft Windows 8
  • Microsoft Internet Explorer v10 (released 2012-10-26) (known to fail, 'Uint8ClampedArray' is undefined)

[leehart]

Still true (on master, 22 Dec 2016)

[leehart]

Some might say "we don't support any browsers that don't support Uint8ClampedArray"
mapbox/mapbox-gl-js#2444

But there might be workarounds:
https://gist.github.com/gengkev/2295355
https://github.com/substack/typedarray

I gather that an updated version of IE v11 should be OK, via https://support.microsoft.com/en-us/kb/2929437

If we don't support IE v10, it's worth noting that IE v11 is not available on Windows 8, only Windows 7 and 8.1.

To complicate matters "There are several differences between Internet Explorer 11 on Windows 8.1 and IE11 on Windows 7"
https://msdn.microsoft.com/en-us/library/dn394063(v=vs.85).aspx

Without a polyfill, if we add feature detection to the sniffing, then I think IE v11 should get the green light.
http://caniuse.com/#search=Uint8ClampedArray

Support for Windows 8, and hence IE v10, has also officially ended, over a year ago...
"Windows 8.0 support ended January 12, 2016. To receive continued support, users must upgrade to Windows 8.1."
http://www.allyncs.com/docs/lifecyclesupport.html
https://www.microsoft.com/en-gb/WindowsForBusiness/End-of-IE-support

[leehart]

IE v11 is compatible (on Windows 8 and 8.1) when properly updated (security patched, KB2929437).

IE v10 is not compatible, and is below our minimum support threshold.

[leehart]

To investigate workarounds for increased compatibility.

[benjeffery]

I've fixed a few IE11 issues. I think we can leave IE10 to rot...