Website doesn't work in IE 11

[EmilRais]

I'm adding support for IE 11 in our web application and I found a small cosmetic issue with one of our menu buttons. I wanted to test it out from your demo page, but your website https://material.ui.com does not work at all in IE 11. It's simply white.

When I check the body in the DOM I only see a couple of script elements and a blank div.
Is this intentional?

[oliviertassinari]

@EmilRais See TehShrike/deepmerge#171.

[EmilRais]

Maybe it wasn't clear but I was reporting that your website does not work at all from IE 11, not that your library doesn't. I made the library work by adding the necessary polyfill - which I gather from the linked issue I can now remove again, which is great.

[oliviertassinari]

Thanks for the clarification.

[fchengpc]

still the same issue even update to 4.5.1. @oliviertassinari
@EmilRais what kind of polyfill did you add to get your website working?

[EmilRais]

Well the error I got was regarding Object.assign, so I simply added the corresponding polyfill from the polyfill library core-js:

import "core-js/features/object/assign";

I placed it at the top of my entrypoint file named index.tsx.

[oliviertassinari]

@EmilRais Wait Material-UI v4.5.2 or freeze deepmerge's version.

[fchengpc]

@oliviertassinari when is 4.5.2 to be released?

[oliviertassinari]

This evening