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Why is IE11 support still important now? I can't find exact stats on it, but it seems <2%. Surely projects which still want to support IE11 could still stick for a while with Vue2.

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IE11 is still heavily used in some industries, such as healthcare. Browser statistics services usually don't pick up on a lot of IE11 use because it's on internal networks.

I wish I could ignore IE11, but the reality is that I can't.

Thanks for sharing

IE11 is also frequently represented as `mshtml.dll` in windows programs that embed a browser (eg: https://en.wikipedia.org/wiki/Trident_(software)#Use_cases )

The point is that Vue 2 can continue to be used though. There's no need to upgrade.

I was surprised that became a feature of Vue 3, as well. I was hoping they would drop it, assuming you could just use Babel + Polyfills to get it to work if you really needed it.

Because vue3 depends on proxies which can't be polyfilled.

They need to add the vue2 logic for reactivity. And use polyfill for any other advance features

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