Re:The new Microsoft Edge is out of preview
by tracker1 on Thursday January 16, 2020 @04:53PM
(#22069406)
Agreed, but I'd just assume avoid dual builds and targets at this point... a project I'm working on started with IE11 support and dual build targets, but broke in IE11 about 3 weeks in, so changed the "legacy" build mode to a page noting the requirement for a modern and secure browser.
Not to mention all the issues you'll have if you try to use CSS Flex or Grid.
Support IE11 only if you absolutely must, is my advice, and do that with differential serving: https://philipwalton.com/articles/deploying-es2015-code-in-p...
https://calendar.perfplanet.com/2018/doing-differential-serv...