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I think it makes sense to formally drop the IE dependency in versions sooner than when you’re making changes that actually break IE.

Besides, replacing jquery May indeed be why they chose to drop IE right now. One of the biggest selling points of jquery, and one of the biggest contributors to its heaviness, is cross browser support including IE.

As one of the comments in the linked issue points out, dropping IE11 means they can also start using basic JS constructs, like Array.prototype.forEach.



> As one of the comments in the linked issue points out, dropping IE11 means they can also start using basic JS constructs, like Array.prototype.forEach.

Array.prototype.forEach is supported from IE9.

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

EDIT: It is the nodelist api that isn't supported in IE. Not Array.prototype.forEach.

Quite a lot of these basic JS constructs even if they are missing (most aren't in IE11) are very easily polyfilled.

Personally I think it is fine that they drop support if they don't feel the need to support it. Bootstrap 4 isn't going to vanish.


And if you can polyfill, that is good way to drop support for ie11. Personally instead of support ie11 out of the box, have have create custom build or expect them to do polyfilling themselves. This way they can optimize for the remaining browsers.




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