Which library is better for cross-browser compatibility?

Question

JavaScript

I think everyone knows that there are a bunch of JavaScript functions that either do not exist at all in older browsers, and some have a different name. There are still a lot of pitfalls. Is there any library (with polyfills, for example), by connecting which, you could just forget that the woman Luda from the next entrance in IE3 will not have something to work with?
Thank you all for your reply.

Answer 1

https://polyfill.io/v2/docs/ automatically provides only those polyfills that a given browser needs. You can also specify specifically which APIs are needed. Pluses: connected for IE through conditional comments and forgot. Cons: in IE an extra http request (although it's still not noticeable on this brake booster).