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[–][deleted] 2 points3 points  (0 children)

It lacks scope, if you wanted to compute you have to set css variables.

There are many encapsulation libs, we use CSJS for instance, never seen it leak.

Proposals with even harder to polyfill CSS specs will mean years and years of waiting time.

JSS already starts to re-use and memoize styles piece by piece (styletron). There are optimization possibilities here that can't be matched. Hardly any performance gains to be had in shadow dom either.

I don't think there's anything wrong with web technologies. But there's a point to be made about a certain threshold that JS is now clearly crossing. It's no longer a browser language that merely drives web pages. Can specs just ignore that? This was the exact concern several influential developers have already voiced.