Realms are the single best JavaScript feature coming any time in the future. I wish it were stage 4 already. I want to cry I'm so happy.
by "transform the code", this has to mean "parse/serialize a bytestream", as we have no standard AST representation. That's expensive! In the browser, we'd both recommend people *not* do that, and if they must, do it off-thread in the Service Worker.
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Sure, but that's a specific detail and having Realms built-in might provide a lot of avenues for optimization. Some smaller transforms can be very fast.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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& Web Standards TL; Blink API OWNER
Named PWAs w/
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