Firefox 30+ warns devs of the negative perf impact when using __proto__ & Object.setPrototypeOf -http://mzl.la/1i8wpB0
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@slightlylate@jdalton Performance warnings belong in performance tools. -
@johnjbarton : which devtools is (are?). /cc@jdalton
End of conversation
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& Web Standards TL; Blink API OWNER
Named PWAs w/
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