he/him 
Optimising for…of based on flow types and some basic type inference.pic.twitter.com/dsh59HrQj6
-
@sebmck can babel put out code that checks of it's an array at runtime and does a regular for loop. So you can get speed even w/o inference
@tikotzky I guess it could, although in those scenarios whether it's an array or not would be constant so the benefits would be tangible.
-
-
@sebmck I'm referring to the case where it can't infer because object being iterated is being required. You can still optimize at runtime. - End of conversation
New conversation -
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.