he/him 
Optimising for…of based on flow types and some basic type inference.pic.twitter.com/dsh59HrQj6
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@sebmck how would the unoptimized code look like? I can't think in any other output for that code
@MiguelCamba for...of needs to support all iterables and so it had to use symbols and handle abrupt completions. Try http://babeljs.io/repl
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@sebmck I see. I wasn’t aware that for..of was so complicated. The output is quite obscure. -
@miguelcamba Yeah, it has to handle things like generators etc and properly handle errors which you can safely ignore on arrays etc.
End of conversation
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