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JavaScript declarations in conditionals was discussed at TC39 recently, but consensus broke down over one key detail. How do you think it should behave?

finxol

@finxol.eu

I’d initially say it should be scoped to the else block too, because if the custom truthy-ness is false, the rest of the object might contain an error message which could be useful. But then I suppose for that use case, sticking to the current syntax makes more sense.

15/12/25, 6:01 pm0 reposts0 likes

finxol

@finxol.eu

15 Dec 2025

I’m not 100% sold on my opinion here. Without the custom check, I’d immediately say scope to `if` block only because you most likely wouldn’t do anything with a falsy value. So yeah, sticking to the new rust behaviour of else being out of scope is probably what i’d say is better