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A comment on Modern Javascript: Everything you missed over the last 10 years (2020). Parent comment

Re:Modern Javascript: Everything you missed over the last 10... by errantspark on Saturday May 15, 2021 @01:51PM (#27167342)
Right but we have `let` now which solves that problem.
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Re:Modern Javascript: Everything you missed over the last 10... by titzer on Saturday May 15, 2021 @04:21PM (#27168633)
Not completely, `let` also has a weird temporal dead zone[1], which is basically a dynamic check.

[1] https://www.freecodecamp.org/news/what-is-the-temporal-dead-...

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Re:Modern Javascript: Everything you missed over the last 10... by IshKebab on Sunday May 16, 2021 @03:55AM (#27171996)
That's a good thing, and I'm not sure what you mean about it being a dynamic check.
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Re:Modern Javascript: Everything you missed over the last 10... by titzer on Sunday May 16, 2021 @01:38PM (#27175428)
It's a dynamic error if you access a let-bound variable before it is actually initialized. In most other languages that have lexically-scoped declarations, it simply would not be visible. So I think JS's choice is actually a regression.
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