What this snippet does
Using let in loops creates a new binding per iteration, preventing closure bugs and keeping variables scoped tightly.
Expected output
ReferenceError: loopVal is not defined
Why practise typing this
Typing variables and declarations code builds muscle memory for the symbols and indentation TypeScript uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
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