What this snippet does
IIFE (Immediately Invoked Function Expression) creates an isolated scope — the classic pre-module encapsulation pattern.
Expected output
84
Why practise typing this
Typing functions code builds muscle memory for the symbols and indentation JavaScript 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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