What this snippet does
Arrow functions with a single expression implicitly return it — wrap objects in () to distinguish from a block body.
Expected output
10
7
Hello, Alice!
{ key: 'value' }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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