What this snippet does
Static properties exist on the constructor function, not on the instance, leading to undefined when accessed via instance.
Expected output
Compile Error: Property 'x' is a static member of type 'C'.
Why practise typing this
Typing classes 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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