What this snippet does
Even if a function accepts an abstract constructor, TypeScript prevents direct instantiation inside the function without a concrete subclass.
Expected output
Compile Error: Cannot create an instance of an abstract class.
Why practise typing this
Typing advanced classes & oop 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.
More TypeScript practice
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- Returning the current class instance typeAdvanced Classes & OOP · advanced