TypeScript

Injecting metadata into a class in TypeScript

TypeScriptDecoratorsClass Decoratorsadvanced

What this snippet does

Decorator factories accept arguments to configure behavior, often used to attach routing or ORM metadata to classes.

Expected output

User

Why practise typing this

Typing decorators 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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