What this snippet does
Decorators provide an elegant way to intercept calls and inject warnings or telemetry without modifying core logic.
Expected output
fetch is deprecated data
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.
More TypeScript practice
- Applying a basic class decoratorDecorators · advanced
- Injecting metadata into a classDecorators · advanced
- Decorator returning an invalid typeDecorators · advanced
- Logging method calls with a decoratorDecorators · advanced
- Losing 'this' context in method decoratorsDecorators · advanced
- Basic property decoratorDecorators · advanced