Class decorators are applied to complete classes and are used to modify or extend their behavior.

A class decorator is a function that applies to the constructor of a class and is often used for tasks such as registering classes, applying design patterns, or configuring additional metadata.

Syntax of a Class Decorator:

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In this example, the classDecorator decorator is applied to ExampleClass. When the ExampleClass is defined, the decorator executes and logs the name of the class to the console.

Practical Example:

Suppose we want to add a method to all classes that use a specific decorator.

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In this example, the addTimestamp decorator adds a timestamp property to ExampleWithTimestamp. Thus, each instance of ExampleWithTimestamp will have a timestamp that can be logged using the logTimestamp method.