Types of Decorators

Introduction to decorator types

Decorators are functions that are invoked by the JavaScript runtime when a class is defined. Depending on what type of decorator is used, these decorator functions will be invoked with different arguments.

Let’s take a quick look at the types of decorators, which are:

• Class decorators: These are decorators that can be applied to a class definition.

• Property decorators: These are decorators that can be applied to a property within a class.

• Method decorators: These are decorators that can be applied to a method on a class.

• Parameter decorators: These are decorators that can be applied to a parameter of a method within a class.

As an example of these types of decorators, consider the following code: