What Is Angular Metadata

Metadata is used to decorate a class so that it can configure the expected behavior of the class. … The component decorator is used to declare the class in the app. component.

What is decorator and metadata in Angular?

Decorator that marks a class as an Angular component and provides configuration metadata that determines how the component should be processed, instantiated, and used at runtime.

How does Angular 2 define metadata?

Description. Metadata is a way of processing the class and a component called MyComponent will act as a class until we tell Angular that it’s a component. User can use metadata to the class to tell Angular that MyComponent is a component. Metadata can be attached to TypeScript using a decorator.