TypeScript interfaces can be used to declare custom data types in Angular. Interfaces specify a set of guidelines that objects that implement them must adhere to. For the object, they can define its attributes, methods, and data types. Use the 'interface' keyword, the interface name, and curly braces to define the attributes and data types when declaring a custom data type that uses an interface. Once defined, the interface can be used in the Angular application as a data type for variables, functions, and services.
In conclusion, you might think about watching Intellipaat's video training if you want to learn more about the data types in Angular. It was built entirely from scratch utilising all of the information. The video is available to view below.
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