What are type aliases and generics in TypeScript?

What are type aliases in TypeScript?

Type aliases in TypeScript allow you to create a new name for a type. They can simplify complex types and improve code readability.

Can you give me an example of a type alias?

Sure! For instance, you can create a type alias for a function type like this: type StringFunction = (input: string) => string;.

What about generics? How do they work?

Generics allow you to create reusable components that can work with any data type. You define a placeholder type, like T, and use it in your functions or classes.

Can you show me a simple example of a generic function?

Absolutely! Here's a simple generic function: function identity<T>(arg: T): T { return arg; }. This function returns whatever you pass to it, regardless of the type.