Typescript Generic and Non-Generic Version of Type

Question

I have a very short question, I'm trying to make two classes in typescript:

export class ServiceResponse { }

export class ServiceResponse<T> extends ServiceResponse {}

but according to typescript, these are duplicate identifiers. Is it possible to use the same name with a generic type argument in typescript? Is this a problem that someone has solved before? I come from a C# background, where this pattern is fairly common.

Thanks!

Answer 1

Aleksey answered the question in the comment above, but just wanted to provide an actual answer with more context for future reference

This is expected since the Typescript type annotations (including the generic type parameter <T> here) are stripped out when compiled down to JavaScript, and you end up with two classes with the same name, hence the duplicate identifier error.

In order to define a generic and non-generic versions of the same class, you can specify a default value for your generic type parameter:

export class ServiceResponse<T = void> {
}