TypeScript unknown types form services

Good afternoon.
Upon receipt of the types of typescript some types are not defined and I don’t know where to get,
please Tell me how can I solve this problem?

Thank you!

The data I get is similar to this: http://techstacks.io/types/typescript

And one more thing, when generating types for typescript there is no “delar” and in the new versions it is required.

The HttpResult is an internal class it should never be defined in your DTOs, find out where you’re using it and remove it.

Do you have any links that says “declare enum” is now required?

Thank you, I understand )

Sorry, my mistake, I mixed up typings.