Why do we need another library for GraphQL server applications?

Deepkit GraphQL

Use [Apollo](https://www.apollographql.com/docs/apollo-server/) as the underlying GraphQL server

Use [Yoga](https://the-guild.dev/graphql/yoga-server) as the underlying GraphQL server

In TypeScript, an inline type refers to a type definition declared directly at the point of use without assigning it a separate name.

In TypeScript, a referenced type is a type definition declared with a specific name, allowing it to be referred to or reused elsewhere in the code.