\@scalar
When applied to application domains, Database type systems are very rudimentary. This poses the problem of field validation and data serialization/deserialization across the wire. GraphQL offers a very elegant solution in Scalars.
Built-in support for scalars
Noun & Verb supports this with the scalar annotation. Further, it combines the variables supported by validator.js and supports these 76 scalar types out-of-the-box.
Specifying Custom scalar
Please see the section on scalars for details on adding custom scalars.