Middleware for input fields?

[bartenra]

I'm wondering if it's possible to add middleware / preprocessing for input fields?

My use case is that I want to add input field definition directives:

input SomeInput {
  name: String!
  description: String! @html
}

And then run (in this case) description through a HTML sanitizer.

[rafalp]

Is there any reason you can't do it with custom scalar like SanitizedString?

[bartenra]

Excellent idea!