ToStructural

Type class for converting nominal schemas to structural schemas.

Given a Schema[A] for a nominal type like a case class, this type class generates the corresponding structural type and provides a conversion method.

Example:

// scala-3-only
case class Person(name: String, age: Int)

val nominalSchema: Schema[Person] = Schema.derived[Person]
val structuralSchema: Schema[{ def name: String; def age: Int }] = nominalSchema.structural

In Scala 2 the compiler does not see the refined StructuralType, so nominalSchema.structural has type Schema[ts.StructuralType] and cannot be assigned to a Schema of the structural type.

Note: This is JVM-only due to reflection requirements for structural types.