Parse against input schema

[BrendanC23]

It would be great if there was a way to parse against the input schema. Playground

This would be useful when saving draft data for an incomplete form. For example:

1. Create a form with a schema, where the form defaults are of type SchemaInput
2. User completes some form fields and wants to save a draft of their data
3. The form data is saved as JSON in the database
4. The JSON form data is retrieved from the database and has type unknown
5. Before running form.setValues(jsonData), it needs to be of type SchemaInput

Currently, the final step is done with a cast (jsonData as SchemaInput), but it would be nice to explicitly validate this by parsing the object against the schema input type.

const Schema = v.object({
  email: v.pipe(v.nullable(v.string()), v.string()),
});

type SchemaInput = v.InferInput<typeof Schema>; // { email: string | null }
type SchemaOutput = v.InferOutput<typeof Schema>; // { email: string }

const parsedData = v.parseInput(Schema, { email: null }); // Would be { email: string | null }

[fabian-hiller]

Great idea! Unfortunately, this seems to be out of scope at the moment. But everyone should feel welcome to discuss this feature here and investigate how we could implement it.