T.omit

A structure: a copy of an object schema without the fields you name.

const UserSchema = T.object({
  id: T.number.integer.sequence,
  name: T.string.whereby({ length: { min: 1, max: 25 } }),
  password: T.string.whereby({ length: { min: 12, max: 40 } }),
});
 
const PublicUserSchema = T.omit(UserSchema, ["password"]);
// { id: number; name: string }

T.omit is T.pick with the selection inverted, and everything on that page applies here. A kept computed field that reads an omitted field still gets it; the field is fabricated and left out of the result.

T.omit removes a field from the schema. To make a field sometimes missing from a fabricated object, use T.omittable.