deno.land / x / typebox@0.32.21 / changelog / 0.28.3.md
0.28.3
Overview
Revision 0.28.3 adds a new Rest type to support variadic type composition.
Contents
- Enhancements
Variadic Types
Revision 0.28.3 adds a new type named Type.Rest. This type is used to extract a tuple array of type of [...TSchema]. The return value of this type is not strictly JSON Schema, however the tuple array can be used as a parameter to other types that accept tuples as their arguments.
Tuple Concatenation
// TypeScript
type A = [1, 2]
type B = [3, 4]
type C = [...A, ...B]
// TypeBox
const A = Type.Tuple([Type.Literal(1), Type.Literal(2)])
const B = Type.Tuple([Type.Literal(3), Type.Literal(4)])
const C = Type.Tuple([...Type.Rest(A), ...Type.Rest(B)])Tuple To Parameter
// TypeScript
type P = [number, number]
type F1 = (param: [...P]) => void
type F2 = (param: [...P, number]) => void
// TypeBox
const P = Type.Tuple([Type.Number(), Type.Number()])
const F1 = Type.Function(Type.Rest(P), Type.Void())
const F2 = Type.Function([...Type.Rest(P), Type.Number()], Type.Void())typebox
Version Info
4 weeks ago
