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sinclairzx81 avatar sinclairzx81 commented on May 12, 2024 2

@MikeYermolayev Hi, You can compose in multiple objects with Type.Intersect().

const A = Type.Object({          // type A = { 
    x: Type.Number(),            //   x: number, 
    y: Type.Number(),            //   y: number 
})                               // }

const B = Type.Object({          // type B = { 
    a: Type.Number(),            //   a: number, 
    b: Type.Number(),            //   b: number 
})                               // }

const C = Type.Intersect([A, B]) // type C = A & B

With respect to things like Pick and Omit, currently TypeBox schemas are additive only so it's currently not possible to do things like...

const Vector3 = Type.Object({
    x: Type.Number(),
    y: Type.Number(),
    z: Type.Number(),
})
// subtractive
const Vector2 = Type.Pick(Vector3, ['x', 'y'])
// or
const Vector2 = Type.Omit(Vector3, ['z'])

Instead this would be expressed as.

const Vector2 = Type.Object({
    x: Type.Number(),
    y: Type.Number()
})
// additive
const Vector3 = Type.Intersect([Vector2,
    Type.Object({
        z: Type.Number()
    })])

Implementing Omit and Pick would be interesting though, may actually look into this in future.

Hope this helps!
S

from typebox.

misha-erm avatar misha-erm commented on May 12, 2024

Oh, sorry, haven’t noticed it in the docs. Should’ve read more carefully)

Thank you👍🏻

from typebox.

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