about partial struct

from reference:

partial structs are similar to object structs, but they only require that the specified properties exist, and they don’t care about other properties on the object.

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but when i try this

test = { a: 1, b: 2, c: 3 }
struct = partial({ a: number(), b: number() })
assert(test, struct)

it throws: Expected a value of type `never` for `c` but received `3`. i’m expecting it to not throw error. sorry for my bad english

[mikestopcontinues]

Thanks @hixus . So just to clarify, if only for myself:

• Shape/Object - Object has all of the defined keys and no others
• Type - Object has all of the defined keys and maybe others
• Partial - Object has some of the defined keys and no others
• [Nonexistent] - Object has some of the defined keys and maybe others

[albertgronholm]

So “partial” just simply doesn’t work at all like it’s supposed to? Is there any way I can reach similar behavior by doing something else? Any timeline for a fix?