Field becomes optional when value is any or unknown

const s = z.object({ x: z.unknown() })
type s = z.infer<typeof s>
// s has { x?: unknown } but should be { x: unknown }

[colinhacks]

How does one write anything but something must be passed in and it cannot be undefined?

This is the best I’ve got:

const schema = z.object({
    field: z.custom((x) => x !== undefined),
  });

[lostpebble]

What does it infer to? I’m almost certain it will infer to {}, which is the same as unknown and this will not correctly resemble empty objects. Actually, everything that extends an object will pass this from the inference point of view.

It infers to object - which is a standard TypeScript type for object and makes sense in this situation.

These type assertions seem to be correct to me:

In the code, I’ve made sure the “output” type is object in this case- so yea, its not quite the same as passing in {} and making it "passthrough"- there was a little more involved.