Zod V4 Treeify Schema for Flattened Treeify Errors

zod-schema.ts

const TreeifyErrorNode: z.ZodType<any> = z.lazy(() =>
    z.object({
        errors: z.array(z.string()),
        properties: z.record(z.string(), TreeifyErrorNode).optional(),
        items: z.array(TreeifyErrorNode.or(z.undefined())).optional(),
    })
);