Function stripOuter

packages/zod/src/v3/tests/generics.test.ts:8–17

(schema: TData, data: unknown)

test("generics", () => {
  async function stripOuter<TData extends z.ZodTypeAny>(schema: TData, data: unknown) {
    return z
      .object({
        nested: schema, // as z.ZodTypeAny,
      })
      .transform((data) => {
        return data.nested!;
      })
      .parse({ nested: data });
  }

  const result = stripOuter(z.object({ a: z.string() }), { a: "asdf" });
  util.assertEqual<typeof result, Promise<{ a: string }>>(true);