如何在zod和react hook形式中给出数字类型的默认值(但不是零)?

我的表单使用zod和react hooks表单。我有价格的输入字段。为了防止不受控制的输入错误,我们需要给defaultValues,但它迫使我给价格默认值0。我不希望它是零。我能把它变成空的吗?

import * as z from "zod";

export const ProductSchema = z.object({
  title: z.string().min(2),
  price: z.number().positive(),
  discount: z.number().int().min(0).max(100),
  ...
})

export type ProductType = z.infer<typeof ProductSchema>;

我的表格是这样的:

const form = useForm<ProductType>({
    resolver: zodResolver(ProductSchema),
    defaultValues: {
      title: "",
      price: 0,
      discount: 0,
      ....
    },
  });

为了造型,我使用了shadcn表单组件:

<FormField
                  control={control}
                  render={({ field }) => (
                    <FormItem>
                      <FormLabel>Price</FormLabel>
                      <Input
                        {...field}
                        disabled={isPending}
                        placeholder="Price of product"
                        type="number"
                        className="shadow-sm focus:ring-primary-500 focus:border-primary-500 sm:text-sm border-gray-300 rounded-md bg-white"
                      />
                      <FormMessage>{errors.price?.message}</FormMessage>
                    </FormItem>
                  )}
                  name="price"
                />