Vercel AI SDK 如何实现结构化数据输出？

import { generateObject } from 'ai';
import { z } from 'zod';

const { object } = await generateObject({
  model: 'anthropic/claude-sonnet-4-6',
  schema: z.object({
    name: z.string(),
    age: z.number(),
    city: z.string(),
  }),
  prompt: '提取信息：张三今年 25 岁，住在北京',
});

console.log(object); // { name: '张三', age: 25, city: '北京' }