全局状态管理规范 (Pinia)

// src/store/user.ts
import { defineStore } from 'pinia';
import { ref } from 'vue';

export const useUserStore = defineStore('user', () => {
  const userInfo = ref(null);
  const loading = ref(false);

  const fetchUserInfo = async () => {
    if (userInfo.value) return userInfo.value;
    loading.value = true;
    try {
      userInfo.value = await http.get('/user/info');
    } finally {
      loading.value = false;
    }
  };

  return { userInfo, loading, fetchUserInfo };
});

<script setup lang="ts">
import { useUserStore } from '@/store/user';
import { storeToRefs } from 'pinia';

const userStore = useUserStore();
// 使用 storeToRefs 保持响应性
const { userInfo, loading } = storeToRefs(userStore);
// Action 直接调用
userStore.fetchUserInfo();
</script>