1  import { ref, computed } from 'vue'
 2  import { defineStore } from 'pinia'
 3  
 4  export const useCounterStore = defineStore('counter', () => {
 5    const count = ref(0)
 6    const doubleCount = computed(() => count.value * 2)
 7    function increment() {
 8      count.value++
 9    }
10  
11    return { count, doubleCount, increment }
12  })