git clone from github

src/stores/counter.js

@@ -0,0 +1,19 @@
+import { ref, computed } from "vue";
+import { defineStore } from "pinia";
+
+const useCounterStore = defineStore("counter", () => {
+  const count = ref(0);
+  const doubleCount = computed(() => count.value * 2);
+
+  function increment() {
+    count.value++;
+  }
+
+  return {
+    count,
+    doubleCount,
+    increment
+  };
+})
+
+export default useCounterStore;