refactor: code optimize

App.vue

@@ -32,10 +32,6 @@ export default {
   onLastPageBackPress: function (): boolean | null {
     // 自动化测试
     setLifeCycleNum(state.lifeCycleNum - 1000)
-    uni.showToast({
-      title: '再按一次退出应用',
-      position: 'bottom',
-    })
     return null
   },
 }

store/index.uts

-class State {
-  constructor(public lifeCycleNum: number) {
-  }
+type State = {
+  lifeCycleNum: number
 }
 
-export const state = reactive(new State(0))
+export const state = reactive({ lifeCycleNum: 0 } as State)
 
 export const setLifeCycleNum = (num: number) => {
   state.lifeCycleNum = num