fix: page 访问断言 this 类型

main.uts

@@ -7,7 +7,7 @@ export function createApp() {
   app.mixin({
     onReady() {
       setTimeout(() => {
-        console.log(this.$nativePage!.getDomJson())
+        console.log((this as BasePage).$appPage!.getDomJson())
       }, 100)
     }
   })