fix: move mount function to the next line of createApp (#80)

Author: ZhenXiongQian

transformations/__tests__/const-app.spec.ts

@@ -9,14 +9,11 @@ defineInlineTest(
   `Vue.createApp(App).use(button_counter).use(router).use(store).mount("#app");
 Vue.directive('demo', {})
 Vue.component('myComponent',{})
-
 `,
   `const app = Vue.createApp(App).use(button_counter).use(router).use(store);
+app.mount("#app");
 app.directive('demo', {})
-app.component('myComponent',{})
-
-app.mount("#app");`,
-
+app.component('myComponent',{})`,
   'add const app and transform Vue to app in main.js'
 )
 
@@ -26,12 +23,10 @@ defineInlineTest(
   `const app = Vue.createApp(App).use(button_counter).use(router).use(store);
 Vue.directive('demo', {})
 Vue.component('myComponent',{})
-
 app.mount("#app");`,
   `const app = Vue.createApp(App).use(button_counter).use(router).use(store);
 app.directive('demo', {})
 app.component('myComponent',{})
-
 app.mount("#app");`,
 
   'do not add const app when app.mount() is already exist '

transformations/const-app.ts

@@ -71,26 +71,7 @@ export const transformAST: ASTTransformation = ({ root, j }) => {
     ])
   )
 
-  let end = 0
-  let lastNode = createAppParent.get()
-  root.find(j.VariableDeclaration).forEach(node => {
-    // @ts-ignore
-    if (node.value.end > end) {
-      // @ts-ignore
-      end = node.value.end
-      lastNode = node
-    }
-  })
-  root.find(j.ExpressionStatement).forEach(node => {
-    // @ts-ignore
-    if (node.value.end > end) {
-      // @ts-ignore
-      end = node.value.end
-      lastNode = node
-    }
-  })
-
-  j(lastNode).insertAfter(
+  createAppParent.insertAfter(
     j.expressionStatement(
       j.callExpression(
         j.memberExpression(j.identifier('app'), j.identifier('mount')),