test: update test case

packages/integrations/vue/client.js

@@ -1,5 +1,5 @@
 import { h, createSSRApp, createApp, Suspense } from 'vue';
-import virtualVueApp from 'virtual:@astrojs/vue/app';
+import * as virtualApp from 'virtual:@astrojs/vue/app';
 import StaticHtml from './static-html.js';
 
 export default (element) =>
@@ -29,8 +29,9 @@ export default (element) =>
 			},
 		});
 
-		if (typeof virtualVueApp?.setup === 'function') {
-			await virtualVueApp.setup(app);
+		const setup = virtualApp.default;
+		if (typeof setup === 'function') {
+			await setup(app);
 		}
 		app.mount(element, isHydrate);
 

packages/integrations/vue/server.js

@@ -1,6 +1,6 @@
 import { h, createSSRApp } from 'vue';
 import { renderToString } from 'vue/server-renderer';
-import virtualVueApp from 'virtual:@astrojs/vue/app';
+import * as virtualApp from 'virtual:@astrojs/vue/app';
 import StaticHtml from './static-html.js';
 
 function check(Component) {
@@ -21,8 +21,9 @@ async function renderToStaticMarkup(Component, inputProps, slotted, metadata) {
 			});
 	}
 	const app = createSSRApp({ render: () => h(Component, props, slots) });
-	if (typeof virtualVueApp?.setup === 'function') {
-		await virtualVueApp.setup(app);
+	const setup = virtualApp.default;
+	if (typeof setup === 'function') {
+		await setup(app);
 	}
 	const html = await renderToString(app);
 	return { html };

packages/integrations/vue/src/index.ts

@@ -46,9 +46,9 @@ function virtualAppEntrypoint(options?: Options) {
 			if (id === resolvedVirtualModuleId) {
 				if (options?.appEntrypoint) {
 					return `
-						import __setup from "${options.appEntrypoint}";
+						import * as _virtualApp from "${options.appEntrypoint}";
 						export const setup = (app) => {
-							__setup?.(app);
+							_virtualApp.default?.(app);
 						};
 					`;
 				}