fix: remove get children when no dynamic node

packages/compiler-vapor/__tests__/__snapshots__/compile.test.ts.snap

@@ -0,0 +1,23 @@
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+
+exports[`comile > bindings 1`] = `
+"import { watchEffect } from 'vue'
+import { template, setText } from 'vue/vapor'
+const t0 = template(\`<div></div>\`)
+export function render() {
+const root = t0()
+watchEffect(() => {
+setText(n0, undefined, count.value)
+})
+return root
+}"
+`;
+
+exports[`comile > static template 1`] = `
+"import { template } from 'vue/vapor'
+const t0 = template(\`<div><p>hello</p><input></div>\`)
+export function render() {
+const root = t0()
+return root
+}"
+`;

packages/compiler-vapor/__tests__/__snapshots__/basic.test.ts.snap → packages/compiler-vapor/__tests__/__snapshots__/fixtures.test.ts.snap

@@ -1,6 +1,6 @@
 // Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
-exports[`basic 1`] = `
+exports[`fixtures 1`] = `
 "import { defineComponent as _defineComponent } from 'vue'
 import { watchEffect } from 'vue'
 import { template, insert, setText, on, setHtml } from 'vue/vapor'

packages/compiler-vapor/__tests__/compile.test.ts

@@ -0,0 +1,24 @@
+import { BindingTypes } from '@vue/compiler-dom'
+import { compile } from '../src'
+
+describe('comile', () => {
+  it('static template', () => {
+    const { code } = compile(
+      `<div>
+        <p>hello</p>
+        <input />
+      </div>`,
+      {},
+    )
+    expect(code).matchSnapshot()
+  })
+
+  it('bindings', () => {
+    const { code } = compile(`<div>{{ count }}</div>`, {
+      bindingMetadata: {
+        count: BindingTypes.SETUP_REF,
+      },
+    })
+    expect(code).matchSnapshot()
+  })
+})

packages/compiler-vapor/__tests__/basic.test.ts → packages/compiler-vapor/__tests__/fixtures.test.ts

@@ -1,9 +1,8 @@
 import * as CompilerVapor from '../src'
-// import * as CompilerDOM from '@vue/compiler-dom'
 import { parse, compileScript } from '@vue/compiler-sfc'
 import source from './fixtures/counter.vue?raw'
 
-test('basic', async () => {
+test('fixtures', async () => {
   const { descriptor } = parse(source, { compiler: CompilerVapor })
   const script = compileScript(descriptor, {
     id: 'counter.vue',

packages/compiler-vapor/src/generate.ts

@@ -29,7 +29,7 @@ export function generate(
 
   // TODO multiple-template
   code += `const root = t0()\n`
-  if (ir.children[0]) {
+  if (ir.children[0] && Object.keys(ir.children[0].children).length) {
     code += `const {${genChildren(ir.children[0].children)}} = children(root)\n`
     vaporHelpers.add('children')
   }