From ef2ec03ff5ca4e4657b43e5f6b410d6118a1f447 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=B5=B5=E8=B6=8A?= <shadowingszy@outlook.com>
Date: Fri, 3 Jul 2020 23:14:55 +0800
Subject: [PATCH] fix(compiler): fix the bug 'root level <script> tags will be
 executed' at the compilation level

fix #11483
---
 src/compiler/codegen/index.js                  |  2 +-
 test/unit/features/component/component.spec.js | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/compiler/codegen/index.js b/src/compiler/codegen/index.js
index c96b3a38511..754e7759b6d 100644
--- a/src/compiler/codegen/index.js
+++ b/src/compiler/codegen/index.js
@@ -45,7 +45,7 @@ export function generate (
   options: CompilerOptions
 ): CodegenResult {
   const state = new CodegenState(options)
-  const code = ast ? genElement(ast, state) : '_c("div")'
+  const code = ast ? (ast.tag === 'script' ? 'null' : genElement(ast, state) ) : '_c("div")'
   return {
     render: `with(this){return ${code}}`,
     staticRenderFns: state.staticRenderFns
diff --git a/test/unit/features/component/component.spec.js b/test/unit/features/component/component.spec.js
index 34c037a1e74..697a9dddbe7 100644
--- a/test/unit/features/component/component.spec.js
+++ b/test/unit/features/component/component.spec.js
@@ -426,4 +426,17 @@ describe('Component', () => {
       vm.$destroy()
     }).then(done)
   })
+
+  it('render vnode with <script> tag as root element', () => {
+    const vm = new Vue({
+      template: '<scriptTest></scriptTest>',
+      components: {
+        scriptTest: {
+          template: '<script>console.log(1)</script>'
+        }
+      }
+    }).$mount()
+    expect(vm.$el.nodeName).toBe('#comment')
+    expect('Templates should only be responsible for mapping the state').toHaveBeenWarned()
+  })
 })