From 37f9d3da8f0bca34c63315fa00a4ac73f400be24 Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Tue, 21 Nov 2023 22:09:38 +0800
Subject: [PATCH] wip: compiler-sfc should not attach ast on template with src
 import

---
 packages/compiler-sfc/__tests__/compileTemplate.spec.ts | 2 +-
 packages/compiler-sfc/__tests__/parse.spec.ts           | 7 ++++++-
 packages/compiler-sfc/src/parse.ts                      | 7 +++++--
 3 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/packages/compiler-sfc/__tests__/compileTemplate.spec.ts b/packages/compiler-sfc/__tests__/compileTemplate.spec.ts
index 9b57c1230..ca298df47 100644
--- a/packages/compiler-sfc/__tests__/compileTemplate.spec.ts
+++ b/packages/compiler-sfc/__tests__/compileTemplate.spec.ts
@@ -139,7 +139,7 @@ test('should work w/ AST from descriptor', () => {
     sourceMap: true
   }).descriptor.template!
 
-  expect(template.ast.source).toBe(source)
+  expect(template.ast!.source).toBe(source)
 
   const { code, map } = compile({
     filename: 'example.vue',
diff --git a/packages/compiler-sfc/__tests__/parse.spec.ts b/packages/compiler-sfc/__tests__/parse.spec.ts
index 6ae3427c7..7c8efdfc4 100644
--- a/packages/compiler-sfc/__tests__/parse.spec.ts
+++ b/packages/compiler-sfc/__tests__/parse.spec.ts
@@ -164,6 +164,11 @@ h1 { color: red }
     expect(descriptor.script!.attrs['src']).toBe('com')
   })
 
+  test('should not expose ast on template node if has src import', () => {
+    const { descriptor } = parse(`<template src="./foo.html"/>`)
+    expect(descriptor.template!.ast).toBeUndefined()
+  })
+
   test('ignoreEmpty: false', () => {
     const { descriptor } = parse(
       `<script></script>\n<script setup>\n</script>`,
@@ -211,7 +216,7 @@ h1 { color: red }
     expect(errors.length).toBe(0)
     expect(descriptor.template!.content).toBe(content)
     // should not attempt to parse the content
-    expect(descriptor.template!.ast.children.length).toBe(1)
+    expect(descriptor.template!.ast!.children.length).toBe(1)
   })
 
   //#2566
diff --git a/packages/compiler-sfc/src/parse.ts b/packages/compiler-sfc/src/parse.ts
index 3330254d2..618ffca2e 100644
--- a/packages/compiler-sfc/src/parse.ts
+++ b/packages/compiler-sfc/src/parse.ts
@@ -38,7 +38,7 @@ export interface SFCBlock {
 
 export interface SFCTemplateBlock extends SFCBlock {
   type: 'template'
-  ast: RootNode
+  ast?: RootNode
 }
 
 export interface SFCScriptBlock extends SFCBlock {
@@ -156,7 +156,10 @@ export function parse(
             source,
             false
           ) as SFCTemplateBlock)
-          templateBlock.ast = createRoot(node.children, source)
+
+          if (!templateBlock.attrs.src) {
+            templateBlock.ast = createRoot(node.children, source)
+          }
 
           // warn against 2.x <template functional>
           if (templateBlock.attrs.functional) {