fix(vapor): handle vapor mode with empty script

Author: edison1105

packages/compiler-sfc/__tests__/parse.spec.ts

@@ -381,6 +381,17 @@ h1 { color: red }
     })
   })
 
+  describe('vapor mode', () => {
+    test('on empty script', () => {
+      const { descriptor } = parse(`<script vapor></script>`)
+      expect(descriptor.vapor).toBe(true)
+    })
+    test('on template', () => {
+      const { descriptor } = parse(`<template vapor><div/></template>`)
+      expect(descriptor.vapor).toBe(true)
+    })
+  })
+
   describe('warnings', () => {
     function assertWarning(errors: Error[], msg: string) {
       expect(errors.some(e => e.message.match(msg))).toBe(true)

packages/compiler-sfc/src/parse.ts

@@ -162,8 +162,9 @@ export function parse(
       ignoreEmpty &&
       node.tag !== 'template' &&
       isEmpty(node) &&
-      !hasSrc(node)
+      !hasProp(node, 'src')
     ) {
+      descriptor.vapor ||= hasProp(node, 'vapor')
       return
     }
     switch (node.tag) {
@@ -409,12 +410,12 @@ function padContent(
   }
 }
 
-function hasSrc(node: ElementNode) {
+function hasProp(node: ElementNode, name: string) {
   return node.props.some(p => {
     if (p.type !== NodeTypes.ATTRIBUTE) {
       return false
     }
-    return p.name === 'src'
+    return p.name === name
   })
 }