From: daiwei <daiwei521@126.com>
Date: Thu, 14 Aug 2025 08:02:08 +0000 (+0800)
Subject: fix: add __vapor flag in SSR script
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=357f208199e26fa35e98e5de9360612cb1743165;p=thirdparty%2Fvuejs%2Fcore.git

fix: add __vapor flag in SSR script
---

diff --git a/packages/compiler-sfc/src/compileScript.ts b/packages/compiler-sfc/src/compileScript.ts
index 54ca260bdd..686747458e 100644
--- a/packages/compiler-sfc/src/compileScript.ts
+++ b/packages/compiler-sfc/src/compileScript.ts
@@ -980,6 +980,11 @@ export function compileScript(
     ctx.hasDefineExposeCall || options.inlineTemplate ? `` : `  __expose();\n`
   // wrap setup code with function.
   if (ctx.isTS) {
+    // in SSR, always use defineComponent, so __vapor flag is required
+    if (ssr && vapor) {
+      runtimeOptions += `\n  __vapor: true,`
+    }
+
     // for TS, make sure the exported type is still valid type with
     // correct props information
     // we have to use object spread for types to be merged properly