From: underfin <likui6666666@gmail.com>
Date: Thu, 15 Oct 2020 15:05:12 +0000 (+0800)
Subject: fix(hmr): full diff props for non-sfc component (#2359)
X-Git-Tag: v3.0.1~8
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e78915a74045ebcf34e8e99064fff48cd044632c;p=thirdparty%2Fvuejs%2Fcore.git

fix(hmr): full diff props for non-sfc component (#2359)

close #https://github.com/vitejs/vite/issues/872
---

diff --git a/packages/runtime-core/src/componentProps.ts b/packages/runtime-core/src/componentProps.ts
index 9fc2ac78b8..938318d4a9 100644
--- a/packages/runtime-core/src/componentProps.ts
+++ b/packages/runtime-core/src/componentProps.ts
@@ -156,8 +156,14 @@ export function updateProps(
   const [options] = instance.propsOptions
 
   if (
-    // always force full diff if hmr is enabled
-    !(__DEV__ && instance.type.__hmrId) &&
+    // always force full diff in dev
+    // - #1942 if hmr is enabled with sfc component
+    // - vite#872 non-sfc component used by sfc component
+    !(
+      __DEV__ &&
+      (instance.type.__hmrId ||
+        (instance.parent && instance.parent.type.__hmrId))
+    ) &&
     (optimized || patchFlag > 0) &&
     !(patchFlag & PatchFlags.FULL_PROPS)
   ) {