From a878a7059d8055b78055d0e3f901cc00598f4b6e Mon Sep 17 00:00:00 2001
From: zrh122 <1229550935@qq.com>
Date: Fri, 21 Jun 2019 11:28:17 +0800
Subject: [PATCH] fix: fix getting shadow root when component is functional

---
 lib/runtime/componentNormalizer.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/runtime/componentNormalizer.js b/lib/runtime/componentNormalizer.js
index 6e2e9e764..6ece8a8e5 100644
--- a/lib/runtime/componentNormalizer.js
+++ b/lib/runtime/componentNormalizer.js
@@ -62,7 +62,12 @@ export default function normalizeComponent (
     options._ssrRegister = hook
   } else if (injectStyles) {
     hook = shadowMode
-      ? function () { injectStyles.call(this, this.$root.$options.shadowRoot) }
+      ? function () {
+        injectStyles.call(
+          this,
+          (options.functional ? this.parent : this).$root.$options.shadowRoot
+        )
+      }
       : injectStyles
   }