fix: improve register check, close #876 (#878)

vuejs · Dec 27, 2021 · 3c2ad93 · 3c2ad93
1 parent a1a3e11
commit 3c2ad93
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/runtimeContext.ts b/src/runtimeContext.ts
@@ -43,7 +43,8 @@ export function isPluginInstalled() {
 }
 
 export function isVueRegistered(Vue: VueConstructor) {
-  return hasOwn(Vue, PluginInstalledFlag)
+  // resolve issue: https://github.com/vuejs/composition-api/issues/876#issue-1087619365
+  return vueConstructor && hasOwn(Vue, PluginInstalledFlag)
 }
 
 export function getVueConstructor(): VueConstructor {