fix(runtime-core): fix resolving assets from mixins and extends

fix #1963

packages/runtime-core/src/component.ts

@@ -24,7 +24,7 @@ import { Slots, initSlots, InternalSlots } from './componentSlots'
 import { warn } from './warning'
 import { ErrorCodes, callWithErrorHandling } from './errorHandling'
 import { AppContext, createAppContext, AppConfig } from './apiCreateApp'
-import { validateDirectiveName } from './directives'
+import { Directive, validateDirectiveName } from './directives'
 import { applyOptions, ComponentOptions } from './componentOptions'
 import {
   EmitsOptions,
@@ -221,6 +221,17 @@ export interface ComponentInternalInstance {
    */
   renderCache: (Function | VNode)[]
 
+  /**
+   * Resolved component registry, only for components with mixins or extends
+   * @internal
+   */
+  components: Record<string, ConcreteComponent> | null
+  /**
+   * Resolved directive registry, only for components with mixins or extends
+   * @internal
+   */
+  directives: Record<string, Directive> | null
+
   // the rest are only for stateful components ---------------------------------
 
   /**
@@ -372,6 +383,10 @@ export function createComponentInstance(
     accessCache: null!,
     renderCache: [],
 
+    // local resovled assets
+    components: null,
+    directives: null,
+
     // state
     ctx: EMPTY_OBJ,
     data: EMPTY_OBJ,
@@ -733,7 +748,8 @@ export function formatComponentName(
     }
     name =
       inferFromRegistry(
-        (instance.parent.type as ComponentOptions).components
+        instance.components ||
+          (instance.parent.type as ComponentOptions).components
       ) || inferFromRegistry(instance.appContext.components)
   }