split get-first-component-child

src/core/vdom/helpers/get-first-component-child.js

@@ -0,0 +1,14 @@
+/* @flow */
+
+import { isDef } from 'shared/util'
+
+export function getFirstComponentChild (children: ?Array<VNode>): ?VNode {
+  if (Array.isArray(children)) {
+    for (let i = 0; i < children.length; i++) {
+      const c = children[i]
+      if (isDef(c) && isDef(c.componentOptions)) {
+        return c
+      }
+    }
+  }
+}

src/core/vdom/helpers/index.js

@@ -5,7 +5,4 @@ export * from './extract-props'
 export * from './update-listeners'
 export * from './normalize-children'
 export * from './resolve-async-component'
-
+export * from './get-first-component-child'
-export function getFirstComponentChild (children: ?Array<VNode>): ?VNode {
-  return children && children.filter((c: VNode) => c && c.componentOptions)[0]
-}