From 7455e58270cf95e4fcdee7115df1fcc76f733717 Mon Sep 17 00:00:00 2001
From: Logan Smyth <loganfsmyth@gmail.com>
Date: Tue, 26 Sep 2017 18:31:32 -0700
Subject: [PATCH] Reuse config file merge.

---
 packages/babel-core/src/config/build-config-chain.js | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/packages/babel-core/src/config/build-config-chain.js b/packages/babel-core/src/config/build-config-chain.js
index 3edf48d623..4e84132fb7 100644
--- a/packages/babel-core/src/config/build-config-chain.js
+++ b/packages/babel-core/src/config/build-config-chain.js
@@ -146,12 +146,7 @@ class ConfigChainBuilder {
         return config.alias === extendsConfig.filepath;
       });
       if (!existingConfig) {
-        this.mergeConfig({
-          type: "options",
-          alias: extendsConfig.filepath,
-          options: extendsConfig.options,
-          dirname: extendsConfig.dirname,
-        });
+        this.mergeConfigFile(extendsConfig);
       }
     }
   }