From 20dd09d0a80cf88af07a14364d766ee50fce92a5 Mon Sep 17 00:00:00 2001
From: mattwmj <mattwmj@outlook.com>
Date: Sun, 30 Sep 2018 18:43:32 +0800
Subject: [PATCH] fix: build --target lib should merge externals in
 vue.config.js (#2653)

fixes #2646
---
 packages/@vue/cli-service/lib/commands/build/resolveLibConfig.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/@vue/cli-service/lib/commands/build/resolveLibConfig.js b/packages/@vue/cli-service/lib/commands/build/resolveLibConfig.js
index 0d1780cf7..dd32783f5 100644
--- a/packages/@vue/cli-service/lib/commands/build/resolveLibConfig.js
+++ b/packages/@vue/cli-service/lib/commands/build/resolveLibConfig.js
@@ -46,6 +46,7 @@ module.exports = (api, { entry, name }, options) => {
     // externalize Vue in case user imports it
     config
       .externals({
+        ...config.get('externals'),
         vue: {
           commonjs: 'vue',
           commonjs2: 'vue',