From a187f6f7801bba70f35e94f3cf47c936c1017f85 Mon Sep 17 00:00:00 2001
From: Haoqun Jiang <haoqunjiang@gmail.com>
Date: Fri, 14 May 2021 16:56:29 +0800
Subject: [PATCH] fix(mocha): set mode to `none` to avoid DefinePlugin conflict

---
 packages/@vue/cli-plugin-unit-mocha/index.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/packages/@vue/cli-plugin-unit-mocha/index.js b/packages/@vue/cli-plugin-unit-mocha/index.js
index 9c921650fc..f95cd7a9ec 100644
--- a/packages/@vue/cli-plugin-unit-mocha/index.js
+++ b/packages/@vue/cli-plugin-unit-mocha/index.js
@@ -1,6 +1,8 @@
 module.exports = api => {
   api.chainWebpack(webpackConfig => {
     if (process.env.NODE_ENV === 'test') {
+      webpackConfig.mode('none')
+
       webpackConfig.merge({
         target: 'node',
         devtool: 'inline-cheap-module-source-map'