feat:添加环境变量判断条件

config/webpack.config.js

@@ -161,7 +161,7 @@ module.exports = function(webpackEnv) {
       // to bring better experience for Create React App users. You can replace
       // the line below with these two lines if you prefer the stock client:
       // require.resolve('webpack-dev-server/client') + '?/',
-      require.resolve('webpack/hot/dev-server'),
+      isEnvDevelopment && require.resolve('webpack/hot/dev-server'),
       isEnvDevelopment &&
         require.resolve('react-dev-utils/webpackHotDevClient'),
       // Finally, this is your app's code: