let WDS_SOCKET_PATH be undefined

Author: heygrady

packages/react-scripts/config/env.js

@@ -89,7 +89,7 @@ function getClientEnvironment(publicUrl) {
         // This lets a developer run multiple simultaneous projects.
         // It is used as the connection `pathname` in webpackHotDevClient.
         // It is used as the `sockPath` option in webpack dev server.
-        WDS_SOCKET_PATH: process.env.WDS_SOCKET_PATH || '/sockjs-node',
+        WDS_SOCKET_PATH: process.env.WDS_SOCKET_PATH,
       }
     );
   // Stringify all values so we can feed into Webpack DefinePlugin

packages/react-scripts/config/webpackDevServer.config.js

@@ -17,7 +17,7 @@ const fs = require('fs');
 
 const protocol = process.env.HTTPS === 'true' ? 'https' : 'http';
 const host = process.env.HOST || '0.0.0.0';
-const sockPath = process.env.WDS_SOCKET_PATH || undefined; // default: '/sockjs-node'
+const sockPath = process.env.WDS_SOCKET_PATH; // default: '/sockjs-node'
 
 module.exports = function(proxy, allowedHost) {
   return {