From 47fcce0dfbde758ea297e9a257006427bfa9ec7a Mon Sep 17 00:00:00 2001
From: Travis Cline <travis.cline@gmail.com>
Date: Thu, 5 Oct 2023 15:10:39 -0700
Subject: [PATCH] fix(webpack): add guard around onListening call (#19363)

---
 packages/webpack/src/utils/run-webpack.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/packages/webpack/src/utils/run-webpack.ts b/packages/webpack/src/utils/run-webpack.ts
index d3d9fb89e8b48..d131bc2c06870 100644
--- a/packages/webpack/src/utils/run-webpack.ts
+++ b/packages/webpack/src/utils/run-webpack.ts
@@ -22,7 +22,9 @@ export function runWebpackDevServer(
     const originalOnListen = devServerConfig.onListening;
 
     devServerConfig.onListening = function (server: any) {
-      originalOnListen(server);
+      if (typeof originalOnListen === 'function') {
+        originalOnListen(server);
+      }
 
       const devServerOptions: WebpackDevServerConfiguration = server.options;