From 69976e80d7b761a72479f5b942f1c7d6a4582aec Mon Sep 17 00:00:00 2001
From: Feross Aboukhadijeh <feross@feross.org>
Date: Thu, 28 Jan 2021 15:16:53 -0500
Subject: [PATCH] give user a friendlier error when address() is unavailable
 due to noServer

---
 server.js | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/server.js b/server.js
index c705e7f..e490d7a 100644
--- a/server.js
+++ b/server.js
@@ -120,11 +120,14 @@ class Server extends EventEmitter {
         clientTracking: false,
         ...(isObject(opts.ws) ? opts.ws : undefined)
       })
-      if (!noServer) {
-        this.ws.address = () => {
-          return this.http.address()
+
+      this.ws.address = () => {
+        if (noServer) {
+          throw new Error('address() unavailable with { noServer: true }')
         }
+        return this.http.address()
       }
+
       this.ws.on('error', err => { this._onError(err) })
       this.ws.on('connection', (socket, req) => {
         // Note: socket.upgradeReq was removed in ws@3.0.0, so re-add it.