From 73f4cc6390dde843ff6e73710d1052dc14379d8c Mon Sep 17 00:00:00 2001
From: Connor Peet <connor@peet.io>
Date: Tue, 15 Dec 2020 09:41:12 -0800
Subject: [PATCH] fix(gatsby): Do not activate inspect if already active
 (#26708)

---
 packages/gatsby/src/commands/develop-process.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/packages/gatsby/src/commands/develop-process.ts b/packages/gatsby/src/commands/develop-process.ts
index 03abfb112024b..783d1b6dc4626 100644
--- a/packages/gatsby/src/commands/develop-process.ts
+++ b/packages/gatsby/src/commands/develop-process.ts
@@ -66,6 +66,10 @@ interface IDevelopArgs extends IProgram {
 }
 
 const openDebuggerPort = (debugInfo: IDebugInfo): void => {
+  if (inspector.url() !== undefined) {
+    return // fixes #26708
+  }
+
   if (debugInfo.break) {
     inspector.open(debugInfo.port, undefined, true)
     // eslint-disable-next-line no-debugger