From dec205665be511940c597d14a09838c3eafe12da Mon Sep 17 00:00:00 2001
From: Sven Slootweg <admin@cryto.net>
Date: Fri, 23 Oct 2020 22:48:37 +0200
Subject: [PATCH] Don't break when no content-type is set on a response

---
 operations/development-server.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/operations/development-server.js b/operations/development-server.js
index 2fefed3..3c733cc 100644
--- a/operations/development-server.js
+++ b/operations/development-server.js
@@ -18,7 +18,9 @@ function monkeyPatchEnd(res) {
 		let prefix;
 
 		if (originalChunk == null || typeof originalChunk === "string" || Buffer.isBuffer(originalChunk)) {
-			if (res.getHeader("content-type").startsWith("text/html")) {
+			let typeHeader = res.getHeader("content-type");
+
+			if (typeHeader != null && typeHeader.startsWith("text/html")) {
 				let contentLength = res.getHeader("content-length");
 				
 				if (contentLength != null) {