From b893bec4e637bb3a8b2700a1a3ade3707497b283 Mon Sep 17 00:00:00 2001
From: Frazer Smith <frazer.dev@outlook.com>
Date: Sat, 27 May 2023 14:31:27 +0100
Subject: [PATCH] fix(index): handle array of content-type headers (#32)

---
 src/index.js      | 5 ++++-
 src/index.test.js | 7 +++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/index.js b/src/index.js
index f55897a..770931a 100644
--- a/src/index.js
+++ b/src/index.js
@@ -18,7 +18,10 @@ const secJSON = require("secure-json-parse");
 async function fastifyJsonToXml(server, options) {
 	server.addHook("onSend", async (req, res, payload) => {
 		if (
-			res.getHeader("content-type")?.includes("application/json") &&
+			res
+				.getHeader("content-type")
+				?.toString()
+				?.includes("application/json") &&
 			accepts(req).type(["application/json", "application/xml"]) ===
 				"application/xml"
 		) {
diff --git a/src/index.test.js b/src/index.test.js
index e66f019..7a9c7d3 100644
--- a/src/index.test.js
+++ b/src/index.test.js
@@ -51,6 +51,13 @@ describe("JSON-To-XML plugin", () => {
 					accept: "application/json",
 				},
 			},
+			{
+				testName:
+					"JSON body if 'application/json' before '*/*' in accept header",
+				headers: {
+					accept: "application/json, */*",
+				},
+			},
 			{
 				testName:
 					"JSON body if 'application/json' before 'application/xml' in accept header",