From 1703976a4f5bf39191c06a86404775448fd7fb86 Mon Sep 17 00:00:00 2001
From: Hariom Balhara <hariombalhara@gmail.com>
Date: Mon, 2 May 2022 11:30:08 +0530
Subject: [PATCH] Fix docs request

---
 package.json      |  1 +
 pages/api/docs.ts | 11 ++++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/package.json b/package.json
index 18d9081665..91eca0e3cc 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
   "private": true,
   "scripts": {
     "dev": "next build && PORT=3002 next start",
+    "dev-real":"PORT=3002 next dev",
     "start": "PORT=3002 next start",
     "build": "next build",
     "lint": "next lint",
diff --git a/pages/api/docs.ts b/pages/api/docs.ts
index dd544e89ae..943c6b9f25 100644
--- a/pages/api/docs.ts
+++ b/pages/api/docs.ts
@@ -29,7 +29,16 @@ const swaggerHandler = withSwagger({
 });
 
 export default use(
-  modifyRes((content: string, _req: NextApiRequest, _res: NextApiResponse) => {
+  modifyRes((content: string, _req: NextApiRequest, res: NextApiResponse) => {
+    // Add all headers here instead of next.config.js as it is throwing error( Cannot set headers after they are sent to the client) for OPTIONS method
+    // It is known to happen only in Dev Mode.
+    res.setHeader("Access-Control-Allow-Credentials", "true");
+    res.setHeader("Access-Control-Allow-Origin", "*");
+    res.setHeader("Access-Control-Allow-Methods", "GET, OPTIONS, PATCH, DELETE, POST, PUT");
+    res.setHeader(
+      "Access-Control-Allow-Headers",
+      "X-CSRF-Token, X-Requested-With, Accept, Accept-Version, Content-Length, Content-MD5, Content-Type, Date, X-Api-Version, Content-Type, api_key, Authorization"
+    );
     if (content) {
       const parsed = JSON.parse(content);
       delete parsed.channels;