Merge pull request #45 from Brayden/bwilmoth/cors-preflight

CORS Preflight

Author: Brayden

src/cors.ts

@@ -5,7 +5,7 @@ export const corsHeaders = {
     'Access-Control-Max-Age': '86400',
 };
 
-export function corsPreflight(request: Request) {
+export function corsPreflight(request: Request): Response | undefined {
     // Handle OPTIONS preflight request first
     if (request.method === 'OPTIONS') {
         return new Response(null, {

src/index.ts

@@ -54,7 +54,13 @@ export default {
             const isWebSocket = request.headers.get("Upgrade") === "websocket";
 
             // Authorize the request with CORS rules before proceeding.
-            corsPreflight(request);
+            if (request.method === 'OPTIONS') {
+                const preflightResponse = corsPreflight(request)
+                
+                if (preflightResponse) {
+                    return preflightResponse;
+                }
+            }
 
             /**
              * If the request is a GET request to the /studio endpoint, we can handle the request