fix

src/index.ts

@@ -97,7 +97,9 @@ export default {
     try {
       await ensureAdminUser(env);
       const response = await route(request, env);
-      ctx.waitUntil(processOutgoingDeliveries(env));
+      if (shouldDrainOutgoingDeliveries(request)) {
+        ctx.waitUntil(processOutgoingDeliveries(env));
+      }
       return response;
     } catch (error) {
       if (error instanceof HttpError) return json({ error: error.message }, error.status);
@@ -252,3 +254,8 @@ function wantsHtmlDocument(request: Request): boolean {
   const accept = request.headers.get("accept") ?? "";
   return /\btext\/html\b/i.test(accept) && !/(application\/activity\+json|application\/ld\+json)/i.test(accept);
 }
+
+function shouldDrainOutgoingDeliveries(request: Request): boolean {
+  const method = request.method.toUpperCase();
+  return method === "POST" || method === "PUT" || method === "PATCH" || method === "DELETE";
+}