From e8cbc1ee8a5ea53150b778e8d666d75d34b764cc Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Sun, 5 Apr 2026 14:11:29 +0100
Subject: [PATCH] fix(discord): support carbon ratelimit signature drift

---
 extensions/discord/src/proxy-request-client.ts | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/extensions/discord/src/proxy-request-client.ts b/extensions/discord/src/proxy-request-client.ts
index 6d00add05cc..5a18161fbc2 100644
--- a/extensions/discord/src/proxy-request-client.ts
+++ b/extensions/discord/src/proxy-request-client.ts
@@ -93,6 +93,19 @@ function toRateLimitBody(parsedBody: unknown, rawBody: string, headers: Headers)
   };
 }
 
+type RateLimitBody = ReturnType<typeof toRateLimitBody>;
+
+function createRateLimitErrorCompat(
+  response: Response,
+  body: RateLimitBody,
+  request: Request,
+): RateLimitError {
+  const RateLimitErrorCtor = RateLimitError as unknown as {
+    new (response: Response, body: RateLimitBody, request?: Request): RateLimitError;
+  };
+  return new RateLimitErrorCtor(response, body, request);
+}
+
 function toDiscordErrorBody(parsedBody: unknown, rawBody: string): DiscordRawError {
   if (isRecord(parsedBody) && typeof parsedBody.message === "string") {
     return parsedBody as DiscordRawError;
@@ -333,7 +346,7 @@ class ProxyRequestClientCompat {
 
     if (response.status === 429) {
       const rateLimitBody = toRateLimitBody(parsedBody, rawBody, response.headers);
-      const rateLimitError = new RateLimitError(response, rateLimitBody, originalRequest);
+      const rateLimitError = createRateLimitErrorCompat(response, rateLimitBody, originalRequest);
       this.scheduleRateLimit(
         routeKey,
         rateLimitError.retryAfter,