HTTPError: also include the associated Request object

src/api/HTTPError.ts

@@ -1,10 +1,12 @@
 export class HTTPError extends Error {
 
   response: Response;
+  request: Request;
 
-  constructor(response: Response) {
+  constructor(response: Response, request: Request) {
     super(response.statusText);
     this.response = response;
+    this.request = request;
   }
 
 }

src/api/MastodonClient.ts

@@ -84,7 +84,7 @@ export class MastodonClient {
     const response = await this.fetch(request);
 
     if (!response.ok) {
-      throw new HTTPError(response);
+      throw new HTTPError(response, request);
     }
 
     return response;