fix(types): add explicit | undefined to optional fields (#462)

When typescript is used with the option `exactOptionalProperty: true`, this code fails to typecheck if `undefined` is passed in for the response value.

This is because `exactOptionalProperty` makes tsc consider `?:..` different from `: ... | undefined` for more strictness.

Author: ammubhave

src/index.ts

@@ -20,7 +20,7 @@ export class RequestError extends Error {
   /**
    * Response object if a response was received
    */
-  response?: OctokitResponse<unknown>;
+  response?: OctokitResponse<unknown> | undefined;
 
   constructor(
     message: string,

src/types.ts

@@ -1,6 +1,6 @@
 import type { RequestOptions, OctokitResponse } from "@octokit/types";
 
 export type RequestErrorOptions = {
-  response?: OctokitResponse<unknown>;
+  response?: OctokitResponse<unknown> | undefined;
   request: RequestOptions;
 };