Merge pull request #444 from dhensby/fix/types-savetoken-oautherror

fix(types): OAuthError.inner, saveToken input, and getClient clientSecret

Author: jankapunkt

index.d.ts

@@ -258,13 +258,13 @@ declare namespace OAuth2Server {
          * Invoked to retrieve a client using a client id or a client id/client secret combination, depending on the grant type.
          *
          */
-        getClient(clientId: string, clientSecret: string): Promise<Client | Falsey>;
+        getClient(clientId: string, clientSecret?: string): Promise<Client | Falsey>;
 
         /**
          * Invoked to save an access token and optionally a refresh token, depending on the grant type.
          *
          */
-        saveToken(token: Token, client: Client, user: User): Promise<Token | Falsey>;
+        saveToken(token: Omit<Token, 'client' | 'user'>, client: Client, user: User): Promise<Token | Falsey>;
     }
 
     interface RequestAuthenticationModel {
@@ -464,6 +464,11 @@ declare namespace OAuth2Server {
          * A human-readable error message.
          */
         message: string;
+
+        /**
+         * The original error, present when this error was constructed by wrapping another `Error`.
+         */
+        inner?: Error;
     }
 
     class AccessDeniedError extends OAuthError {}