From 448b80df33285e2b90ff23f1aec9d7aa2284b574 Mon Sep 17 00:00:00 2001
From: Andrej Mihajlov <and.mikhaylov@gmail.com>
Date: Sun, 17 Mar 2019 17:35:32 +0100
Subject: [PATCH] Update index.d.ts

---
 types/opentok/index.d.ts | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/types/opentok/index.d.ts b/types/opentok/index.d.ts
index 85b9794316..58fdfaa7ba 100644
--- a/types/opentok/index.d.ts
+++ b/types/opentok/index.d.ts
@@ -2,6 +2,7 @@
 // Project: https://github.com/opentok/opentok-node
 // Definitions by: Seth Westphal <https://github.com/westy92>
 //                 Anthony Messerschmidt <https://github.com/CatGuardian>
+//                 Andrej Mihajlov <https://github.com/pronebird>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 declare module 'opentok' {
@@ -81,13 +82,13 @@ declare module 'opentok' {
   class OpenTok {
     constructor(apiKey: string, apiSecret: string);
 
-    public createSession(options: OpenTok.SessionOptions, callback: (err: Error, session: OpenTok.Session) => void): void;
+    public createSession(options: OpenTok.SessionOptions, callback: (error: Error | null, session?: OpenTok.Session) => void): void;
     public generateToken(sessionId: string, options: OpenTok.TokenOptions): OpenTok.Token;
-    public startArchive(sessionId: string, options: OpenTok.ArchiveOptions, callback: (err: Error, archive: OpenTok.Archive) => void): void;
-    public stopArchive(archiveId: string, callback: (err: Error, archive: OpenTok.Archive) => void): void;
-    public getArchive(archiveId: string, callback: (err: Error, archive: OpenTok.Archive) => void): void;
-    public deleteArchive(archiveId: string, callback: (err: Error) => void): void;
-    public listArchives(options: OpenTok.ListArchivesOptions, callback: (err: Error, archives: OpenTok.Archive[], totalCount: number) => void): void;
+    public startArchive(sessionId: string, options: OpenTok.ArchiveOptions, callback: (error: Error | null, archive?: OpenTok.Archive) => void): void;
+    public stopArchive(archiveId: string, callback: (error: Error | null, archive?: OpenTok.Archive) => void): void;
+    public getArchive(archiveId: string, callback: (error: Error | null, archive?: OpenTok.Archive) => void): void;
+    public deleteArchive(archiveId: string, callback: (error: Error | null) => void): void;
+    public listArchives(options: OpenTok.ListArchivesOptions, callback: (error: Error | null, archives?: OpenTok.Archive[], totalCount?: number) => void): void;
   }
 
   export = OpenTok;