From cd8712b0a5afb315123608aa6bd6108677dcd8e2 Mon Sep 17 00:00:00 2001
From: Tanguy Krotoff <tkrotoff@gmail.com>
Date: Wed, 14 Dec 2016 01:49:51 +0100
Subject: [PATCH] Fix TypeScript error

---
 whatwg-streams/index.d.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/whatwg-streams/index.d.ts b/whatwg-streams/index.d.ts
index 45e33f40c3..79560b009a 100644
--- a/whatwg-streams/index.d.ts
+++ b/whatwg-streams/index.d.ts
@@ -95,7 +95,7 @@ declare class ReadableStreamBYOBRequest {
 
 interface WritableStreamSink {
     start?(controller: WritableStreamDefaultController): void | Promise<void>;
-    write?(chunk: any, controller: WritableStreamDefaultController): void | Promise<void>;
+    write?(chunk: any, controller?: WritableStreamDefaultController): void | Promise<any>;
     close?(controller: WritableStreamDefaultController): void | Promise<void>;
     abort?(reason: string): void | Promise<void>;
 }