From 7e2e392ecc72ea540c38f78a581f1c1f4c0f5b7e Mon Sep 17 00:00:00 2001
From: Olaf Tomalka <olaf@tomalka.me>
Date: Mon, 25 Dec 2017 15:28:41 +0100
Subject: Made the callback in filter.stopWatching optional

---
 packages/web3-typescript-typings/index.d.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/web3-typescript-typings/index.d.ts b/packages/web3-typescript-typings/index.d.ts
index 93e097ed3..677ed3e96 100644
--- a/packages/web3-typescript-typings/index.d.ts
+++ b/packages/web3-typescript-typings/index.d.ts
@@ -131,7 +131,7 @@ declare module 'web3' {
         interface FilterResult {
             get(callback: () => void): void;
             watch(callback: (err: Error, result: LogEntryEvent) => void): void;
-            stopWatching(callback: () => void): void;
+            stopWatching(callback?: () => void): void;
         }
 
         export interface JSONRPCRequestPayload {
-- 
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