From 472e5b07eab180baa12185c8f00e5079ce4c671f Mon Sep 17 00:00:00 2001
From: Richard Moore <github@ricmoo.com>
Date: Sun, 3 May 2020 14:18:12 -0400
Subject: [PATCH] Fix WebSocketProvider responses when message result is null
 (#813).

---
 packages/providers/src.ts/websocket-provider.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/providers/src.ts/websocket-provider.ts b/packages/providers/src.ts/websocket-provider.ts
index 256b035784..64bb27a4d4 100644
--- a/packages/providers/src.ts/websocket-provider.ts
+++ b/packages/providers/src.ts/websocket-provider.ts
@@ -77,12 +77,12 @@ export class WebSocketProvider extends JsonRpcProvider {
         this._websocket.onmessage = (messageEvent: { data: string }) => {
             const data = messageEvent.data;
             const result = JSON.parse(data);
-            if (result.id) {
+            if (result.id != null) {
                 const id = String(result.id);
                 const request = this._requests[id];
                 delete this._requests[id];
 
-                if (result.result) {
+                if (result.result !== undefined) {
                     request.callback(null, result.result);
 
                 } else {