handle empty message (ping) in ws

app/javascript/flavours/glitch/util/stream.js

@@ -85,7 +85,10 @@ export default function getStream(streamingAPIBaseURL, accessToken, stream, { co
     const ws = new WebSocketClient(`${streamingAPIBaseURL}/api/v1/streaming/?${params.join('&')}`, accessToken);
 
     ws.onopen      = connected;
-    ws.onmessage   = e => received(JSON.parse(e.data));
+    ws.onmessage   = e => {
+      if (e.data !== '')
+        received(JSON.parse(e.data));
+    };
     ws.onclose     = disconnected;
     ws.onreconnect = reconnected;
 

app/javascript/mastodon/stream.js

@@ -85,7 +85,10 @@ export default function getStream(streamingAPIBaseURL, accessToken, stream, { co
     const ws = new WebSocketClient(`${streamingAPIBaseURL}/api/v1/streaming/?${params.join('&')}`, accessToken);
 
     ws.onopen      = connected;
-    ws.onmessage   = e => received(JSON.parse(e.data));
+    ws.onmessage   = e => {
+      if (e.data !== '')
+        received(JSON.parse(e.data));
+    };
     ws.onclose     = disconnected;
     ws.onreconnect = reconnected;