Update sender.js

Author: tsctx

lib/web/websocket/sender.js

@@ -89,7 +89,7 @@ function createFrame (data, hint) {
 function toBuffer (data, hint) {
   switch (hint) {
     case sendHints.string:
-      return typeof data === 'string' ? Buffer.from(data) : data
+      return typeof data === 'string' ? Buffer.from(data) : new Uint8Array(data.buffer, data.byteOffset, data.byteLength)
     case sendHints.arrayBuffer:
     case sendHints.blob:
       return new Uint8Array(data)