Merge pull request #4461 from samalbert/feature/zmq_callback_buffer

Updated callback to support indefinite number of buffer params

node_zeromq/zmq-tests.ts

@@ -19,7 +19,7 @@ function test3() {
     var sock = zmq.socket('push');
     sock.bindSync('tcp://127.0.0.1:3000');
     sock.send(['hello', 'world']);
-    sock.on('message', function (buffer: Buffer) {
+    sock.on('message', function (buffer1: Buffer, buffer2: Buffer) {
         //
     });
 }

node_zeromq/zmq.d.ts

@@ -182,7 +182,7 @@ declare module 'zmq' {
          * @param eventName {string}
          * @param callback {Function}
          */
-        on(eventName: string, callback: (buffer: Buffer) => void): void;
+        on(eventName: string, callback: (...buffer: Buffer[]) => void): void;
 
         // Socket Options
         _fd: any;