feat: added noop method unref to Socket (#1612)

zenlor · paulmelnikow · commit a75f49f1353c · 2019-07-09T12:54:11.000-04:00
it has been implemented in node.js 0.9.1 but it's seldomly used. ref: https://nodejs.org/api/net.html#net_socket_unref
diff --git a/lib/socket.js b/lib/socket.js
@@ -26,6 +26,7 @@ function Socket(options) {
   this.setNoDelay = noop
   this.setKeepAlive = noop
   this.resume = noop
+  this.unref = noop
 
   // totalDelay that has already been applied to the current
   // request/connection, timeout error will be generated if
