chokidar-socket-emitter doesn't expect any data for package.json emit

Author: capaj

hot-reloader.js

@@ -34,7 +34,7 @@ class HotReloader extends Emitter {
     this.socket.on('connect', () => {
       d('hot reload connected to watcher on ', backendUrl)
       this.socket.emit('identification', navigator.userAgent)
-      this.socket.emit('package.json', null, function (pjson) {
+      this.socket.emit('package.json', function (pjson) {
         // self.pjson = pjson // maybe needed in the future?
         self.jspmConfigFile = pjson.jspm.configFile || 'config.js'
       })