diff --git a/tutorial/nodejs/NodeClientPromise.js b/tutorial/nodejs/NodeClientPromise.js
index e6ff2d7..0ba5f4f 100644
--- a/tutorial/nodejs/NodeClientPromise.js
+++ b/tutorial/nodejs/NodeClientPromise.js
@@ -17,64 +17,62 @@
  * under the License.
  */
 
-var thrift = require('thrift');
-var Calculator = require('./gen-nodejs/Calculator');
-var ttypes = require('./gen-nodejs/tutorial_types');
-const assert = require('assert');
+var thrift = require("thrift");
+var Calculator = require("./gen-nodejs/Calculator");
+var ttypes = require("./gen-nodejs/tutorial_types");
+const assert = require("assert");
 
 var transport = thrift.TBufferedTransport;
 var protocol = thrift.TBinaryProtocol;
 
 var connection = thrift.createConnection("localhost", 9090, {
-  transport : transport,
-  protocol : protocol
+  transport: transport,
+  protocol: protocol,
 });
 
-connection.on('error', function(err) {
+connection.on("error", function (err) {
   assert(false, err);
 });
 
 // Create a Calculator client with the connection
 var client = thrift.createClient(Calculator, connection);
 
+client.ping().then(function () {
+  console.log("ping()");
+});
 
-client.ping()
-  .then(function() {
-    console.log('ping()');
-  });
-
-client.add(1,1)
-  .then(function(response) {
-	  console.log("1+1=" + response);
-  });
+client.add(1, 1).then(function (response) {
+  console.log("1+1=" + response);
+});
 
 work = new ttypes.Work();
 work.op = ttypes.Operation.DIVIDE;
 work.num1 = 1;
 work.num2 = 0;
 
-client.calculate(1, work)
-  .then(function(message) {
-	console.log('Whoa? You know how to divide by zero?');
+client
+  .calculate(1, work)
+  .then(function (message) {
+    console.log("Whoa? You know how to divide by zero?");
   })
-  .catch(function(err) {
+  .catch(function (err) {
     console.log("InvalidOperation " + err);
   });
 
-
 work.op = ttypes.Operation.SUBTRACT;
 work.num1 = 15;
 work.num2 = 10;
 
-client.calculate(1, work)
-  .then(function(value) {
-	  console.log('15-10=' + value);
-	  return client.getStruct(1);
+client
+  .calculate(1, work)
+  .then(function (value) {
+    console.log("15-10=" + value);
+    return client.getStruct(1);
   })
-  .then(function(message) {
-      console.log('Check log: ' + message.value);
+  .then(function (message) {
+    console.log("Check log: " + message.value);
   })
-  .finally(function() {
-	  //close the connection once we're done
-      connection.end();
+  .finally(function () {
+    //close the connection once we're done
+    connection.end();
   });