fix: Update dependencies and node-sdk

.travis.yml

@@ -1,7 +1,6 @@
 language: node_js
-dist: trusty
 sudo: required
-node_js: 8
+node_js: 12
 services:
   - docker
 script:
@@ -22,16 +21,11 @@ before_deploy:
   - npm install -g bx-blue-green
 deploy:
 - provider: script
-  script:
-    - bx-blue-green-travis
+  script: bx-blue-green-travis
   on:
     branch: master
     repo: watson-developer-cloud/tone-analyzer-nodejs
   skip_cleanup: true
 - provider: script
   skip_cleanup: true
   script: npx semantic-release
-  on:
-    node: 8
-    branch: master
-    repo: watson-developer-cloud/tone-analyzer-nodejs

app.js

@@ -18,34 +18,33 @@
 
 require('dotenv').config({silent: true});
 
-var express = require('express');
-var app = express();
-var ToneAnalyzerV3 = require('ibm-watson/tone-analyzer/v3');
+const express = require('express');
+const app = express();
+const ToneAnalyzerV3 = require('ibm-watson/tone-analyzer/v3');
+const { IamAuthenticator } = require('ibm-watson/auth');
+
+const toneAnalyzer = new ToneAnalyzerV3({
+  version: '2019-10-10',
+  authenticator: new IamAuthenticator({
+    apikey: process.env.TONE_ANALYZER_IAM_APIKEY || 'type-key-here',
+  }),
+  url: process.env.TONE_ANALYZER_URL,
+});
 
 // Bootstrap application settings
 require('./config/express')(app);
 
-// Create the service wrapper
-var toneAnalyzer = new ToneAnalyzerV3({
-  // If unspecified here, the TONE_ANALYZER_USERNAME and TONE_ANALYZER_PASSWORD environment properties will be checked
-  // or TONE_ANALYZER_IAM_APIKEY if is available
-  // After that, the SDK will fall back to the bluemix-provided VCAP_SERVICES environment property
-  // username: '<username>',
-  // password: '<password>',
-  version: '2017-09-21'
-});
-
 app.get('/', function(req, res) {
   res.render('index');
 });
 
-app.post('/api/tone', function(req, res, next) {
-  toneAnalyzer.tone(req.body, function(err, data) {
-    if (err) {
-      return next(err);
-    }
-    return res.json(data);
-  });
+app.post('/api/tone', async function(req, res, next) {
+  try {
+    const { result } = await toneAnalyzer.tone(req.body);
+    res.json(result);
+  } catch (error) {
+    next(error);
+  }
 });
 
 // error-handler application settings

config/error-handler.js

@@ -1,15 +1,15 @@
 module.exports = function(app) {
   // catch 404 and forward to error handler
   app.use(function(req, res, next) {
-    var err = new Error('Not Found');
+    const err = new Error('Not Found');
     err.code = 404;
     err.message = `Path: ${req.path}, not Found`;
     next(err);
   });
 
   // error handler
   app.use(function(err, req, res, next) {
-    var error = {
+    const error = {
       code: err.code || 500,
       error: err.error || err.message
     };