• Sign up for PubNub
• Sign up for Amazon AWS
• Run ChatEngine Setup
• Get AWS access and secret keys for Comprehend guide here
• Go to the PubNub Functions event handlers in the admin portal
• Add an On Request event handler (+ tab) and paste comprehend-pfunc.js contents into the editor
• To the left of the editor, click MY SECRETS and add AWS_access_key and AWS_access_key
• Click COPY URL and paste it in app.js as comprehendFunctionURI variable
• Copy the Publish and Subscribe keys for the app from the admin portal
• Paste them at the top of app.js
• Install https://www.npmjs.com/package/http-server or something similar and boot a new server from the root folder of this project
• http-server

There is a colored bubble based on the message sentiment analysis. Green for positive, grey for neutral, red for negative.

Uncomment under the UNCOMMENT lines in app.js to see ChatEngine features like

• Chat History
• Typing Indicator Plugin
• Markdown Plugin