Amazon Comprehend ChatEngine demo snippet

app.js

// Be sure to replace strings with your own App's Publish & Subscribe keys
// Also replace the REST endpoint with your own On Request handler
var userPubKey = '__PUBNUB_PUBLISH_KEY__';
var userSubKey = '__PUBNUB_SUBSCRIBE_KEY__';
var comprehendFunctionURI = 'https://pubsub.pubnub.com/v1/blocks/sub-key/__SUB_KEY__/__URI__';