Chatbot Overview
Conversational Bots
Intents & Entities
Intelligent Bots's Approach Conversational Platform
Bot Concepts and Terminology
Natural Language Processing (NLP)
Bot Types
Bot Tasks
Starting with Platform
How to Access Bot Builder
Working with Bot Builder
Building your first Bot
Getting Started with Building Bots
Using the Dialog Builder Tool
Creating a Simple Bot
Release Notes
Latest Updates
Older Releases
Bot Builder
Creating a Bot
Dialog Task
User Intent Node
Dialog Node
Entity Node
Supported Entity Types
Composite Entities
Supported Time Zones
Supported Colors
Supported Company Names
Form Node
Logic Node
Message Nodes
Confirmation Nodes
Service Node
Custom Authentication
2-way SSL for Service nodes
Script Node
Agent Transfer Node
WebHook Node
Grouping Nodes
Connections & Transitions
Managing Dialogs
User Prompts
Alert Tasks
Alert Tasks
Ignore Words and Field Memory
Digital Forms
Digital Views
Knowledge Graph
Importing and Exporting
Knowledge Extraction
Small Talk
Action & Information Task
Action Tasks
Information Tasks
Establishing Flows
Natural Language
Machine Learning
ML Model
Fundamental Meaning
NLP Settings and Guidelines
Knowledge Graph Training
Ranking and Resolver
NLP Detection
Advanced NLP Configurations
Bot Intelligence
Context Management
Session and Context Variables
Context Object
Dialog Management
Amend Entity
Multi-Intent Detection
Sentiment Management
Tone Analysis
Sentiment Management
Default Conversations
Default Standard Responses
Channel Enablement
Test & Debug
Talk to Bot
Utterance Testing
Batch Testing
Record Conversations
Publishing your Bot
Analyzing your Bot
Custom Dashboard
Conversation Flows
Bot Metrics
Advanced Topics
Bot Authorization
Language Management
Collaborative Development
IVR Integration
Data Table
Universal Bots
Enabling Languages
Smart Bots
Sample Bots
Travel Planning
Flight Search
Event Based Bot Actions
koreUtil Libraries
Bot Settings
Bot Functions
General Settings
PII Settings
Customizing Error Messages
Manage Sessions
Bot Management
Bot Versioning
Using Bot Variables
API Guide
API Overview
API List
API Collection
SDK Overview
SDK Security
SDK App Registration
Web SDK Tutorial
Message Formatting and Templates
Mobile SDK Push Notification
Widget SDK Tutorial
Widget SDK – Message Formatting and Templates
Web Socket Connect & RTM
Using the BotKit SDK
BotKit SDK Tutorial – Agent Transfer
BotKit SDK Tutorial – Flight Search Sample Bot
Using an External NLP Engine
Bot Administration
Bots Admin Console
User Management
Managing Users
Managing Groups
Managing Role
Bots Management
Inviting Users
Bulk Invites
Importing Users
Synchronizing Users from AD
Security & Compliance
Using Single Sign-On
Security Settings
Cloud Connector
How Tos
Creating a Simple Bot
Creating a Banking Bot
Transfer Funds Task
Update Balance Task
Context Switching
Using Traits
Schedule a Smart Alert
Configure Digital Forms
Add Form Data into Data Tables
Configuring Digital Views
Add Data to Data Tables
Update Data in Data Tables
Custom Dashboard
Custom Tags to filter Bot Metrics
Patterns for Intents & Entities
Build Knowledge Graph
Global Variables
Content Variables
Using Bot Functions
Configure Agent Transfer
  1. Home
  2. Docs
  3. Bots
  4. Advanced Topics
  5. koreUtil Libraries

koreUtil Libraries

koreUtil libraries provide pre-written JavaScript functions which makes common or complex tasks easy to implement. These libraries often target specific tasks such as setting up recurring rules for calendar, parsing and manipulation of dates, conversion of dates between timezone, tools to simplify programming with strings, numbers, arrays, functions and objects etc.

How to Use

koreUtil libraries can be used anywhere in the bot where there is a flexibility to write JavaScript code such as script node, message node, confirmation node, entity node, standard responses, answers to FAQs, small talk, event handlers etc.

List of koreUtil libraries

Below is the list of koreUtil libraries provided by the platform:


koreUtil.rrule is platform offered JS library for creating new recurrence rules, interpreting and reading them in human readable format. This library is backed by rrule npm module version 2.2.0 installed on server. For more details on using rrule refer here.

Usage Example:
context.rule = new koreUtil.rrule({
freq: koreUtil.rrule.WEEKLY,
interval: 5,
byweekday: [koreUtil.rrule.MO, koreUtil.rrule.FR],
dtstart: new Date(2012, 1, 1, 10, 30),
until: new Date(2012, 12, 31)

context.between=context.rule.between(new Date(2012, 7, 1), new Date(2012, 8, 1));


  • For context.between
  • For context.readableFormat
    every 5 weeks on Monday, Friday until January 31, 2013


koreUtil.moment is platform offered JS library for validating, manipulating, and formatting dates. This library is backed by moment npm module version 2.19.2 installed on server. For more details on using moment refer here.

Usage Example:

For context.german:
Montag, 18. November 2019 01:43


koreUtil.intl is platform offered JS library for language specific string comparison, number formatting, and date and time formatting. This library is backed by intl npm module version 1.2.5 installed on server. For more details on using intl refer here.

Usage Example:
context.formattedNumberUK = koreUtil.intl.NumberFormat('en-GB').format(123456.789);
var date = new Date(Date.UTC(2012, 11, 20, 3, 0, 0));


  • For context.formattedNumberUK:
  • For context.USdate


koreUtil.momenttz is platform offered JS library for formatting of dates in any timezone and convert dates between timezones. This library is backed by moment-timezone npm module version 0.4.1 installed on server is 0.4.1. For more details on using momenttz refer here.

Usage Example:
var jun = koreUtil.moment("2014-06-01T12:00:00Z");
context.newyork= koreUtil.momenttz(jun,'America/New_York').format('ha z'); = koreUtil.moment().tz('Asia/Tokyo').format('ha z'); = koreUtil.moment().tz('Australia/Sydney').format('ha z');


  • For context.newyork:
    5am PDT
  • For
    7pm JST
  • For
    9pm AEDT


koreUtil.xml2js is platform offered JS library for parsing xml to json and vice versa. This library is backed by xml2js npm version 0.4.19 installed on server. More details on using xml2js refer here.

Usage Example:
var obj = {name: "John", Surname: "Doe", age: 23};
var builder = new koreUtil.xml2js.Builder();
context.xml = builder.buildObject(obj);


  • For context.xml:
    John Doe 23


koreUtil.hash is platform offered JS library that supports SHA on JavaScript. The library is backed by sha.js npm module version 2.4.9 installed on server. For more details refer here.

Usage Example:
context.hashString= koreUtil.hash('sha256').update('42').digest('hex');


  • For context.hashString:


koreUtil._ is a platform offered JS library which provides utility functions for common programming tasks. This library is backed by lodash.js npm module version 3.10.1 installed on server. For more details refer here.

Usage Example:
context.chunkArray = koreUtil._.chunk(['a', 'b', 'c', 'd'], 2);
var users = [
{ 'user': 'barney', 'age': 36, 'active': true },
{ 'user': 'fred', 'age': 40, 'active': false }
context.filterActive =koreUtil._.pluck(koreUtil._.filter(users, { 'age': 36, 'active': true }), 'user');


  • For context.chunkArray:
  • For context.filterActive:


koreUtil.getCurrentOptions is a platform offered JS library which provides utility functions to get the current template for language selection standard response options. This can be used to customize the standard response. Following is the return format for each of the situations:

  • For the language selection standard response:
    {"list_of_languages": [
       {"title": "English","value": "English"},
       {"title": "Deutsche","value": "Deutsche"},
       {"title": "Español","value": "Español"}
  • For the language ambiguity standard response:
    {"current_language": "Español",
          "list_of_new_languages": [
             {"title": "English","value": "English"},
             {"title": "Deutsche","value": "Deutsche"},
             {"title": "Español","value": "Español"}
  • For the language switch standard response:
    {"new_language": "Español","current_language": "English"}

Following are the usage examples of how the above utility can be used to render the message in a button template, you can use any template as per your requirements.  See here for more on message templates.

Usage Example 1: To get the standard response for “Ask if the user would like to select any of the languages

var info = koreUtil.getCurrentOptions();
var message = {
  "type": "template",
  "payload": {
    "template_type": "button",
    "text": "please select your laguage",
    "subText": "Button Template Description",
    "buttons": []
for (i = 0; i < info.list_of_languages.length; i++) {
  var button = {
    "type": "postback",
    "title": info.list_of_languages[i].title,
    "payload": info.list_of_languages[i].value


Usage Example 2: To get the standard response for “Ask if the user would like to switch to any of the new languages detected during a conversation

var info = koreUtil.getCurrentOptions();
var message = {
    "type": "template",
    "payload": {
        "template_type": "button",
        "text": "language abiguity response for the current language" + info.current_language,
        "subText": "Button Template Description",
        "buttons": []
for (i = 0; i < info.list_of_new_languages.length; i++) {
    var button = {
        "type": "postback",
        "title": info.list_of_new_languages[i].title,
        "payload": info.list_of_new_languages[i].value


Usage Example 3: To get the standard response for “Ask if the user would like to switch to any of the new languages detected during a conversation

var info = koreUtil.getCurrentOptions();
var message = {
    "type": "template",
    "payload": {
        "template_type": "button",
        "text": "would you like to switch to new language detected: current language " + info.current_language + "new language : " + info.new_language,
        "subText": "Button Template Description",
        "buttons": []
var options = ["yes", "no"]
for (i = 0; i < options.length; i++) {
    var button = {
        "type": "postback",
        "title": options[i],
        "payload": options[i]


koreUtil.getSessionId is a platform offered JS library for obtaining the current conversation session Id.

Usage Example:
var sessionId = koreUtil.getSessionId();


  • For sessionId: