added comments & updated TS doc

Author: Bhupesh-mfsi

packages/lib/delivery/src/notifications/broker/NotificationBroker.ts

@@ -50,7 +50,8 @@ export const _setupNotficationBroker = (
 
 /**
  * Creates a notification broker based on the provided notification channels.
- * @param {DeliveryServiceProperties} options - Delivery service properties including notification channels.
+ * @param {NotificationChannel[]} notificationChannel - All notification channels of a delivery service.
+ * @param {NotificationType} notificationType - Specifies type of notifications like : New message , OTP etc..
  * @returns {INotificationBroker} An instance of the notification broker.
  * @throws {Error} If an unsupported channel type is encountered.
  */

packages/lib/delivery/src/notifications/types.ts

@@ -1,10 +1,17 @@
 import { DeliveryInformation } from '@dm3-org/dm3-lib-messaging';
 
 //Every notification channel that is supported by the delivery service must be listed here
+// Notification channel is medium of getting notified. It can be email, phone no. push notification etc...
 export enum NotificationChannelType {
     EMAIL = 'EMAIL',
 }
 
+/**
+ * Notification type describes which kind of notification it is :
+ * 1. New Message
+ * 2. Verification OTP
+ * etc...
+ */
 export enum NotificationType {
     NEW_MESSAGE = 'NEW_MESSAGE',
     OTP = 'OTP',