Notifier interface

Provides change notifications for an observed subject.

Signature:

export interface Notifier

Properties

Property	Modifiers	Type	Description
subject	`readonly`	any	The object that subscribers will receive notifications for.

Method	Description
notify(args)	Notifies all subscribers, based on the args.
subscribe(subscriber, propertyToWatch)	Subscribes to notification of changes in an object's state.
unsubscribe(subscriber, propertyToUnwatch)	Unsubscribes from notification of changes in an object's state.