run-notifier
Allows you to notify listeners.
Install with npm:
npm:
npm install run-notifier --saveHow to use
import {Notifier} from "run-notifier";
const listener1 = (params: string) => console.log('listener 1.', params);
const listener2 = (params: string) => console.log('listener 2.', params);
const notifier: Notifier<string> = new Notifier();
notifier.addListener(listener1);
notifier.addListener(listener2);
notifier.signal('test A');
// console --->>> listener 1. test A
// console --->>> listener 2. test A
notifier.removeListener(listener1);
notifier.removeListener(listener2);
// or
notifier.addListener('listener1', listener1);
notifier.addListener('listener2', listener2);
notifier.signal('test B');
// console --->>> listener 1. test B
// console --->>> listener 2. test B
notifier.removeListener('listener1');
notifier.removeListener('listener2');
// or
notifier.addListener('listener1', listener2);
notifier.addListener('listener1', listener1); // replace listener with same key
notifier.addListener('listener2', listener2);
notifier.signal('test C');
// console --->>> listener 1. test C
// console --->>> listener 2. test C
notifier.removeListener('listener1');
notifier.removeListener('listener2');Doc
/**
* Notifier. Allows you to notify listeners.
*/
class Notifier<Params> {
/**
* Called before adding the first notification listener.
* Used to initialize any activity in inheritor.
*/
protected onStart(): void;
/**
* Called after removing the last notification listener.
* Used to finalize any activity in inheritor.
*/
protected onStop(): void;
/**
* Add notification listener.
*
* @param listener Listener;
* @param notice Handler. Called on listener notification;
* @param extra Additional arguments.
*/
public addListener(listener: NotifierListener<Params>, notice?: NotifierNotice<Params>, ...extra: any): void;
/**
* Remove all notification listeners.
*/
public clear(): void;
/**
* Remove notification listener.
*
* @param listener Listener.
*/
public removeListener(listener: NotifierListener<Params>): void;
/**
* Notify listeners.
*
* @param params Notification parameters.
*/
public signal(params: Params): void;
}License
MIT. Copyright (c) 2021 Vitaliy Dyukar.