@notifierjs/core
v1.1.5
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Zero dependencies platform and framework agnostic engine that helps you build your own notifications system.
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@notifierjs/core
Zero dependencies platform and framework agnostic engine that helps you build your own notifications system.
Table of contents
Installation
Using npm:
npm install @notifierjs/core
Using yarn:
yarn add @notifierjs/core
Usage
Creation
Library exports a single createNotifier
factory function which return to you instance of
Notifier
interface.
import { createNotifier } from '@notifierjs/core';
const notifier = createNotifier();
Optionally you can pass some options to it(you can view list of all available options here):
import { createNotifier } from '@notifierjs/core';
const notifier = createNotifier({ autoRemoveTimeout: 7000 });
Subscription
Then you should subscribe to the two main notifier
events: add
and remove
const addListener = () => {
// some `add` logic here
};
const removeListener = () => {
// some `remove` logic here
};
notifier.subscribe('add', addListener);
notifier.subscribe('remove', removeListener);
This listeners will called whenever add
or remove
event happened.
If you want to cancel subscription subscribe
method return disposer
function.
const addListener = () => {
// some `add` logic here
};
const dispose = notifier.subscribe('add', addListener);
// when you don't need `add` event listener anymore
dispose();
Add notification
To add notification you simply call add
method and pass notification config:
notifier.add({ id: nanoid(), payload: { titile: 'Notification', body: 'Hello world!' } });
This will trigger add
event and all its event listeners will be executed.
When you add notification it will appear on the notifications
property
with the folowing properties:
id
- id that you passed to notification inadd
methodpayload
- payload that you passed to notification inadd
methodoptions
- options that are specific to this particular notificationinfo
- additional data about your notification, contains a countdown timer for removing your notification if the following options were passed to the factory function or the notification option in theadd
method:autoRemove: true
andautoRemoveTimeout
with any number.
Remove notification
Usually, notifications have the autoRemove
option set to true
as well
as autoRemoveTimeout
, but if you wanna manually remove some
notification use remove
method and pass notification id to it:
const notification = { id: nanoid(), payload: { titile: 'Notification', body: 'Hello world!' } };
notifier.add(notification);
// if you wanna to manually remove this notification
notifier.remove(notification.id);
Remove notification(automatically or manually) will trigger remove
event.
Queue
If the number of added notifications exceeds the number that was specified in the option
size
when creating the instance, then they will be added to the queue. You can manage
size of the displayed notifications by passed size
option to factory function or
setOptions
method.
import { createNotifier } from '@notifierjs/core';
const notifier = createNotifier({ size: 3 });
notifier.add(notification1);
notifier.notifications.length; // 1
notifier.add(notification2);
notifier.notifications.length; // 2
notifier.add(notification3);
notifier.notifications.length; // 3
notifier.add(notification4);
// `notification4` will be added to queue
notifier.notifications.length; // 3
Or by calling setOptions
method on the
Notifier
instance
import { createNotifier } from '@notifierjs/core';
const notifier = createNotifier();
notifier.setOptions({ size: 3 });
notifier.add(notification1);
notifier.notifications.length; // 1
notifier.add(notification2);
notifier.notifications.length; // 2
notifier.add(notification3);
notifier.notifications.length; // 3
notifier.add(notification4);
// `notification4` will be added to queue
notifier.notifications.length; // 3
Options
createNotifier
factory function can take the following options:
autoRemove
Determines whether the added notification should be removed automatically.
| Type | Required | Default |
| --------- | -------- | ------- |
| boolean
| no | true
|
autoRemoveTimeout
Determines after what time(in milliseconds) the notification should be removed automatically.
| Type | Required | Default |
| -------- | -------- | ------- |
| number
| no | 5000
|
size
Determines how many notifications can be displayed.
| Type | Required | Default |
| -------- | -------- | ------- |
| number
| no | 5
|
API
notifications
Contains displayed notifications.
import { createNotifier } from '@notifierjs/core';
const notifier = createNotifier<string>();
notifier.add({ id: 1, payload: 'Notification 1' });
notifier.add({ id: 2, payload: 'Notification 2' });
console.log(notifier.notifications); // [LaunchedNotification<string>, LaunchedNotification<string>]
options
type:
Options
Contains setted options. Read more in options
section.
import { createNotifier } from '@notifierjs/core';
const notifier = createNotifier<string>();
console.log(notifier.options); // { autoRemove: true, autoRemoveTimeout: 5000, size: 5 }
import { createNotifier } from '@notifierjs/core';
const notifier = createNotifier<string>({ autoRemoveTimeout: 7000 });
console.log(notifier.options); // { autoRemove: true, autoRemoveTimeout: 7000, size: 5 }
setOptions
Set options for the current instance.
import { createNotifier } from '@notifierjs/core';
const notifier = createNotifier();
notifier.setOptions({ size: 3 });
notifier.add(notification1);
notifier.notifications.length; // 1
notifier.add(notification2);
notifier.notifications.length; // 2
notifier.add(notification3);
notifier.notifications.length; // 3
notifier.add(notification4);
// `notification4` will be added to queue
notifier.notifications.length; // 3
add
Add notification.
import { createNotifier } from '@notifierjs/core';
const notifier = createNotifier<string>();
notifier.notifications.length; // 0
notifier.add({ id: 1, payload: 'Notification 1' });
notifier.notifications.length; // 1
remove
Remove notification.
import { createNotifier } from '@notifierjs/core';
const notifier = createNotifier<string>();
notifier.notifications.length; // 0
notifier.add({ id: 1, payload: 'Notification 1' });
notifier.notifications.length; // 1
notifier.remove(1);
notifier.notifications.length; // 0
subscribe
type:
(event: NotificationEvent, handler: Handler) => Disposer
Subscribe to notifier events. Return disposer function to unsubscribe from event.
import { createNotifier } from '@notifierjs/core';
const notifier = createNotifier<string>();
notifier.subscribe('add', () => {
console.log('add event triggered!');
});
notifier.subscribe('remove', () => {
console.log('remove event triggered!');
});
notifier.add({ id: 1, payload: 'Notification 1' });
// 'add event triggered!'
notifier.remove(1);
// 'remove event triggered!'
import { createNotifier } from '@notifierjs/core';
const notifier = createNotifier<string>();
const unsubscribe = notifier.subscribe('add', () => {
console.log('add event triggered!');
});
notifier.add({ id: 1, payload: 'Notification 1' });
// 'add event triggered!'
unsubscribe();
notifier.add({ id: 2, payload: 'Notification 2' });
// nothing will be displayed in console
Maintaining
Scripts
List of available scripts to run:
build
— build librarytypecheck
— run typescript to check typestest
— run all teststest:watch
— run all tests inwatch
modetest:coverage
— run all tests with code coverage output