how to use the notification function from the rxjs library in javascript

To use the notification function from the rxjs library in JavaScript, you need to import it from the RxJS library. Once you have done that, you can use it to create notifications that can be observed.

Here's an example of how to use the notification function to create a simple notification:

index.tsx
const { Notification, NotificationKind } = require('rxjs');

const notification = new Notification(NotificationKind.Next, 'Hello, world!');

console.log(notification);
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In this example, we are creating a new notification using the Notification constructor and passing it two arguments: the notification type (in this case, NotificationKind.Next), and the notification message ('Hello, world!').

Once we have created the notification, we can log it to the console to see its contents.

You can also use notification function to create other types of notifications, such as error or completion notifications:

index.tsx
const { Notification, NotificationKind } = require('rxjs');

const errorNotification = new Notification(NotificationKind.Error, new Error('Something went wrong!'));

console.error(errorNotification);

const completionNotification = new Notification(NotificationKind.Complete);

console.log(completionNotification);
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In this example, we are creating an error notification using the Notification constructor and passing it an Error object as the notification message. We are then logging this error notification to the console using console.error().

We are also creating a completion notification using the Notification constructor and passing it no arguments. We are logging this completion notification to the console using console.log().