@types/zen-observable

What is @types/zen-observable?

The @types/zen-observable package provides TypeScript type definitions for the zen-observable library, which is an implementation of Observables for JavaScript. These type definitions allow TypeScript developers to use zen-observable in their projects with the benefits of type checking and IntelliSense support in their code editors.

What are @types/zen-observable's main functionalities?

Creating an Observable

This feature allows the creation of an Observable that can emit values to its subscribers. The code sample demonstrates how to create a simple Observable that emits a single value and then completes.

import Observable from 'zen-observable';

const observable = new Observable(observer => {
  observer.next('Hello');
  observer.complete();
});

Subscribing to an Observable

This feature allows subscribing to an Observable to receive emitted values, errors, or a completion signal. The code sample shows how to subscribe to an Observable and provide handlers for the next, error, and complete events.

import Observable from 'zen-observable';

const observable = new Observable(observer => {
  setTimeout(() => {
    observer.next('Hello');
    observer.complete();
  }, 1000);
});

const subscription = observable.subscribe({
  next(value) { console.log(value); },
  error(err) { console.error('Something wrong occurred: ' + err); },
  complete() { console.log('Done'); }
});

Unsubscribing from an Observable

This feature allows unsubscribing from an Observable to stop receiving emitted values and to run any teardown logic defined in the Observable. The code sample demonstrates how to unsubscribe from an Observable after a certain period.

import Observable from 'zen-observable';

const observable = new Observable(observer => {
  const intervalId = setInterval(() => {
    observer.next('tick');
  }, 1000);

  // Teardown logic for the subscription
  return () => clearInterval(intervalId);
});

const subscription = observable.subscribe(value => console.log(value));

// Unsubscribe after 5 seconds
setTimeout(() => {
  subscription.unsubscribe();
}, 5000);

Other packages similar to @types/zen-observable

rxjs

RxJS is a library for reactive programming using Observables, to make it easier to compose asynchronous or callback-based code. It is more feature-rich than zen-observable, providing a wide range of operators for manipulating streams of data, error handling, and more advanced functionality.

most

Most.js is a high-performance reactive programming library. It focuses on providing a smaller, faster, and highly composable Observable implementation. Compared to zen-observable, most.js is designed for high-demand real-time applications.

xstream

XStream is a library for building asynchronous and event-based programs using observable streams. It is designed to be more approachable and easier to use than some other stream libraries, with a focus on simplicity over a large number of operators. It is similar to zen-observable but with a different API and set of features.

README

Installation

npm install --save @types/zen-observable

Summary

This package contains type definitions for zen-observable (https://github.com/zenparsing/zen-observable).

Details

Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/zen-observable.

Additional Details

• Last updated: Wed, 22 Nov 2023 00:24:48 GMT
• Dependencies: none

Credits

These definitions were written by Kombu, JounQin, Thomas, and BenoitZugmeyer.