Huge News!Announcing our $40M Series B led by Abstract Ventures.Learn More
Socket
Sign inDemoInstall
Socket

symbol-observable

Package Overview
Dependencies
Maintainers
1
Versions
19
Alerts
File Explorer

Advanced tools

Socket logo

Install Socket

Detect and block malicious and high-risk dependencies

Install

symbol-observable

Symbol.observable ponyfill

  • 0.2.4
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
14M
increased by5%
Maintainers
1
Weekly downloads
 
Created

What is symbol-observable?

The symbol-observable package is primarily used to polyfill the Observable symbol, which is a proposed addition to the ECMAScript standard. It allows JavaScript objects to be observable, meaning that other objects can subscribe to them and react to changes. This is particularly useful in reactive programming models and libraries, such as RxJS, where data streams and their transformations are a core concept.

What are symbol-observable's main functionalities?

Polyfill for Observable Symbol

This code demonstrates how to use the symbol-observable package to make an object observable. It defines a simple observable that emits 'hi' every second. An observer subscribes to this observable to log the emitted values. This showcases how symbol-observable can be used to implement the observer pattern in JavaScript.

"use strict";

const symbolObservable = require('symbol-observable').default;

console.log(typeof symbolObservable); // 'symbol' in environments with native Symbol support

const obj = {};
obj[symbolObservable] = function () {
  return {
    subscribe(observer) {
      const intervalID = setInterval(() => observer.next('hi'), 1000);

      return {
        unsubscribe() {
          clearInterval(intervalID);
        }
      };
    }
  };
};

const observable = obj[symbolObservable]();
const subscription = observable.subscribe({
  next(val) { console.log(val); },
  complete() { console.log('Done'); }
});

// Later:
// subscription.unsubscribe();

Other packages similar to symbol-observable

Keywords

FAQs

Package last updated on 25 Apr 2016

Did you know?

Socket

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Install

Related posts

SocketSocket SOC 2 Logo

Product

  • Package Alerts
  • Integrations
  • Docs
  • Pricing
  • FAQ
  • Roadmap
  • Changelog

Packages

npm

Stay in touch

Get open source security insights delivered straight into your inbox.


  • Terms
  • Privacy
  • Security

Made with ⚡️ by Socket Inc