is-observable
Advanced tools
Package description
The is-observable package is used to check if a value is an RxJS Observable. RxJS Observables are a core part of reactive programming, which involves working with asynchronous data streams. This package provides a simple utility function to determine if a given object conforms to the Observable contract.
Check if a value is an Observable
This feature allows developers to verify if a particular value is an RxJS Observable. This is useful in scenarios where type checking is necessary before performing operations on the value assumed to be an Observable.
const isObservable = require('is-observable');
const { Observable } = require('rxjs');
const obs = new Observable(subscriber => {
subscriber.next('Hello World');
subscriber.complete();
});
console.log(isObservable(obs)); // true
console.log(isObservable({})); // falseRxJS is a comprehensive library for reactive programming using Observables. It not only provides the Observable class but also a wide array of operators for composing asynchronous and event-based programs. Compared to is-observable, RxJS is much more extensive, offering creation, transformation, filtering, and combination capabilities for Observables.
Zen Observable is a lightweight implementation of Observables. It provides the basic Observable functionality along with some utilities for creating and working with Observables. Unlike is-observable, which only checks if a value is an Observable, zen-observable allows for the creation and manipulation of Observables.
Readme
Check if a value is an Observable
$ npm install is-observable
const isObservable = require('is-observable');
isObservable(Observable.of(1, 2));
//=> true
MIT © Sindre Sorhus
FAQs
Check if a value is an Observable
We found that is-observable demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
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.
Application Security
New SEC disclosure rules aim to enforce timely cyber incident reporting, but fear of job loss and inadequate resources lead to significant underreporting.
Security News
The Python Software Foundation has secured a 5-year sponsorship from Fastly that supports PSF's activities and events, most notably the security and reliability of the Python Package Index (PyPI).
Security News
LDAPjs, an LDAP Client and Server API for Node.js, was decommissioned after its maintainer received an abusive email from a user, raising concerns about this form of abuse as a potential attack vector.