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.

What are is-observable's main functionalities?

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({})); // false

Other packages similar to is-observable

Readme

Source

is-observable

Check if a value is an Observable

Install

$ npm install is-observable

Usage

const isObservable = require('is-observable');

isObservable(Observable.of(1, 2));
//=> true

observable-to-promise - Convert an Observable to a Promise

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Last updated on 02 Aug 2020

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