How to use the empty function from rx

Find comprehensive JavaScript rx.empty code examples handpicked from public code repositorys.

rx.empty creates an observable sequence with no elements and terminates immediately.

observables.js

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var test = require('assertit')
var Observable = require('rx').Observable
var merz = require('../index')


function success () {
  return Observable.empty()
}


function successValue () {
  return Observable.return([1, 2, 3])

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+ 20 other calls in file

How does rx.empty work?

rx.empty() is a static method in the RxJS library that creates an Observable that immediately completes without emitting any values. This is useful as a placeholder for Observables that may not have any values to emit.

Ai Example

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const { empty } = require("rxjs");

const obs$ = empty();
obs$.subscribe({
  next: () => console.log("This should never be called."),
  complete: () => console.log("Completed."),
});

In this example, we import the empty function from rxjs. We create an observable obs$ using empty(), which immediately completes without emitting any values. We subscribe to the observable and provide an observer object with two methods - next and complete. Since the observable never emits any values, the next method is never called, and the observable immediately completes, calling the complete method and logging "Completed." to the console.

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