What is the takeUntil operator in RxJS?

Can you explain what the takeUntil operator does in RxJS?

Sure! The takeUntil operator in RxJS allows you to emit values from an observable until a second observable emits a value.

How is it different from takeWhile?

The takeWhile operator continues to emit values as long as a specified condition is true, while takeUntil stops emitting when the second observable emits.

Can you give me a code example of how to use takeUntil?

Absolutely! Here's a simple example:

import { interval, Subject } from 'rxjs';
import { takeUntil } from 'rxjs/operators';

const source = interval(1000);
const stop = new Subject();

source.pipe(takeUntil(stop)).subscribe(value => {
  console.log(value);
});

setTimeout(() => stop.next(), 5000); // Stops after 5 seconds