how to use the timeinterval function from the rxjs library in javascript

To use the timeInterval function from the RXJS library, you first need to import it:

index.tsx
import { interval } from 'rxjs';

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Then, create an observable using the interval function which will emit values at a specified interval:

index.tsx
const secondsCounter$ = interval(1000); // emits a value every 1000ms (1 second)
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Finally, use the timeInterval function to transform the emitted values into a new object that includes the elapsed time between each emitted value:

index.tsx
secondsCounter$.pipe(
  timeInterval()
).subscribe(console.log);

/* Output:
{value: 0, interval: 1000}
{value: 1, interval: 1000}
{value: 2, interval: 1000}
...
*/
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In the resulting output, each emitted value is an object with two properties:

• value: The actual value emitted by the observable.
• interval: The elapsed time between the current and previous emitted values.

This is just one example of how you can use the timeInterval function, but it is a powerful tool when working with reactive programming in JavaScript.