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- import { Observable } from '../Observable';
- import { SchedulerLike } from '../types';
- /**
- * Creates an Observable that emits sequential numbers every specified
- * interval of time, on a specified {@link SchedulerLike}.
- *
- * <span class="informal">Emits incremental numbers periodically in time.</span>
- *
- * 
- *
- * `interval` returns an Observable that emits an infinite sequence of
- * ascending integers, with a constant interval of time of your choosing
- * between those emissions. The first emission is not sent immediately, but
- * only after the first period has passed. By default, this operator uses the
- * `async` {@link SchedulerLike} to provide a notion of time, but you may pass any
- * {@link SchedulerLike} to it.
- *
- * ## Example
- *
- * Emits ascending numbers, one every second (1000ms) up to the number 3
- *
- * ```ts
- * import { interval, take } from 'rxjs';
- *
- * const numbers = interval(1000);
- *
- * const takeFourNumbers = numbers.pipe(take(4));
- *
- * takeFourNumbers.subscribe(x => console.log('Next: ', x));
- *
- * // Logs:
- * // Next: 0
- * // Next: 1
- * // Next: 2
- * // Next: 3
- * ```
- *
- * @see {@link timer}
- * @see {@link delay}
- *
- * @param period The interval size in milliseconds (by default) or the time unit determined
- * by the scheduler's clock.
- * @param scheduler The {@link SchedulerLike} to use for scheduling the emission of values,
- * and providing a notion of "time".
- * @return An Observable that emits a sequential number each time interval.
- */
- export declare function interval(period?: number, scheduler?: SchedulerLike): Observable<number>;
- //# sourceMappingURL=interval.d.ts.map
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