--- /dev/null
+import { AsyncScheduler } from './AsyncScheduler';
+/**
+ *
+ * Async Scheduler
+ *
+ * <span class="informal">Schedule task as if you used setTimeout(task, duration)</span>
+ *
+ * `async` scheduler schedules tasks asynchronously, by putting them on the JavaScript
+ * event loop queue. It is best used to delay tasks in time or to schedule tasks repeating
+ * in intervals.
+ *
+ * If you just want to "defer" task, that is to perform it right after currently
+ * executing synchronous code ends (commonly achieved by `setTimeout(deferredTask, 0)`),
+ * better choice will be the {@link asapScheduler} scheduler.
+ *
+ * ## Examples
+ * Use async scheduler to delay task
+ * ```ts
+ * import { asyncScheduler } from 'rxjs';
+ *
+ * const task = () => console.log('it works!');
+ *
+ * asyncScheduler.schedule(task, 2000);
+ *
+ * // After 2 seconds logs:
+ * // "it works!"
+ * ```
+ *
+ * Use async scheduler to repeat task in intervals
+ * ```ts
+ * import { asyncScheduler } from 'rxjs';
+ *
+ * function task(state) {
+ * console.log(state);
+ * this.schedule(state + 1, 1000); // `this` references currently executing Action,
+ * // which we reschedule with new state and delay
+ * }
+ *
+ * asyncScheduler.schedule(task, 3000, 0);
+ *
+ * // Logs:
+ * // 0 after 3s
+ * // 1 after 4s
+ * // 2 after 5s
+ * // 3 after 6s
+ * ```
+ */
+export declare const asyncScheduler: AsyncScheduler;
+/**
+ * @deprecated renamed. Use {@link asyncScheduler}
+ */
+export declare const async: AsyncScheduler;