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+import { AnimationFrameAction } from './AnimationFrameAction';
+import { AnimationFrameScheduler } from './AnimationFrameScheduler';
+
+/**
+ *
+ * Animation Frame Scheduler
+ *
+ * <span class="informal">Perform task when `window.requestAnimationFrame` would fire</span>
+ *
+ * When `animationFrame` scheduler is used with delay, it will fall back to {@link asyncScheduler} scheduler
+ * behaviour.
+ *
+ * Without delay, `animationFrame` scheduler can be used to create smooth browser animations.
+ * It makes sure scheduled task will happen just before next browser content repaint,
+ * thus performing animations as efficiently as possible.
+ *
+ * ## Example
+ * Schedule div height animation
+ * ```ts
+ * // html: <div style="background: #0ff;"></div>
+ * import { animationFrameScheduler } from 'rxjs';
+ *
+ * const div = document.querySelector('div');
+ *
+ * animationFrameScheduler.schedule(function(height) {
+ * div.style.height = height + "px";
+ *
+ * this.schedule(height + 1); // `this` references currently executing Action,
+ * // which we reschedule with new state
+ * }, 0, 0);
+ *
+ * // You will see a div element growing in height
+ * ```
+ */
+export const animationFrameScheduler = new AnimationFrameScheduler(AnimationFrameAction);
+
+/**
+ * @deprecated renamed. Use {@link animationFrameScheduler}
+ */
+export const animationFrame = animationFrameScheduler;