.

node_modules/rxjs/dist/esm5/internal/observable/dom/animationFrames.js

@@ -0,0 +1,34 @@
+import { Observable } from '../../Observable';
+import { performanceTimestampProvider } from '../../scheduler/performanceTimestampProvider';
+import { animationFrameProvider } from '../../scheduler/animationFrameProvider';
+export function animationFrames(timestampProvider) {
+    return timestampProvider ? animationFramesFactory(timestampProvider) : DEFAULT_ANIMATION_FRAMES;
+}
+function animationFramesFactory(timestampProvider) {
+    return new Observable(function (subscriber) {
+        var provider = timestampProvider || performanceTimestampProvider;
+        var start = provider.now();
+        var id = 0;
+        var run = function () {
+            if (!subscriber.closed) {
+                id = animationFrameProvider.requestAnimationFrame(function (timestamp) {
+                    id = 0;
+                    var now = provider.now();
+                    subscriber.next({
+                        timestamp: timestampProvider ? now : timestamp,
+                        elapsed: now - start,
+                    });
+                    run();
+                });
+            }
+        };
+        run();
+        return function () {
+            if (id) {
+                animationFrameProvider.cancelAnimationFrame(id);
+            }
+        };
+    });
+}
+var DEFAULT_ANIMATION_FRAMES = animationFramesFactory();
+//# sourceMappingURL=animationFrames.js.map