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

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+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((subscriber) => {
+        const provider = timestampProvider || performanceTimestampProvider;
+        const start = provider.now();
+        let id = 0;
+        const run = () => {
+            if (!subscriber.closed) {
+                id = animationFrameProvider.requestAnimationFrame((timestamp) => {
+                    id = 0;
+                    const now = provider.now();
+                    subscriber.next({
+                        timestamp: timestampProvider ? now : timestamp,
+                        elapsed: now - start,
+                    });
+                    run();
+                });
+            }
+        };
+        run();
+        return () => {
+            if (id) {
+                animationFrameProvider.cancelAnimationFrame(id);
+            }
+        };
+    });
+}
+const DEFAULT_ANIMATION_FRAMES = animationFramesFactory();
+//# sourceMappingURL=animationFrames.js.map