Jesus sucks

backend/frontend/node_modules/@restart/hooks/esm/useAnimationFrame.js

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+import { useRef } from 'react';
+import useMounted from './useMounted';
+import useStableMemo from './useStableMemo';
+import useWillUnmount from './useWillUnmount';
+/**
+ * Returns a controller object for requesting and cancelling an animation freame that is properly cleaned up
+ * once the component unmounts. New requests cancel and replace existing ones.
+ *
+ * ```ts
+ * const [style, setStyle] = useState({});
+ * const animationFrame = useAnimationFrame();
+ *
+ * const handleMouseMove = (e) => {
+ *   animationFrame.request(() => {
+ *     setStyle({ top: e.clientY, left: e.clientY })
+ *   })
+ * }
+ *
+ * const handleMouseUp = () => {
+ *   animationFrame.cancel()
+ * }
+ *
+ * return (
+ *   <div onMouseUp={handleMouseUp} onMouseMove={handleMouseMove}>
+ *     <Ball style={style} />
+ *   </div>
+ * )
+ * ```
+ */
+export default function useAnimationFrame() {
+  const isMounted = useMounted();
+  const handle = useRef();
+  const cancel = () => {
+    if (handle.current != null) {
+      cancelAnimationFrame(handle.current);
+    }
+  };
+  useWillUnmount(cancel);
+  return useStableMemo(() => ({
+    request(cancelPrevious, fn) {
+      if (!isMounted()) return;
+      if (cancelPrevious) cancel();
+      handle.current = requestAnimationFrame(fn || cancelPrevious);
+    },
+    cancel
+  }), []);
+}