react-native-draggable-flatlist/lib/module/components/ScrollOffsetListener.js

A drag-and-drop-enabled FlatList component for React Native

import { runOnJS, useAnimatedReaction } from "react-native-reanimated";
import { typedMemo } from "../utils";

const ScrollOffsetListener = _ref => {
  let {
    scrollOffset,
    onScrollOffsetChange
  } = _ref;
  useAnimatedReaction(() => {
    return scrollOffset.value;
  }, (cur, prev) => {
    if (cur !== prev) {
      runOnJS(onScrollOffsetChange)(cur);
    }
  }, [scrollOffset]);
  return null;
};

export default typedMemo(ScrollOffsetListener);
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