Is ScrollView close to bottom?

close-to-bottom.js

const isCloseToBottom = ({ layoutMeasurement, contentOffset, contentSize }) => {
  const paddingToBottom = 20;
  return layoutMeasurement.height + contentOffset.y >=
    contentSize.height - paddingToBottom;
};

<ScrollView
  style={styles.scrollViewContainer}
  scrollEventThrottle={1000}
  onScroll={({ nativeEvent }) => {
    if (isCloseToBottom(nativeEvent)) {
      this.onEndReached();
    }
  }}
>
</ScrollView>