emaui/node_modules/@mantine/hooks/esm/use-in-viewport/use-in-viewport.mjs

'use client';
import { useRef, useState, useCallback } from 'react';

function useInViewport() {
  const observer = useRef(null);
  const [inViewport, setInViewport] = useState(false);
  const ref = useCallback((node) => {
    if (typeof IntersectionObserver !== "undefined") {
      if (node && !observer.current) {
        observer.current = new IntersectionObserver((entries) => {
          const lastEntry = entries[entries.length - 1];
          setInViewport(lastEntry.isIntersecting);
        });
      } else {
        observer.current?.disconnect();
      }
      if (node) {
        observer.current?.observe(node);
      } else {
        setInViewport(false);
      }
    }
  }, []);
  return { ref, inViewport };
}

export { useInViewport };
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