emaui/node_modules/@mantine/hooks/cjs/use-in-viewport/use-in-viewport.cjs

'use client';
'use strict';

var React = require('react');

function useInViewport() {
  const observer = React.useRef(null);
  const [inViewport, setInViewport] = React.useState(false);
  const ref = React.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 };
}

exports.useInViewport = useInViewport;
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