Añadiendo ejemplo

Author: nelsondev19

.gitignore

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+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*

README.md

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+ <p align="center">
+  <img src="miniatura.png" alt="Youtube, Nelsonher, horchatajs"/>
+</p>
+
+<h3>
+<p align="center">Aprende como implementar Lazy Loading a tus imagenes con Intersection Observer API y React JS</p>
+</h3>
+
+#### Hook useInfiniteScroll
+
+```javascript
+import { useRef, useEffect } from "react";
+
+export const useInfiniteScroll = ({ element, fetch }) => {
+  const loader = useRef(fetch);
+
+  const observer = useRef(
+    new IntersectionObserver(
+      (entries) => {
+        const first = entries[0];
+        if (first.isIntersecting) {
+          loader.current();
+        }
+      },
+      { threshold: 0.5 }
+    )
+  );
+
+  useEffect(() => {
+    loader.current = fetch;
+  }, [fetch]);
+
+  useEffect(() => {
+    const currentElement = element;
+    const currentObserver = observer.current;
+
+    if (currentElement) {
+      currentObserver.observe(currentElement);
+    }
+    return () => {
+      if (currentElement) {
+        currentObserver.unobserve(currentElement);
+      }
+    };
+  }, [element]);
+};
+```