initial commit: rocket.new export of broadcastbeat

src/hooks/useScrollReveal.ts

@@ -0,0 +1,37 @@
+'use client';
+import { useEffect, useRef, RefObject } from 'react';
+
+interface ScrollRevealOptions {
+  threshold?: number;
+  rootMargin?: string;
+  once?: boolean;
+}
+
+export function useScrollReveal<T extends HTMLElement>(
+  options: ScrollRevealOptions = {}
+): RefObject<T> {
+  const { threshold = 0.12, rootMargin = '0px 0px -40px 0px', once = true } = options;
+  const ref = useRef<T>(null);
+
+  useEffect(() => {
+    const el = ref.current;
+    if (!el) return;
+
+    const observer = new IntersectionObserver(
+      ([entry]) => {
+        if (entry.isIntersecting) {
+          el.classList.add('scroll-revealed');
+          if (once) observer.unobserve(el);
+        } else if (!once) {
+          el.classList.remove('scroll-revealed');
+        }
+      },
+      { threshold, rootMargin }
+    );
+
+    observer.observe(el);
+    return () => observer.disconnect();
+  }, [threshold, rootMargin, once]);
+
+  return ref;
+}