52 lines
1.4 KiB
TypeScript
52 lines
1.4 KiB
TypeScript
"use client";
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import { useEffect } from "react";
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import Lenis from "lenis";
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import { gsap } from "gsap";
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import { ScrollTrigger } from "gsap/ScrollTrigger";
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gsap.registerPlugin(ScrollTrigger);
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export default function SmoothScroll() {
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useEffect(() => {
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// Respect reduced-motion: skip momentum scrolling entirely.
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if (window.matchMedia("(prefers-reduced-motion: reduce)").matches) {
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ScrollTrigger.refresh();
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return;
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}
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const lenis = new Lenis({
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duration: 1.15,
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smoothWheel: true,
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easing: (t) => Math.min(1, 1.001 - Math.pow(2, -10 * t)),
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});
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lenis.on("scroll", ScrollTrigger.update);
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const ticker = (time: number) => lenis.raf(time * 1000);
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gsap.ticker.add(ticker);
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gsap.ticker.lagSmoothing(0);
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// Anchor links should route through Lenis for the smooth glide.
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const onClick = (e: MouseEvent) => {
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const a = (e.target as HTMLElement).closest('a[href^="#"]');
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if (!a) return;
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const id = a.getAttribute("href");
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if (!id || id === "#") return;
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const target = document.querySelector(id);
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if (target) {
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e.preventDefault();
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lenis.scrollTo(target as HTMLElement, { offset: -20 });
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}
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};
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document.addEventListener("click", onClick);
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return () => {
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document.removeEventListener("click", onClick);
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gsap.ticker.remove(ticker);
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lenis.destroy();
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};
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}, []);
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return null;
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}
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