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Shared Axis Y

Shared Axis Y is a React and Tailwind CSS component from SmoothUI, licensed MIT. Copy it and paste it into your project.

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What it is

Shared Axis Y is a React and Tailwind CSS component from SmoothUI, licensed MIT. Copy it and paste it into your project.

How to use it

Open it in the catalogue, press copy, and paste it into your project. The prompt you copy carries the code and the rules that tell your agent to reproduce it without changing anything.

Open in the catalogue

Five free copies a month. No card.

Needs

npm i motion

Licence

This component comes from SmoothUI and is redistributed under the MIT licence, which permits commercial use. The copyright notice travels with the code.

Shared Axis Y

index.tsx
"use client";

import { AnimatePresence, motion, useReducedMotion } from "motion/react";
import { useEffect, useState } from "react";

export interface SharedAxisYProps {
  className?: string;
  /** Interval between phrase swaps in milliseconds. */
  interval?: number;
  phrases: string[];
}

const STAGGER_S = 0.078;

/**
 * SharedAxisY — per-word hard-cut staircase transition.
 * Each word flips in/out with stepped timing, creating a sharp editorial cascade.
 * From the animate-text catalog (`shared-axis-y`, display: "Word Cut Staircase").
 */
export default function SharedAxisY({
  phrases,
  className = "",
  interval = 2500,
}: SharedAxisYProps) {
  const [index, setIndex] = useState(0);
  const shouldReduceMotion = useReducedMotion();

  useEffect(() => {
    const id = setInterval(() => {
      setIndex((prev) => (prev + 1) % phrases.length);
    }, interval);
    return () => clearInterval(id);
  }, [interval, phrases.length]);

  const words = (phrases[index] ?? "").split(" ");

  return (
    <span
      aria-live="polite"
      className={`inline-flex flex-wrap gap-x-[0.25em] ${className}`}
    >
      <AnimatePresence mode="wait">
        <motion.span
          className="inline-flex flex-wrap gap-x-[0.25em]"
          key={index}
        >
          {words.map((word, i) => (
            <motion.span
              animate={{ opacity: 1 }}
              exit={
                shouldReduceMotion
                  ? { opacity: 0, transition: { duration: 0 } }
                  : {
                      opacity: 0,
                      transition: { delay: i * STAGGER_S, duration: 0 },
                    }
              }
              initial={shouldReduceMotion ? { opacity: 1 } : { opacity: 0 }}
              // biome-ignore lint/suspicious/noArrayIndexKey: words have no stable id
              key={i}
              style={{ display: "inline-block" }}
              transition={
                shouldReduceMotion
                  ? { duration: 0 }
                  : { delay: i * STAGGER_S, duration: 0 }
              }
            >
              {word}
            </motion.span>
          ))}
        </motion.span>
      </AnimatePresence>
    </span>
  );
}

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