ever-just/agentskills

Motion (Framer Motion) — React UI Animation Library

Declarative animations for React. Springs, gestures, layout animations, and page transitions. GPU-accelerated, production-ready.

Overview

• Repo: github.com/motiondivision/motion (26K+ stars)
• Language: TypeScript / React
• License: MIT
• Install: npm install motion
• Docs: motion.dev
• Note: Framer Motion was renamed to Motion. Import from motion/react.

Core API

Basic Animation

import { motion } from "motion/react";

// Animate on mount
<motion.div
  initial={{ opacity: 0, y: 20 }}
  animate={{ opacity: 1, y: 0 }}
  transition={{ duration: 0.5 }}
>
  Hello World
</motion.div>

// Animate on exit (requires AnimatePresence)
import { AnimatePresence } from "motion/react";

<AnimatePresence>
  {isVisible && (
    <motion.div
      initial={{ opacity: 0 }}
      animate={{ opacity: 1 }}
      exit={{ opacity: 0 }}
    >
      Content
    </motion.div>
  )}
</AnimatePresence>

Spring Physics

<motion.div
  animate={{ x: 100 }}
  transition={{
    type: "spring",
    stiffness: 300,
    damping: 20,
    mass: 1,
  }}
/>

// Presets
transition={{ type: "spring", bounce: 0.5 }}  // 0 = no bounce, 1 = very bouncy

Variants (Orchestrated Animations)

const container = {
  hidden: { opacity: 0 },
  show: {
    opacity: 1,
    transition: {
      staggerChildren: 0.1,    // Delay between children
      delayChildren: 0.3,       // Initial delay
    },
  },
};

const item = {
  hidden: { opacity: 0, y: 20 },
  show: { opacity: 1, y: 0 },
};

<motion.ul variants={container} initial="hidden" animate="show">
  {items.map((i) => (
    <motion.li key={i} variants={item}>{i}</motion.li>
  ))}
</motion.ul>

Gestures

// Hover
<motion.button
  whileHover={{ scale: 1.05 }}
  whileTap={{ scale: 0.95 }}
>
  Click me
</motion.button>

// Drag
<motion.div
  drag                          // Enable drag on both axes
  dragConstraints={{ left: -100, right: 100, top: -50, bottom: 50 }}
  dragElastic={0.2}
/>

Layout Animations

// Automatically animate layout changes
<motion.div layout>
  {isExpanded ? <ExpandedContent /> : <CollapsedContent />}
</motion.div>

// Shared layout animation (morph between elements)
<motion.div layoutId="card">
  {/* This element morphs between positions when layoutId matches */}
</motion.div>

Scroll Animations

import { useScroll, useTransform, motion } from "motion/react";

function ParallaxSection() {
  const { scrollYProgress } = useScroll();
  const y = useTransform(scrollYProgress, [0, 1], [0, -200]);
  const opacity = useTransform(scrollYProgress, [0, 0.5, 1], [1, 1, 0]);

  return (
    <motion.div style={{ y, opacity }}>
      Parallax content
    </motion.div>
  );
}

useAnimate (Imperative)

import { useAnimate } from "motion/react";

function MyComponent() {
  const [scope, animate] = useAnimate();

  async function handleClick() {
    await animate(".box", { scale: 1.5 }, { duration: 0.3 });
    await animate(".box", { rotate: 360 }, { duration: 0.5 });
    await animate(".box", { scale: 1, rotate: 0 });
  }

  return (
    <div ref={scope}>
      <div className="box" onClick={handleClick}>Click me</div>
    </div>
  );
}

Keyframes

<motion.div
  animate={{
    x: [0, 100, 100, 0, 0],
    y: [0, 0, 100, 100, 0],
    rotate: [0, 90, 180, 270, 360],
  }}
  transition={{ duration: 2, repeat: Infinity }}
/>

Transition Types

// Spring (default for physical values)
transition={{ type: "spring", stiffness: 100, damping: 10 }}

// Tween (duration-based)
transition={{ type: "tween", duration: 0.5, ease: "easeInOut" }}

// Easing options
ease: "linear" | "easeIn" | "easeOut" | "easeInOut"
ease: [0.42, 0, 0.58, 1]  // Custom cubic bezier

// Repeat
transition={{ repeat: Infinity, repeatType: "reverse", duration: 1 }}

// Delay
transition={{ delay: 0.5 }}

Common Patterns

Page Transition

// In layout component
<AnimatePresence mode="wait">
  <motion.div
    key={pathname}
    initial={{ opacity: 0, x: 20 }}
    animate={{ opacity: 1, x: 0 }}
    exit={{ opacity: 0, x: -20 }}
    transition={{ duration: 0.3 }}
  >
    {children}
  </motion.div>
</AnimatePresence>

Staggered List

const container = {
  hidden: {},
  show: { transition: { staggerChildren: 0.08 } },
};
const item = {
  hidden: { opacity: 0, y: 15 },
  show: { opacity: 1, y: 0, transition: { type: "spring", bounce: 0.3 } },
};

Scale on Hover Card

<motion.div
  whileHover={{ scale: 1.03, boxShadow: "0 10px 30px rgba(0,0,0,0.15)" }}
  transition={{ type: "spring", stiffness: 400, damping: 25 }}
/>

Best Practices

1. Use variants for orchestrated parent/child animations
2. Spring physics for natural-feeling motion (avoid linear easing)
3. layout prop for automatic layout change animations
4. AnimatePresence required for exit animations
5. layoutId for shared element transitions between routes
6. useScroll for scroll-linked animations (parallax, progress bars)
7. whileHover/whileTap for interactive feedback
8. Stagger children via variant transition.staggerChildren
9. Keep animations subtle — 0.2-0.5s duration for UI interactions
10. GPU-accelerated — Motion uses transforms by default

When to Use Motion vs GSAP

	Motion	GSAP
Framework	React-first	Framework-agnostic
Style	Declarative (JSX props)	Imperative (function calls)
Layout animations	Built-in (magic)	Manual
Scroll	useScroll hook	ScrollTrigger plugin
Gestures	Built-in (drag, hover, tap)	Draggable plugin
SVG morphing	Limited	MorphSVGPlugin
Bundle size	~30KB	~25KB core

Source

• Repo: github.com/motiondivision/motion
• Docs: motion.dev
• Examples: motion.dev/docs/react-quick-start