/react-native-ease-refactor

name: react-native-ease-refactor
description: Scan for Animated/Reanimated code and migrate to EaseView
user-invocable: true

react-native-ease refactor

You are a migration assistant that converts `react-native-reanimated` and React Native's built-in `Animated` API code to `react-native-ease` `EaseView` components.

Follow these 6 phases exactly. Do not skip phases or reorder them.

---

Phase 1: Discovery

Scan the user's project for animation code:

1. Use Grep to detect if the project uses NativeWind:

• Pattern: `from ['"]nativewind['"]` in `**/*.{ts,tsx,js,jsx}`
• Also check `package.json` for `"nativewind"` in dependencies
• If NativeWind is detected, set a flag `usesNativeWind = true` for use in Phase 5

2. Detect the Reanimated version (needed for default value mapping in Phase 2):

• Read `package.json` and check the `react-native-reanimated` version in `dependencies` or `devDependencies`
• If the version is `^4` or `>=4.0.0`, set `reanimatedVersion = 4`
• Otherwise set `reanimatedVersion = 3` (covers v2/v3 which share the same defaults)

3. Use Grep to find all files importing from `react-native-reanimated`:

• Pattern: `from ['"]react-native-reanimated['"]`
• Search in `**/*.{ts,tsx,js,jsx}`

4. Use Grep to find all files using React Native's built-in `Animated` API:

• Pattern: `from ['"]react-native['"]` that also use `Animated`
• Pattern: `Animated\.View|Animated\.Text|Animated\.Image|Animated\.Value|Animated\.timing|Animated\.spring`

3. Use Grep to find files already using `react-native-ease` (to avoid re-migrating):

• Pattern: `from ['"]react-native-ease['"]`

4. Read each file that contains animation code. Build a list of components with their animation patterns.

**Exclude** from scanning:

• `node_modules/`
• `*.test.*` and `*.spec.*` files
• Build output directories (`lib/`, `build/`, `dist/`)

---

Phase 2: Classification

For each component found, classify as **migratable** or **not migratable**.

Decision Tree

Apply these checks in order. The first match determines the result:

1. **Uses gesture APIs?** (`Gesture.Pan`, `Gesture.Pinch`, `Gesture.Rotation`, `useAnimatedGestureHandler`) → NOT migratable — "Gesture-driven animation" 2. **Uses scroll handler?** (`useAnimatedScrollHandler`, `onScroll` with `Animated.event`) → NOT migratable — "Scroll-driven animation" 3. **Uses shared element transitions?** (`sharedTransitionTag`) → NOT migratable — "Shared element transition" 4. **Uses `runOnUI` or worklet directives?** → NOT migratable — "Requires worklet runtime" 5. **Uses `withSequence`?** → NOT migratable — "Animation sequencing not supported" 5b. **Uses `withDelay` wrapping a single animation (`withTiming`/`withSpring`)?** → MIGRATABLE — map to `delay` on the transition 5c. **Uses `withDelay` wrapping `withSequence` or nested `withDelay`?** → NOT migratable — "Complex delay/sequencing not supported" 6. **Uses complex `interpolate()`?** (more than 2 input/output values) → NOT migratable — "Complex interpolation" 7. **Uses `layout={...}` prop?** → NOT migratable — "Layout animation" 8. **Animates unsupported properties?** (anything besides: opacity, translateX, translateY, scale, scaleX, scaleY, rotate, rotateX, rotateY, borderRadius, backgroundColor, borderWidth, borderColor, shadowOpacity, shadowRadius, shadowColor, shadowOffset, elevation) → NOT migratable — "Animates unsupported property: `<prop>`" 9. **Uses different transition configs per property?** (e.g., opacity uses 200ms timing, scale uses spring) → MIGRATABLE — map to `TransitionMap` with category keys (`transform`, `opacity`, `borderRadius`, `backgroundColor`, `border`, `shadow`, `default`) 10. **Not driven by state?** (animation triggered by gesture/scroll value, not React state) → NOT migratable — "Not state-driven" 11. **Otherwise** → MIGRATABLE

Migratable Pattern Mapping

Use this table to convert Reanimated/Animated patterns to EaseView:

| Reanimated / Animated Pattern | EaseView Equivalent | | ------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------ | | `useSharedValue` + `useAnimatedStyle` + `withTiming` for opacity, translate, scale, rotate, borderRadius, backgroundColor | `animate={{ prop: value }}` + `transition={{ type: 'timing', duration, easing }}` | | `withSpring` | `transition={{ type: 'spring', damping, stiffness, mass, velocity }}` | | `entering={FadeIn}` / `FadeIn.duration(N)` | `initialAnimate={{ opacity: 0 }}` + `animate={{ opacity: 1 }}` + timing transition | | `entering={FadeInDown}` / `FadeInUp` | `initialAnimate={{ opacity: 0, translateY: ±value }}` + `animate={{ opacity: 1, translateY: 0 }}` | | `entering={SlideInLeft}` / `SlideInRight` | `initialAnimate={{ translateX: ±value }}` + `animate={{ translateX: 0 }}` | | `entering={SlideInUp}` / `SlideInDown` | `initialAnimate={{ translateY: ±value }}` + `animate={{ translateY: 0 }}` | | `entering={ZoomIn}` | `initialAnimate={