Nativewind And Tailwind Css Compatibility Skill

NativeWind and Tailwind CSS compatibility:
- Use nativewind@2.0.11 with tailwindcss@3.3.2.
- Higher versions may cause 'process(css).then(cb)' errors.
- If errors occur, remove both packages and reinstall specific versions: npm remove nativewind tailwindcss npm install nativewind@2.0.11 tailwindcss@3.3.2

Iron Laws

ALWAYS pin to nativewind@2.0.11 and tailwindcss@3.3.2 — higher versions trigger process(css).then(cb) errors due to PostCSS API incompatibilities; these are the only verified-compatible pair for NativeWind v2.
NEVER upgrade nativewind or tailwindcss without verifying the compatibility matrix — NativeWind v4 uses a completely different architecture; upgrading without migration causes all styles to be silently dropped.
ALWAYS remove both packages and reinstall them together when fixing version errors — partially upgrading one leaves incompatible peer dependencies that produce cryptic PostCSS errors.
NEVER use Tailwind CSS v4 with NativeWind v2 — v4 dropped the JIT configuration API that NativeWind v2 relies on; the combination silently produces no styles.
ALWAYS include nativewind/preset in tailwind.config.js — without the preset, Tailwind compiles classes but NativeWind cannot inject them into React Native's StyleSheet engine.

Anti-Pattern	Why It Fails	Correct Approach
Using nativewind above 2.0.11 with tailwindcss 3.3.2	PostCSS API mismatch triggers `process(css).then(cb)` runtime error; styles fail silently	Pin to `nativewind@2.0.11` + `tailwindcss@3.3.2`; do not upgrade without migration guide
Upgrading only one of the two packages	Mismatched peer dependencies cause cryptic PostCSS errors	Remove both and reinstall together: `npm remove nativewind tailwindcss && npm install nativewind@2.0.11 tailwindcss@3.3.2`
Missing `nativewind/preset` in tailwind.config.js	Tailwind compiles classes but NativeWind cannot inject them into React Native StyleSheet; no styles applied	Add `presets: [require('nativewind/preset')]` to `tailwind.config.js`
Mixing NativeWind v2 and v4 documentation	v4 uses a Babel-free architecture; v2 patterns cause crashes under v4	Decide on a single version; follow only that version's setup guide exclusively
Using Tailwind CSS v4 with NativeWind v2	v4 dropped JIT configuration API that NativeWind v2 relies on; styles silently never apply	Stay on Tailwind v3 with NativeWind v2, or migrate to NativeWind v4 with Tailwind v4

Before starting:

cat .claude/context/memory/learnings.md

After completing: Record any new patterns or exceptions discovered.

ASSUME INTERRUPTION: Your context may reset. If it's not in memory, it didn't happen.