Metro (React Native, Expo)

npm install --save-dev @hozo/metro @hozo/compiler
npm install @hozo/core

const { getDefaultConfig } = require('@react-native/metro-config')
const { withHozo } = require('@hozo/metro/config')

// Exported as a promise, which Metro awaits: the project-wide candidate
// module has to be generated before the bundle starts.
module.exports = withHozo(getDefaultConfig(__dirname), { css: 'src/theme.css' })

On React Native 0.87, pin androidx.collection on Android. This is not Hozo’s bug, but any app on 0.87 can hit it. React Native 0.87 keeps Android’s view registry in androidx.collection’s MutableIntObjectMap, and the 1.4.0–1.4.2 versions it resolves can lose entries after a run of removals. Views that were never deleted then stop receiving updates: text stays stale, buttons stop responding, and logcat says Unable to find viewState for tag N. examples/native-demo hit this in about half its runs until it pinned the fix:

dependencies {
    implementation("androidx.collection:collection:1.4.4")
}

React Native 0.86 uses a different registry by default, and 0.88 ships 1.4.4 (reactwg/react-native-releases#1426), so the pin is for 0.87 only.