pear-runtime-react-native

Pear runtime for React Native: storage path, bare workers (worklets), and OTA updates.

npm install pear-runtime-react-native react-native-bare-kit

Requires react-native-bare-kit in your project.

MVP - EXPERIMENTAL

This boilerplate is MVP and Experimental.

Usage

import PearRuntime from 'pear-runtime-react-native'
import bundle from './worker.bundle.js'

const runtime = new PearRuntime()
const IPC = runtime.run('/worker.bundle', bundle)

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OTA updates

OTA works for Expo and plain React Native. Native setup differs; Metro and JS setup are the same.

Flow: Expo

1. Native — In app.json / app.config.js add the plugin, then run prebuild:

   { "expo": { "plugins": ["pear-runtime-react-native/plugin"] } }
   

   npx expo prebuild
   

   Release builds load the OTA bundle from pear-runtime/ota/app.bundle when present.

2. Metro and App entry below.

Flow: Plain React Native

Apply the same native changes (iOS bundleURL, Android getJSBundleFile) to your ios/ and android/ projects manually so release builds load from pear-runtime/ota/app.bundle when present. Then do Metro and App entry below.

Metro

Create metro.config.js in the project root:

const { getMetroConfig } = require('pear-runtime-react-native/metro-config')
module.exports = getMetroConfig(__dirname, { useExpo: true, useSentry: false })

Options (second argument): useExpo — merge in expo/metro-config when available (default true). useSentry — merge in @sentry/react-native/metro when available (default false).

Add @react-native/metro-config to your devDependencies. With Expo, expo/metro-config is merged in automatically. Then npx react-native bundle works for OTA payloads.

npm install @react-native/metro-config --save-dev

Create OTA bundle (payload)

From the project root (entry file must match your app, e.g. index.js):

npx react-native bundle --platform ios --dev false --entry-file index.js --bundle-output dist/by-arch/<host-arch>/app/app.bundle --assets-dest dist/by-arch/<host-arch>/app
npx react-native bundle --platform android --dev false --entry-file index.js --bundle-output dist/by-arch/<host-arch>/app/app.bundle --assets-dest dist/by-arch/<host-arch>/app
cp -f package.json dist/package.json

Then stage and seed with pear as in your OTA flow.

API

const pear = PearRuntime()

Create a pear runtime (currently doesnt do anything on its own).

IPC <stream.Duplex> = pear.run(filename, bundle, argv)

Start a Bare worklet. returns IPC duplex stream.

License

Apache-2.0