Technical articles

See also the React Native production checklist, a 50-point pre-release review.

• Production stability

  Debugging React Native crashes with Firebase Crashlytics

  How I go from a Crashlytics report to a fix that’s actually verified in a release build.

  Based on production maintenance of the Khedmah Delivery apps.

• Performance

  Making a React Native app faster: startup, rendering and local data

  What made two production apps faster: caching, fewer startup requests, fewer re-renders and local data.

  Based on Khedmah Delivery (startup from 7–8 seconds to 2–3 seconds) and SnapHatch (about 20% faster startup from local data).

• Architecture

  Building a React Native app that works without signal

  Local data, background sync and recovery, from an app that’s mostly used where there’s no signal.

  Based on SnapHatch, where I set up the local SQLite database and worked on sync.

• Maps and location

  Maps and live tracking in React Native: what to keep separate

  Separating location updates, order state, permissions and map rendering in a tracking feature.

  Based on live order tracking in the Khedmah apps and the maps in DogPack and SnapHatch.

• Upgrades

  Upgrading an older React Native app in stages

  A staged way to upgrade an established app without stopping feature work or taking big release risks.

  A staged planning approach for established apps.