Recent posts tagged react-native

If you've worked with React Native for a while, you've probably run into a problem where Metro refuses to start, gets stuck while bundling, or leaves your app waiting for JavaScript that never arrives. Sometimes the terminal shows an error immediat...

A cross-platform design system sounds simple until the first real component forces the platforms apart. React and React Native can expose the same product concept — a button, checkbox, input, modal — while relying on very different runtime primitive...

AI makes UI faster to produce — and easier to fragment. Why Vellira is building cross-platform components and developer tooling to keep growing UI systems coherent as humans and coding agents move faster. AI can now generate UI faster than many team...

If you are using Firebase with a React Native app, sooner or later you will probably run into something like this: FirebaseError: code=permission-denied: Missing or insufficient permissions. Or: Error: PERMISSIONDENIED: Permission denied And t...

If you work with Expo long enough, you will probably run into expo-doctor. You run: npx expo-doctor and instead of everything being green, you get something like: ✖ Check Expo config ✖ Check dependencies ✖ Check package versions Sometimes the...

You've validated the idea. You've got a rough spec, maybe a Figma file, and a deadline that's tighter than you'd like. Now you're stuck on a decision that feels bigger than it should: Flutter or React Native. We get why this question causes so much ...

How to Fix “Unable to Resolve Module” Errors in React Native and Expo If you have been working with React Native or Expo for a while, there is a good chance you have seen an error that looks something like this: Unable to resolve module ./componen...

Choosing a React Native developer sounds simple until the hiring model starts affecting your budget, control, and delivery timeline. Finding a React Native developer is not usually the difficult part. The harder decision is figuring out how that dev...

There is a particular kind of Expo error that I think almost every developer eventually runs into. You make a change to your project, run your usual build command: eas build and instead of getting a nice .apk or .aab at the end, you get: Build ...

You make a small change to your React Native project, install a new package, or upgrade a dependency. Everything looks fine until you try to build your Android app. Then Gradle stops with something like: Execution failed for task ':app:mergeDexDebu...

If you've been developing with React Native or Expo for a while, chances are you've had a project that suddenly refuses to build for what seems like no reason. Maybe you installed a new package. Maybe you upgraded Expo. Maybe you only changed a sin...

I recently spent far more time than I'd like to admit chasing down a hard crash after upgrading a project from Expo SDK 54 to 55. The app launched fine. Navigation worked. Everything looked normal. Then the moment a Reanimated animation fired, the...

Fixing the "Namespace Not Specified" Error in React Native and Expo Android Builds If you recently upgraded a project to React Native 0.73+ or bumped your Expo SDK to version 50+, you may have run into an Android build error that looks something li...

The Crash You pull down a fresh React Native repo, or you upgrade your Expo project, navigate to your ios directory, and run your standard installation command: pod install Instead of a clean build, your terminal drops a wall of text pointing to...

How to Fix "resource drawable/splashscreenlogo not found" After an Expo SDK Upgrade Upgrading your Expo SDK version to keep up with the latest App Store and Google Play requirements is usually a smooth process—until Gradle decides to punch you in t...

We’ve all been there. You find an awesome library, you run npx expo install, you import it into your code, and you start your development server. You expect magic. Instead, your simulator turns blindingly red with an error that looks something li...

Most apps speak one language and silently lose everyone else. ## If your app is English-only, you are telling a massive portion of the global market to meet you halfway. If you want them to open your app and instantly feel at home—in Spanish, Frenc...

We’ve all been there. You spend weeks building a feature, testing it on your local simulator or a physical device running a development stream. Everything is butter. No lag, no warnings. You confidently bundle the app, ship it to TestFlight, wait fo...

It’s the same story every time. You run a simple package upgrade, or you decide it's time to bump your Expo SDK version. Locally, JavaScript compiled perfectly. But the second you run a native build, your terminal explodes with hundreds of lines of r...

You just upgraded your local development environment, updated Xcode, or bumped a minor patch version in your React Native project. You open your terminal, run your standard iOS build command, and instead of a clean bundling process, the terminal thro...