Tamagui + Solito + Next + Expo Monorepo

npx create-tamagui-app@latest myapp

⚡️ Instant clone & deploy

🔦 About

This monorepo is a starter for an Expo + Next.js + Tamagui + Solito app.

Many thanks to @FernandoTheRojo for the Solito starter monorepo which this was forked from. Check out his talk about using expo + next together at Next.js Conf 2021.

📦 Included packages

• tamagui for cross-platform views, themes and animations
• solito for cross-platform navigation
• Expo SDK 44
• Next.js 12
• React Navigation 6

🗂 Folder layout

The main apps are:

• expo (native)

• next (web)

• packages shared packages across apps

  • ui includes your custom UI kit that will be optimized by Tamagui
  • app you'll be importing most files from app/
    • features (don't use a screens folder. organize by feature.)
    • provider (all the providers that wrap the app, and some no-ops for Web.)
    • navigation Next.js has a pages/ folder. React Native doesn't. This folder contains navigation-related code for RN. You may use it for any navigation code, such as custom links.

You can add other folders inside of packages/ if you know what you're doing and have a good reason to.

🏁 Start the app

• Install dependencies: yarn

• Next.js local dev: yarn web

  • Runs yarn next

• Expo local dev: yarn native

  • Runs expo start

Developing

We've added packages/ui to show an example of building your own design system.

You need to watch it to have changes propagate, we've added a root watch command you should run in a separate terminal alongside the apps:

yarn watch

If you want to see Tamagui extract, try running yarn web:optimize and put a debug pragma at the top of packages/app/features/home.tsx, like so:

// debug

You'll see lots of output including the compiled HTML, CSS and all the steps it takes to get there.

UI Kit

Note we're following the design systems guide and creating our own package for components.

See packages/ui named @my/ui for how this works.

🆕 Add new dependencies

Pure JS dependencies

If you're installing a JavaScript-only dependency that will be used across platforms, install it in packages/app:

cd packages/app
yarn add date-fns
cd ../..
yarn

Native dependencies

If you're installing a library with any native code, you must install it in expo:

cd apps/expo
yarn add react-native-reanimated
cd ..
yarn

You can also install the native library inside of packages/app if you want to get autoimport for that package inside of the app folder. However, you need to be careful and install the exact same version in both packages. If the versions mismatch at all, you'll potentially get terrible bugs. This is a classic monorepo issue. I use lerna-update-wizard to help with this (you don't need to use Lerna to use that lib).

🧐 Why use Expo + Next.js?