npx create-solito-app@latest my-solito-app

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This monorepo is a blank(ish) starter for an Expo + Next.js app.

While it's pretty barebones, it does a lot of the annoying config for you. The folder structure is opinionated, based on my long experience building for this stack.

• solito for cross-platform navigation
• moti for animations
• dripsy for theming/design (you can bring your own, too)
• Expo SDK 46
• Next.js 12
• React Navigation 6

• apps entry points for each app

  • expo
  • next

• packages shared packages across apps

  • 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.

• Install dependencies: yarn

• Next.js local dev: yarn web

  • Runs yarn next

• Expo local dev: yarn native

  • Runs expo start

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

If you're installing a library with any native code, you must install it in apps/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).

Follow Fernando Rojo on Twitter: @FernandoTheRojo

See my talk about this topic at Next.js Conf 2021: