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MetaFactory App Monorepo

Monorepo with Expo + Next.js + Tailwind. Uses yarn workspaces.

GETTING STARTED

  • Before you begin, you should ensure you run 'yarn install' at root directory, the post install script should take care of all injections etc. with the libraries required that aren't nativly supported by expo.

  • If you run into any linking issues (missing 'stream' or 'aynscstorage') you likely just need to close the server/localhost page before switching from web to native apps (ios/android) and vice versa, as we depend on package injection the auto generated files of expo/react-native-web need to be refreshed between platforms.

Folders

  • apps/next (Next.js web app)
  • apps/expo (Expo native app)
  • packages/tsconfig (shared tsconfigs)
    • Make sure to add any other package folders you make to apps/next/next.config.js in const transpilePackages and packages/tsconfig/base.json
  • packages/app (shared code between web and native, consumed by apps/(next/expo))
  • packages/cms (Directus folder)
  • packages/services (backend logic deployed to Vercel serverless)

Running

  • Clone the repo
  • Copy .env.example files and populate missing values
  • Run yarn install
  • Run postgres + Directus with docker:cms:start
  • Run Next.js app with yarn next start

Creating Directus extensions

  1. Run yarn create directus-extension inside the root extensions folder. Remove the npm lockfile
  2. cd back to root and run yarn
  3. Run yarn cms add directus-extension-<name>@1

Practices

In order to run a yarn command in the app folder, you can prepend it with yarn app. For example, to install a package in the app folder:

# add a package
yarn app add restyled
# install again at root so workspaces can work its magic
yarn install

# post install will inject the nessecery libraries for web3.js

The nice thing about the monorepo is that you only need each package to be in one package.json file. You don't need to add a dependency in every package.json. So we can use the main app as the entry point for basically every dependency.

You should also run yarn install at the root every time you add a package, since we use a patch-package postinstall script at the root folder.

EAS Build

If you're using EAS from Expo, you might need to add packages to your package.json's expo-yarn-workspaces.symlinks array.

For starters, you should create a separate folder called native-app or something like that. That's where your bare expo app should live.

Then you should put a react-native resolution in your root package.json to avoid version conflicts. Or, just make sure you have only one react-native in a package.json. It should be in your the package that has your bare app.

Put this in your root package.json if you want to avoid excessive callbacks as an error:

{
  "resolutions": { "react-native": "0.63.4" }
}

If you encounter a build error indicating you don't have these, you should add them. Apparently Expo is working on making this step simpler with a single symlink.

Typically you have to do this:

  • Install an expo package
  • add it to the symlinks in package.json of your packages/app
  • yarn inside of packages/app (to trigger postinstall and symlink)
  • cd ios, pod install
  • Run the expo app (expo run:ios)