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How to insert an Expo project in a Monorepo

Mauricio Reatto Duarte on April 09, 2020

Introduction In this post, I'll cover about adding an Expo project inside a Monorepo project. I found on the internet so many people try...

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Vince Picone • Jul 27 '20

This was super helpful thank you! One point of confusion for the dependencies. If you're adding it to the root, you shouldn't need to specify a workspace right? Also I don't the the metro-config dep is necessary.

So this:

 yarn workspace @monorepo/expo-app add expo-yarn-workspaces metro-config -D -W

Could be:

   yarn workspace add -D -W expo-yarn-workspaces

AlbertGao • Apr 9 '20 • Edited

AlbertGao@Albert-LottoNZ-Laptop monorepo % pwd
/Users/AlbertGao/codes/teamingCloud/workspace/monorepo
AlbertGao@Albert-LottoNZ-Laptop monorepo % yarn workspace @monorepo/universal add expo-yarn-workspaces metro-config -D -W
yarn workspace v1.22.4
error Cannot find the root of your workspace - are you sure you're currently in a workspace?
info Visit yarnpkg.com/en/docs/cli/workspace for documentation about this command.
AlbertGao@Albert-LottoNZ-Laptop monorepo %

Thanks for the post!
Stuck at the 1st step... Anything I am missing?

Mauricio Reatto Duarte Expo Lovers ♥️ • Apr 9 '20

As the error says, are you in a workspace?

// /Users/AlbertGao/codes/teamingCloud/workspace/monorepo/package.json

{
  "name": "monorepo",
   // ...
  "workspaces": {
    "packages": [
      "packages/*"
    ]
  },

AlbertGao • Apr 10 '20

Thanks! I wondered why there is no such creating step in the blog, then I thought yarn might magic figure it out, haha was wrong.

I ended up following the official yarn doc to create a workspace, and make sure it is working, then I followed the 2nd part of this blog to add the expo support, all good now!

Thanks! :)