Cannot find module in the workspace?

What version of Turborepo are you using?

1.3.1

What package manager are you using / does the bug impact?

Yarn v1

What operating system are you using?

Mac

Describe the Bug

First of all, thank you for this amazing project. We’ve been enjoying using turborepo for the past 6 months and we love it so far!

I’m not sure if this is a bug report, but after digging into the issues and discussions, I couldn’t find anything near the problem we are currently facing and after triple checking the docs and a few hours of debug, we decided to open an issue ✋

We’re currently using Vercel and deploying an api using Fastify, we are using a similar setup than this one, we named it @acme/api for the reproduction.

When trying to import another package (@acme/utils) into the @acme/api project, the project would not build:

NowBuildError: src/app.ts(2,23): error TS2307: Cannot find module '@acme/utils' or its corresponding type declarations.

I made the logs public, if it helps: https://turbo-vercel-repro-h8fvyigkv-blatty.vercel.app/_logs

And here’s our turbo.json:

{
  "$schema": "https://turborepo.org/schema.json",
  "pipeline": {
    "build": {
      "dependsOn": ["^build"],
      "outputs": ["dist/**", "build/**", ".next/**", "public/**"]
    },
    "@acme/api#build": {
      "dependsOn": ["^build", "@acme/utils#build"],
      "outputs": ["dist/**", "build/**"]
    },
    "@acme/utils#build": {
      "dependsOn": ["^build"],
      "outputs": ["dist/**"]
    },
    "start": {
      "cache": false
    },
    "dev": {
      "cache": false
    }
  },
  "baseBranch": "origin/main",
  "globalDependencies": ["$GITHUB_TOKEN", "tsconfig.json"]
}

Expected Behavior

Expected @acme/utils to be included in @acme/api

To Reproduce

1. Clone the reproduction repo: https://github.com/Blatty/turbo-vercel-repro
2. Deploy to vercel, set the root directory to apps/api
3. Set the build command to cd ../../ && npx turbo run build --filter=@acme/api

We also tried with --no-cache & --force, yarn install --cwd ../.. as the “install command” to trigger the postinstall but without success 😞

[nathanhammond]

@styfle I believe that this is the minimal reproduction: https://github.com/nathanhammond/workspace-symlink-issue

It fails differently, but I’m ~sure that it’s the same root cause. (Early vs. late failure.)

Vercel configuration:

• build: cd ../.. && yarn build
• install cd ../.. && yarn
• root directory: apps/api

[styfle]

This change was only applied to vercel build. Try with ENABLE_VC_BUILD=1 environment variable and deploy again.