"All projects should have unique names"

[matthew-dean]

What does this line in the documentation mean? Names where? Defined where? All the projects in my monorepo certainly have unique names defined by their package.json file. Yet, setting up defineWorskspace like the documentation suggests 'packages/*' results in Error: Project name "packages" is not unique. All projects in a workspace should have unique names.

If I change the workspace to packages/*/* the error says that the directory name for the project is not unique. Which, again, it is. So what the heck is the output referring to?

[sheremet-va]

Can you show your project folder structure and vite/vitest config files.

Name is test.name in the config file or a folder name, Vitest doesn't read package.json, it infers it from the folder.

[seawatts]

I'm seeing the same issue. I don't have a vitest.config.ts I only have a vitest.workspace.ts

// vitest.workspace.ts
export default ['packages/*'];

My project structure is

root
  -> packages
      -> package-1
      -> package-2

vitest.workspace.ts

[matthew-dean]

I got this working! The Vitest workspace documentation is very opaque, and this error has nothing to do with the problem.

In my case:

1. Each package MUST have a vitest.config.ts, or at the VERY LEAST,
2. Each package that the workspace DEFINES must have a vitest.config.ts.

The way I get this working was to have a Vitest Workspace that looks like:

import { defineWorkspace } from 'vitest/config'
export default defineWorkspace([
  'packages/*/vitest.config.ts'
])

Essentially, Vitest will complain about names needing to be unique because it... I dunno, but whatever the Vitest documentation says is false. It won't use the package (folder) names and will fail.

[seawatts]

Great to know; thanks for looking into this.

You are correct, the docs state the following:

https://vitest.dev/guide/workspace.html#defining-a-workspace

Vitest will consider every folder in packages as a separate project even if it doesn't have a config file inside.

It seems like this is a bug and needs to be fixed.
@sheremet-va can you confirm?

[sheremet-va]

I can’t confirm anything without a reproduction. Having projects without a config works on my side.

[Shakeskeyboarde]

@sheremet-va I believe the problem occurs when two workspace directories, have the same name, under different parent paths. For instance packages/foo has the same name as tests/foo. It doesn't matter if either has a vite/vitest config or not.

@matthew-dean You can fix the problem by actually adding a test configuration to one/both with an explicit name, so that it doesn't implicitly use the directory name as the test/project name.

export default defineConfig({
  "test": {
    "name": "unique-name"
  }
});