Question: Why both tsconfig paths and yarn workspaces?

[jonaskello]

I was researching turborepo and found this great example repo :-)

While looking through it I found that tsconfig.base.json had paths specified like this:

"baseUrl": ".",
    "paths": {
      "@my-monorepo/*": ["./packages/*"]
    }

However this seems redundant since the repo is also using yarn workspaces in the root package.json like this:

"workspaces": [
    "packages/*"
  ],

This will create symlinks in node_modules/@my-monorepo/XXX so module resolution would work without using paths in tsconfig.base.json.

So my question is why both tsconfig paths and yarn worspaces are used?