[bug]: Registry item file ignores folders

[ivasilov]

Describe the bug

I'm trying to build a new registry and it's hard to predict where the file will be installed.
For example, using this file definition:

{
  "path": "src/registry/misc/lib/supabase/client.ts",
  "type": "registry:lib"
 }

The file is installed in <lib folder>/client.ts instead of <lib-folder>/acme/client.ts. I tried all variations, couldn't get it work. I want to avoid setting target and just let it use the lib defined folder.

In other files, the import is correctly changed during the installation from @/registry/misc/lib/supabase/client to @/<lib-folder>/supabase/client.

Affected component/components

Registry

How to reproduce

1. Add this entry to a registry item

{
  "path": "src/registry/misc/lib/supabase/client.ts",
  "type": "registry:lib"
 }

2. Set a custom lib folder in components.json in a test project.
3. Install the component/block from a running registry
4. The file should be <lib-folder>/acme/client.ts but it's in <lib-folder>/client.ts

Codesandbox/StackBlitz link

No response

Logs

System Info

shadcn@2.3.0, MacOS 15.2, Nodejs v20.11

Before submitting

• I've made research efforts and searched the documentation
• I've searched for existing issues

[ivasilov]

I found the issue and can replicate it with this test:

expect(
  resolveFilePath(
    {
      path: "src/registry/misc/lib/acme/client.ts",
      type: "registry:lib",
    },
    {
      resolvedPaths: {
        cwd: "/foo/bar",
        components: "/foo/bar/components",
        ui: "/foo/bar/components/ui",
        lib: "/foo/bar/lib2",
        hooks: "/foo/bar/hooks",
      },
    },
    {
      isSrcDir: false,
    }
  )
).toBe("/foo/bar/lib2/acme/client.ts")

The issue is caused by setting lib path to end with anything else than /lib (in this case, it ends with lib2). This issue breaks folders for other types as well.

This approach of figuring the folder paths seems too brittle. I would propose to change the registry-item.json:

1. Whenever you encounter <lib-folder> in the target prop, replace it with the lib path
2. If the target prop is not defined, replace it with <lib-folder>/{filename}