[bug]: npm error Unsupported URL Type "workspace:": workspace:* using npx shadcn@canary init

[whdgur5717]

Describe the bug

When creating a new project and running npx shadcn@canary init, selecting the next.js(monorepo) version results in an EUNSUPPORTEDPROTOCOL error.

In my opinion, The reason for this is likely that Shadcn defaults to npm when it cannot detect a package manager, then attempts to run the npm install command. However, the monorepo template files are based on pnpm, which causes compatibility issues and results in the error

Affected component/components

CLI init(monorepo)

How to reproduce

1. make empty project
2. execute npx shadcn@canary init
3. Would you like to start a new project? › Next.js (Monorepo)

Codesandbox/StackBlitz link

No response

Logs

shadcn-mono-test git:(main) npx shadcn@canary init                            

✔ The path /Users/jh/shadcn-mono-test does not contain a package.json file.
  Would you like to start a new project? › Next.js (Monorepo)
✔ What is your project named? … my-app
✖ Something went wrong creating a new Next.js monorepo.
Something went wrong. Please check the error below for more details.
If the problem persists, please open an issue on GitHub.

Command failed with exit code 1: npm install
npm error code EUNSUPPORTEDPROTOCOL
npm error Unsupported URL Type "workspace:": workspace:*
npm error A complete log of this run can be found in: /Users/jh/.npm/_logs/2025-01-22T06_59_21_296Z-debug-0.log

System Info

mac

Before submitting

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