feat: throw error when multiple versions specified (#122)

* Throw error when multiple versions specified

* fix: fmt

* fix: fmt

* Swallow error on ENOENT

* Match versions

* refactor: install pnpm

---------

Co-authored-by: Khải <[email protected]>
Co-authored-by: Zoltan Kochan <[email protected]>

Author: 3 people