Rhapsody now uses the pnpm package manager to manage dependencies. PNPM is a battle-tested NPM alternative with first-class support for workspaces and monorepos. In fact, we've been using it at Salesloft for years in the Design System repo (via rush). It unlocks many much needed improvements as we continue to scale the Rhapsody codebase.
See the How to Work with PNPM doc for more information.