Yarn's workspaces provide some cool benefits to monorepos which AFAIK npm hasn't...

citrons · on April 5, 2022

I have so far had very good npm workspace experience. Just define "workspaces" property in package.json and your off. https://docs.npmjs.com/cli/v8/using-npm/workspaces

Right now only pain-point with npm is that "npm link" can't be forced to install peer dependencies so I'm unable to easily test typesscript built libraries within other projects.