More importantly, pnpm installs packages as symlinks, so the deduping is rather more effective. I believe it also tries to mirror the NPM folder structure and s

More importantly, pnpm installs packages as symlinks, so the deduping is rather more effective. I believe it also tries to mirror the NPM folder structure and style of deduping as well, but if you have two of the same package installed anywhere on your system, pnpm will only need to download and save one copy of that package.