I was checking out the performance and noticed that I had to install some modules still in order to get them to work even after an initial npm i. Instead of creating a package.json in the perf dir I just added them to the devdependencies in the root package.json. Dunno if this is your best practice, but it works. I also tried to conform to your versioning scheme.
added missing dev dependency modules so perf can run after a 'npm i'