npm warns of inflight use during installation

[KenSharp]

Environment info

$ firebase --version 13.10.0

Platform: Ubuntu 22.04

Steps to reproduce

$ sudo npm install -g firebase-tools npm WARN deprecated [email protected]: This module is not supported, and leaks memory. Do not use it. Check out lru-cache if you want a good and tested way to coalesce async requests by a key value, which is much more comprehensive and powerful.

Of course I realise this could be a dependency of a dependency.