I just had a look at node-packages-generated.nix. While I didn't go through every single package basically any package that I picked out was utterly outdated. I sure hope nobody is relying on those packages and so I currently see little value in having those.

In #13103 (comment) @svanderburg comments:

The only NPM packages that should be in Nixpkgs IMO are:

• Command-line utilities/end-user programs
• Library packages that are dependencies of non-NPM packages

I would thus suggest to do exactly that: remove most of node-packages.json leaving only what falls into one of the two categories above.

It is too bad that interfacing with npm is such a flakey business so the integration cannot be automated further to allow for up to date packages with less manual work. Which is exactly the reason why the scope of included node packages should be limited.

I'm happy to provide a PR if this OK with everyone.

/cc @zimbatm @lo1tuma