TypeError: Class extends value undefined is not a constructor or null - fs-minipass

[Federico Ballarini]

Problem

Short Version

In am on OSX. I use n with success from years. After installing node 20.2.0 I started getting a problem with npm and now I can only run npm if I downgrade to node 18.16.0.

Long Version

After installing with n node 20.2.0 (I was on 20.1.0), when I try using npm I get:

/usr/local/lib/node_modules/npm/lib/cli.js:35
    throw err
    ^

TypeError: Class extends value undefined is not a constructor or null
    at Object.<anonymous> (/usr/local/lib/node_modules/npm/node_modules/fs-minipass/lib/index.js:136:4)

I tried reverting to 20.1.0, prune, change to another node 20, another node 19 but no luck.
I don't know how can I properly solve the problem, right now can only work downgrading to last node 18 that works fine.

Configuration Details

$ n --version
2.1.10

$ command -v node
/usr/local/bin/node

$ node -p process.platform
darwin

[John Gee]

That is an old version of n. Because of problems with npm when changing Node.js version we now delete the npm folder before copying in the new version. What was happening was pieces of a different version of npm were being left behind and causing problems. See #470 for more details.

Try upgrading n and trying again.

[John Gee]

An answer was provided, and no further activity in a month. Closing this as resolved.

Feel free to open a new issue if it comes up again, with new information and renewed interest.