Anything older than Node v22 is end-of-life, and doesn't get any more
support outside of commercial support.
See https://endoflife.date/nodejs
The current code is still compatible with Node v18.20 and up though,
which switched from import assertions (`assert` keyword) to import
attributes (`with` keyword).
See https://nodejs.org/en/blog/release/v18.20.0
We can't go higher than v22 yet due to certain dependencies depending
on obsolete behavior and `node` command line flags. For instance, the
current version of `argon2-browser` (which is 4 years old) breaks on
Node's native `fetch` behavior, which used to be experimental, but is
now mainstream, and can no longer be disabled in Node v23 and up.
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