It seems that this past week @[email protected] released @misskey-dev/node-http-message-signatures, which contains some breaking changes.

At this time I am unsure what the difference is between joinmisskey/node-http-message-signatures and misskey-dev/node-http-message-signatures.

The latter is still dormant, but the former has received quite a bit of work as of this past week.

NodeBB has its RFC 9421 implementation built using v0.0.11 of this package.