Changes to Node.js `exports` specification

[merceyz]

Node.js has changed their exports specification deprecating trailing slash pattern mappings in nodejs/node#40039 and added support for pattern trailers in nodejs/node#39635 so some changes might be required.

[lukeed]

This is already supported. The deprecated syntax will continue to be supported because it's still widely used and Node also supports it (and will for a long time as it's part of LTS)