fix: consider equality in publish dist tag check error message

[reggi]

Currently the message for if it's the same version is wrong:

Cannot implicitly apply the "latest" tag because published version 1.1.12 is higher than the new version 1.1.12. You must specify a tag using --tag.

[ljharb]

It seems like this entire message shouldn't be triggering if the version is equal - isn't there pre-existing logic for "you can't publish a version that's already published" that should be hit?

[reggi]

I was thinking of this as a layer over the registry logic, the same that the front end and back end would implement overlapping validation. I think having this error thrown in the cli here is acceptable rather than intentionally letting them slip through and having the registry handle it, helps with debugging with --dry-run too.

[ljharb]

In that case I'd expect a totally separate error - not about "latest" but about re-publishing an already-published version.

[ljharb]

LGTM!

[wraithgar]

isn't there pre-existing logic for "you can't publish a version that's already published" that should be hit?

Until npm 11 the cli did not have this information on publish. It send the new packument to the registry and all errors happened there.

[hashtagchris]

isn't there pre-existing logic for "you can't publish a version that's already published" that should be hit?

Until npm 11 the cli did not have this information on publish. It send the new packument to the registry and all errors happened there.

If anyone else is curious, the fetch of the existing packument was added in e2f4455 (and then updated in this PR)