why don't package version found with npm: specifier match the version on npm site?

[bkerin]

If I say:

import { BetterSqlite3Adapter } from "npm:lucia-auth/adapter-sqlite"

then poke around in ~/.cache/deno/npm I find that the version installed is 1.8.0, so I can say:

import { BetterSqlite3Adapter } from "npm:lucia-auth@1.8.0/adapter-sqlite"

and it works. The odd thing is that 1.8. doesn't even show up in the version history on https://www.npmjs.com/package/@lucia-auth/adapter-sqlite.
The current version there appears to be 3.0.1, but using that in the npm: specifier result in a "could not find package" error.

Is there some description somewhere of where the version in npm: specifiers are coming from?

[dsherret]

Note that the link you provided is for the @lucia-auth/adapter-sqlite and what's being imported is lucia-auth, which has a deprecated 1.8.0 version that indeed exists: https://www.npmjs.com/package/lucia-auth?activeTab=versions