Prerelease tag warnings not working as expected

When working with prerelease tags, we've noticed that the the plugin will warn the first time when a prerelease version has been published, for example x.x.x to x.x.x-alpha.x.

However, after that when the version has been bumped to prerelease, due to https://github.com/oclif/plugin-warn-if-update-available/blob/master/src/hooks/init/check-update.ts#L27 , there seems to be an early return due to the existence of -and there appears to no longer be any warning shown for further updates whether a prerelease or not. https://github.com/oclif/plugin-warn-if-update-available/blob/master/src/hooks/init/check-update.ts#L31 seems to indicate the possibility of splitting on a - and comparing at least the first part.

We were wondering what the reasoning is for the early return or if this is a case of unfinished logic?

Thanks

Start in src/hooks/init/check-update.ts, especially lines 27 and 31 cited in the issue. Trace how prerelease versions are handled after the first warning and determine the intended comparison behavior for subsequent prerelease and stable updates. Done means the warning behavior is defined and the relevant update-check logic reflects it.