Function compareVersions

compareVersions(a: string, b: string): number
Compares two dot-separated versions, ignoring any prerelease tail.
Parameters
- a: string
- b: string
Returns number
positive when a is newer than b.

Remarks
Not a semver dependency for one comparison. Prerelease ordering is out of scope: a prerelease and its release compare equal, which errs toward not nagging someone who deliberately installed a -next build.