Possible use cases:

• Go.mod directive
• dotnet rollForward
• Cargo?

Checking my understanding.

The new versioning will use existing methods from semver-coerced for functions like isValid, isStable and so on, which do not deal with ranges.
For the methods that deal with ranges such as : matches, isLessThanRange, etc.. we will need to treat non-range versions like 1.0.0 as ^1.0.0, and if the version is already a range no change needed.

ie.

function matches( versions, range ) {
     let newRange = range;
     if( rangeIsVersion(range) ) {
         newRange = `^${range}`
     };

     return semver-coerced.matches(versions, newRange);
}

I think that "greater than" and "less than" will be simpler primitives than "matches"