Doesn't support 4-dot versions

[hopeseekr]

trafficstars

Internal error: 7 ERROR: bad semver value '10.0.0.0': expected - (dash) or + (plus) at char 6

At least in the C++ and PHP ecosystems, the fourth dot is a patch release, usually done immediately after release when minor fixes are needed.

[theory]

Sure, but that's not valid according to the standard. You can see that in the official regex. Try adding 10.0.0.0 to the "Test String" field and see it doesn't match.