$ node -e "console.log(require('semver').Range('>3'))" Range { options: { loose: false, includePrerelease: false }, loose: false, includePrerelease: false, raw: '>3', set: [ [ [Comparator] ] ], range: '>=4.0.0' } 

This behavior of the greater than range with missing minor/patch is not documented. Based on the documentation I had expected that >3 and >3.0.0 were the same range.

A similar thing happens with >3.0 becoming >=3.1.0, though >3.0.0 remains >3.0.0.