NPM satisfies issue with optional version

[piotrooo]

What I am doing wrong?

new Semver("2", SemverType.NPM).isGreaterThanOrEqualTo("2.x"); // true

new Semver("2", SemverType.NPM).isGreaterThanOrEqualTo("2"); // true
new Semver("2", SemverType.NPM).isGreaterThanOrEqualTo("2.0"); // true
new Semver("2", SemverType.NPM).isGreaterThanOrEqualTo("2.0.0"); // false ?

new Semver("2", SemverType.NPM).isGreaterThanOrEqualTo("2.0.0"); // false ?
new Semver("2.0", SemverType.NPM).isGreaterThanOrEqualTo("2.0.0"); // false ?
new Semver("2.0.0", SemverType.NPM).isGreaterThanOrEqualTo("2.0.0"); // true

new Semver("2", SemverType.NPM).satisfies(">=2.0.0"); // false ?
new Semver("2.0", SemverType.NPM).satisfies(">=2.0.0"); // false ?
new Semver("2.0", SemverType.NPM).satisfies("2.0.x"); // false ?
new Semver("2.0.0", SemverType.NPM).satisfies("2.0.x"); // true !

new Semver("2", SemverType.NPM).satisfies(">=2.0"); // true
new Semver("2.0", SemverType.NPM).satisfies(">=2.0"); // true
new Semver("2.0.0", SemverType.NPM).satisfies(">=2.0"); // true

new Semver("2", SemverType.NPM).satisfies(">=2"); // true
new Semver("2.0", SemverType.NPM).satisfies(">=2"); // true
new Semver("2.0.0", SemverType.NPM).satisfies(">=2"); // true

new Semver("2", SemverType.NPM).satisfies("~2"); // false ?
new Semver("2.0", SemverType.NPM).satisfies("~2"); // false ?
new Semver("2.0.0", SemverType.NPM).satisfies("~2"); // true !

Original issue: vdurmont/semver4j#48