Implement all semver methods

[LucianBuzzo]

• valid(v): Return the parsed version, or null if it's not valid.

• inc(v, release): Return the version incremented by the release type (major, premajor, minor, preminor, patch, prepatch, or prerelease), or null if it's not valid

• prerelease(v): Returns an array of prerelease components, or null if none exist. Example: prerelease('1.2.3-alpha.1') -> ['alpha', 1]

• major(v): Return the major version number.

• minor(v): Return the minor version number.

• patch(v): Return the patch version number.

• gt(v1, v2): v1 > v2

• gte(v1, v2): v1 >= v2

• lt(v1, v2): v1 < v2

• lte(v1, v2): v1 <= v2

• eq(v1, v2): v1 == v2 This is true if they're logically equivalent, even if they're not the exact same string. You already know how to compare strings.

• neq(v1, v2): v1 != v2 The opposite of eq.

• cmp(v1, comparator, v2): Pass in a comparison string, and it'll call the corresponding function above. "===" and "!==" do simple string comparison, but are included for completeness. Throws if an invalid comparison string is provided.

• compare(v1, v2): Return 0 if v1 == v2, or 1 if v1 is greater, or -1 if v2 is greater. Sorts in ascending order if passed to Array.sort().

• rcompare(v1, v2): The reverse of compare. Sorts an array of versions in descending order when passed to Array.sort().

• diff(v1, v2): Returns difference between two versions by the release type (major, premajor, minor, preminor, patch, prepatch, or prerelease), or null if the versions are the same.

• validRange(range): Return the valid range or null if it's not valid

• satisfies(version, range): Return true if the version satisfies the range.

• maxSatisfying(versions, range): Return the highest version in the list that satisfies the range, or null if none of them do.

• minSatisfying(versions, range): Return the lowest version in the list that satisfies the range, or null if none of them do.

• gtr(version, range): Return true if version is greater than all the versions possible in the range.

• ltr(version, range): Return true if version is less than all the versions possible in the range.

• outside(version, range, hilo): Return true if the version is outside the bounds of the range in either the high or low direction. The hilo argument must be either the string '>' or '<'. (This is the function called by gtr and ltr.)

[LucianBuzzo]

Methods used by the SDK

• prerelease
• maxSatisfying
• rcompare
• parse
• lt

[LucianBuzzo]

Methods used by the CLI

• satisfies