A version is a set of numbers that identify a unique evolution of a system. 🏃 📼 📦 🌔 📒

Methods as separate packages:

• @extra-version/next: use rollup to bundle this es module.
• @extra-version/next.min: use in browser (browserify, uglify-js).

Most of the ideas are from Semantic versioning by Tom Preston, and semver by Isaac Schlueter.

Stability: Experimental.

const version = require('extra-version');
// import * as version from 'extra-version';
// import * as version from 'https://unpkg.com/[email protected]/index.mjs'; (deno)

var x = version.from('v1.2.3.4');
x.toString();
// '1.2.3+4'

var x = version.from('0.2');
version.isUnstable(x);
// true

var x = version.from('1.2');
var y = version.from('1.2.3');
version.compare(x, y);
// -3

var x = version.from('1.2');
var y = version.next(x, version.MINOR);
y.toString();
// '1.3.0'

reference

Method	Action
is	Checks if value is version.
isUnstable	Checks if version is major 0, or pre-release.
from	Converts value to version.
parse	Converts string to version.
stringify	Converts version to string.
compare	Compares two versions.
isEqual	Checks if two versions are equal.
next	Gives the next version.
MAJOR	Defines first major version. (1.0.0)
MINOR	Defines first minor version. (0.1.0)
PATCH	Defines first patch version. (0.0.1)
RVERSION	Regular expression to check a semver string.