Semver splitting

split-semver.js

"use strict";

const VALID_SEMVER = /^(\d+\.\d+\.\d+)(-[a-z1-9][a-z0-9]*(?:\.[a-z0-9]+)*)*(\+[a-z0-9]+(?:\.[a-z0-9]+)*)*$/i

let lib = module.exports = {

    splitVersion: function(ver) {
        let [,
            version,
            prerelease,
            meta
        ] = VALID_SEMVER.exec(ver);
        if (prerelease) {
            prerelease = prerelease.replace(/^-/, "");
        }
        if (meta) {
            meta = meta.replace(/^\+/, "");
        }
        return {
            version, prerelease, meta
        };
    }

};

console.log(lib.splitVersion("1.0.0-beta+exp.sha.5114f85"));
console.log(lib.splitVersion("1.0.0-x.7.z.92"));
console.log(lib.splitVersion("1.0.0+x.7.z.92"));