semver-max/index.js

Find maximum (or minimum) version according to semver

'use strict';

var semver = require('semver');


var makeMax2 = function (op) {
  return function (v1, v2) {
    return semver[op](v2.clean, v1.clean) ? v2 : v1;
  };
};


var makeMax = function (op) {
  return function () {
    return []
      .filter.call(arguments, function (version) {
        return semver.valid(version, true);
      })
      .map(function (version) {
        return {
          original: version,
          clean: semver.clean(version)
        };
      })
      .reduce(makeMax2(op))
      .original;
  };
};


module.exports = (function (max) {
  max.gt = max;

  ['gte', 'lt', 'lte'].forEach(function (op) {
    max[op] = makeMax(op);
  });

  return max;
}(makeMax('gt')));