quran/node_modules/libphonenumber-js/es6/tools/semver-compare.js

// Copy-pasted from:
// https://github.com/substack/semver-compare/blob/master/index.js
//
// Inlining this function because some users reported issues with
// importing from `semver-compare` in a browser with ES6 "native" modules.
//
// Fixes `semver-compare` not being able to compare versions with alpha/beta/etc "tags".
// https://github.com/catamphetamine/libphonenumber-js/issues/381
export default function (a, b) {
  a = a.split('-');
  b = b.split('-');
  var pa = a[0].split('.');
  var pb = b[0].split('.');

  for (var i = 0; i < 3; i++) {
    var na = Number(pa[i]);
    var nb = Number(pb[i]);
    if (na > nb) return 1;
    if (nb > na) return -1;
    if (!isNaN(na) && isNaN(nb)) return 1;
    if (isNaN(na) && !isNaN(nb)) return -1;
  }

  if (a[1] && b[1]) {
    return a[1] > b[1] ? 1 : a[1] < b[1] ? -1 : 0;
  }

  return !a[1] && b[1] ? 1 : a[1] && !b[1] ? -1 : 0;
}
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