'use strict';

var ymaps$1 = {
  load: function load() {
    var src = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '//api-maps.yandex.ru/2.1/?lang=en_RU';

    var getNsParamValue = function getNsParamValue() {
      var results = src.match(/[\\?&]ns=([^&#]*)/);
      return results === null ? '' : decodeURIComponent(results[1].replace(/\+/g, ' '));
    };

    if (!this.promise) {
      this.promise = new Promise(function (resolve, reject) {
        var scriptElement = document.createElement('script');
        scriptElement.onload = resolve;
        scriptElement.onerror = reject;
        scriptElement.type = 'text/javascript';
        scriptElement.src = src;
        document.body.appendChild(scriptElement);
      }).then(function () {
        var ns = getNsParamValue();

        if (ns && ns !== 'ymaps') {
          (0, eval)("var ymaps = ".concat(ns, ";"));
        }

        return new Promise(function (resolve) {
          return ymaps.ready(resolve);
        });
      });
    }

    return this.promise;
  }
};

module.exports = ymaps$1;