(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define(['exports'], factory) :
  (global = global || self, factory(global.RegExtras = {}));
}(this, (function (exports) { 'use strict';

  /* eslint-disable node/no-unsupported-features/es-syntax */
  // We copy the regular expression so as to be able to always
  // ensure the exec expression is a global one (and thereby prevent recursion)

  /**
   *
   * @param {RegExtras} RegExtras
   * @returns {void}
   */
  function addPrototypeMethods(RegExtras) {
    RegExtras.prototype.entries = /*#__PURE__*/regeneratorRuntime.mark(function _callee(str) {
      var matches, i, regex;
      return regeneratorRuntime.wrap(function _callee$(_context) {
        while (1) {
          switch (_context.prev = _context.next) {
            case 0:
              i = 0;
              regex = RegExtras.mixinRegex(this.regex, 'g');

            case 2:
              if (!((matches = regex.exec(str)) !== null)) {
                _context.next = 7;
                break;
              }

              _context.next = 5;
              return [i++, matches];

            case 5:
              _context.next = 2;
              break;

            case 7:
            case "end":
              return _context.stop();
          }
        }
      }, _callee, this);
    });
    RegExtras.prototype.values = /*#__PURE__*/regeneratorRuntime.mark(function _callee2(str) {
      var matches, regex;
      return regeneratorRuntime.wrap(function _callee2$(_context2) {
        while (1) {
          switch (_context2.prev = _context2.next) {
            case 0:
              regex = RegExtras.mixinRegex(this.regex, 'g');

            case 1:
              if (!((matches = regex.exec(str)) !== null)) {
                _context2.next = 6;
                break;
              }

              _context2.next = 4;
              return matches;

            case 4:
              _context2.next = 1;
              break;

            case 6:
            case "end":
              return _context2.stop();
          }
        }
      }, _callee2, this);
    });
    RegExtras.prototype.keys = /*#__PURE__*/regeneratorRuntime.mark(function _callee3(str) {
      var i, regex;
      return regeneratorRuntime.wrap(function _callee3$(_context3) {
        while (1) {
          switch (_context3.prev = _context3.next) {
            case 0:
              i = 0;
              regex = RegExtras.mixinRegex(this.regex, 'g');

            case 2:
              if (!(regex.exec(str) !== null)) {
                _context3.next = 7;
                break;
              }

              _context3.next = 5;
              return i++;

            case 5:
              _context3.next = 2;
              break;

            case 7:
            case "end":
              return _context3.stop();
          }
        }
      }, _callee3, this);
    });
  }

  exports.default = addPrototypeMethods;

  Object.defineProperty(exports, '__esModule', { value: true });

})));