text: function _classCallCheck(instance, Constructor) {
      if (!(instance instanceof Constructor)) throw new TypeError("Cannot call a class as a function");
  }
  function _defineProperties(target, props) {
      for(var i = 0; i < props.length; i++){
          var descriptor = props[i];
          descriptor.enumerable = descriptor.enumerable || !1, descriptor.configurable = !0, "value" in descriptor && (descriptor.writable = !0), Object.defineProperty(target, descriptor.key, descriptor);
      }
  }
  function _getPrototypeOf(o) {
      return _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
          return o.__proto__ || Object.getPrototypeOf(o);
      }, _getPrototypeOf(o);
  }
  function _setPrototypeOf(o, p) {
      return _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
          return o.__proto__ = p, o;
      }, _setPrototypeOf(o, p);
  }
  var A = function() {
      "use strict";
      var Constructor, protoProps, staticProps;
      function A() {
          _classCallCheck(this, A);
      }
      return protoProps = [
          {
              key: "p",
              get: function() {
                  return "oh no";
              }
          }
      ], _defineProperties((Constructor = A).prototype, protoProps), staticProps && _defineProperties(Constructor, staticProps), A;
  }(), B = function(A) {
      "use strict";
      !function(subClass, superClass) {
          if ("function" != typeof superClass && null !== superClass) throw new TypeError("Super expression must either be null or a function");
          subClass.prototype = Object.create(superClass && superClass.prototype, {
              constructor: {
                  value: subClass,
                  writable: !0,
                  configurable: !0
              }
          }), superClass && _setPrototypeOf(subClass, superClass);
      }(B, A);
      var Derived, hasNativeReflectConstruct, _super = (Derived = B, hasNativeReflectConstruct = function() {
          if ("undefined" == typeof Reflect || !Reflect.construct) return !1;
          if (Reflect.construct.sham) return !1;
          if ("function" == typeof Proxy) return !0;
          try {
              return Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function() {})), !0;
          } catch (e) {
              return !1;
          }
      }(), function() {
          var obj, self, call, result, Super = _getPrototypeOf(Derived);
          if (hasNativeReflectConstruct) {
              var NewTarget = _getPrototypeOf(this).constructor;
              result = Reflect.construct(Super, arguments, NewTarget);
          } else result = Super.apply(this, arguments);
          return self = this, (call = result) && ("object" == ((obj = call) && "undefined" != typeof Symbol && obj.constructor === Symbol ? "symbol" : typeof obj) || "function" == typeof call) ? call : (function(self) {
              if (void 0 === self) throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
              return self;
          })(self);
      });
      function B(p) {
          var _this;
          return _classCallCheck(this, B), (_this = _super.call(this)).p = p, _this;
      }
      return B;
  }(A);
  