function _assertThisInitialized(self) {
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}
function _classCallCheck(instance, Constructor) {
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        throw new TypeError("Cannot call a class as a function");
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}
function _defineProperties(target, props) {
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        var descriptor = props[i];
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        descriptor.configurable = true;
        if ("value" in descriptor) descriptor.writable = true;
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    }
}
function _createClass(Constructor, protoProps, staticProps) {
    if (protoProps) _defineProperties(Constructor.prototype, protoProps);
    if (staticProps) _defineProperties(Constructor, staticProps);
    return Constructor;
}
function _getPrototypeOf(o) {
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        return o.__proto__ || Object.getPrototypeOf(o);
    };
    return _getPrototypeOf(o);
}
function _inherits(subClass, superClass) {
    if (typeof superClass !== "function" && superClass !== null) {
        throw new TypeError("Super expression must either be null or a function");
    }
    subClass.prototype = Object.create(superClass && superClass.prototype, {
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            value: subClass,
            writable: true,
            configurable: true
        }
    });
    if (superClass) _setPrototypeOf(subClass, superClass);
}
function _possibleConstructorReturn(self, call) {
    if (call && (_typeof(call) === "object" || typeof call === "function")) {
        return call;
    }
    return _assertThisInitialized(self);
}
function _setPrototypeOf(o, p) {
    _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
        o.__proto__ = p;
        return o;
    };
    return _setPrototypeOf(o, p);
}
var _typeof = function(obj) {
    return obj && typeof Symbol !== "undefined" && obj.constructor === Symbol ? "symbol" : typeof obj;
};
var Bar = function Bar() {
    "use strict";
    _classCallCheck(this, Bar);
};
var Foo = /*#__PURE__*/ function(Bar) {
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    _inherits(Foo, Bar);
    function Foo() {
        _classCallCheck(this, Foo);
        return _possibleConstructorReturn(this, _getPrototypeOf(Foo).apply(this, arguments));
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    return Foo;
}(Bar);
var tmp = Symbol.iterator;
var FooIterator = /*#__PURE__*/ function() {
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    function FooIterator() {
        _classCallCheck(this, FooIterator);
    }
    _createClass(FooIterator, [
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            key: "next",
            value: function next() {
                return {
                    value: new Foo,
                    done: false
                };
            }
        },
        {
            key: tmp,
            value: function value() {
                return this;
            }
        }
    ]);
    return FooIterator;
}();
var a, b;
var ref;
ref = new FooIterator, a = ref[0], b = ref[1], ref;