--- /dev/null
+"use strict";
+
+exports.__esModule = true;
+
+var _typeof2 = require("../helpers/typeof");
+
+var _typeof3 = _interopRequireDefault(_typeof2);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+exports.default = function (self, call) {
+ if (!self) {
+ throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
+ }
+
+ return call && ((typeof call === "undefined" ? "undefined" : (0, _typeof3.default)(call)) === "object" || typeof call === "function") ? call : self;
+};
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