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node_modules/core-js/internals/an-instance.js

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+'use strict';
+var isPrototypeOf = require('../internals/object-is-prototype-of');
+
+var $TypeError = TypeError;
+
+module.exports = function (it, Prototype) {
+  if (isPrototypeOf(Prototype, it)) return it;
+  throw new $TypeError('Incorrect invocation');
+};