feat:node-modules

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

@@ -0,0 +1,9 @@
+'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');
+};