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node_modules/core-js/modules/es.object.proto.js

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+'use strict';
+var DESCRIPTORS = require('../internals/descriptors');
+var defineBuiltInAccessor = require('../internals/define-built-in-accessor');
+var isObject = require('../internals/is-object');
+var toObject = require('../internals/to-object');
+var requireObjectCoercible = require('../internals/require-object-coercible');
+
+// eslint-disable-next-line es/no-object-getprototypeof -- safe
+var getPrototypeOf = Object.getPrototypeOf;
+// eslint-disable-next-line es/no-object-setprototypeof -- safe
+var setPrototypeOf = Object.setPrototypeOf;
+var ObjectPrototype = Object.prototype;
+var PROTO = '__proto__';
+
+// `Object.prototype.__proto__` accessor
+// https://tc39.es/ecma262/#sec-object.prototype.__proto__
+if (DESCRIPTORS && getPrototypeOf && setPrototypeOf && !(PROTO in ObjectPrototype)) try {
+  defineBuiltInAccessor(ObjectPrototype, PROTO, {
+    configurable: true,
+    get: function __proto__() {
+      return getPrototypeOf(toObject(this));
+    },
+    set: function __proto__(proto) {
+      var O = requireObjectCoercible(this);
+      if (!isObject(proto) && proto !== null || !isObject(O)) return;
+      setPrototypeOf(O, proto);
+    }
+  });
+} catch (error) { /* empty */ }