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							- 'use strict';
 
- var $ = require('../internals/export');
 
- var DESCRIPTORS = require('../internals/descriptors');
 
- var FORCED = require('../internals/object-prototype-accessors-forced');
 
- var toObject = require('../internals/to-object');
 
- var toPropertyKey = require('../internals/to-property-key');
 
- var getPrototypeOf = require('../internals/object-get-prototype-of');
 
- var getOwnPropertyDescriptor = require('../internals/object-get-own-property-descriptor').f;
 
- // `Object.prototype.__lookupSetter__` method
 
- // https://tc39.es/ecma262/#sec-object.prototype.__lookupSetter__
 
- if (DESCRIPTORS) {
 
-   $({ target: 'Object', proto: true, forced: FORCED }, {
 
-     __lookupSetter__: function __lookupSetter__(P) {
 
-       var O = toObject(this);
 
-       var key = toPropertyKey(P);
 
-       var desc;
 
-       do {
 
-         if (desc = getOwnPropertyDescriptor(O, key)) return desc.set;
 
-       } while (O = getPrototypeOf(O));
 
-     }
 
-   });
 
- }
 
 
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