| 'use strict'; | 
| var $ = require('../internals/export'); | 
| var DESCRIPTORS = require('../internals/descriptors'); | 
| var FORCED = require('../internals/object-prototype-accessors-forced'); | 
| var aCallable = require('../internals/a-callable'); | 
| var toObject = require('../internals/to-object'); | 
| var definePropertyModule = require('../internals/object-define-property'); | 
|   | 
| // `Object.prototype.__defineSetter__` method | 
| // https://tc39.es/ecma262/#sec-object.prototype.__defineSetter__ | 
| if (DESCRIPTORS) { | 
|   $({ target: 'Object', proto: true, forced: FORCED }, { | 
|     __defineSetter__: function __defineSetter__(P, setter) { | 
|       definePropertyModule.f(toObject(this), P, { set: aCallable(setter), enumerable: true, configurable: true }); | 
|     } | 
|   }); | 
| } |