2 var $ = require('../internals/export');
3 var DESCRIPTORS = require('../internals/descriptors');
4 var FORCED = require('../internals/object-prototype-accessors-forced');
5 var toObject = require('../internals/to-object');
6 var aFunction = require('../internals/a-function');
7 var definePropertyModule = require('../internals/object-define-property');
9 // `Object.prototype.__defineSetter__` method
10 // https://tc39.github.io/ecma262/#sec-object.prototype.__defineSetter__
12 $({ target: 'Object', proto: true, forced: FORCED }, {
13 __defineSetter__: function __defineSetter__(P, setter) {
14 definePropertyModule.f(toObject(this), P, { set: aFunction(setter), enumerable: true, configurable: true });