18 lines
669 B
JavaScript
18 lines
669 B
JavaScript
'use strict';
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var $export = require('./_export')
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, toObject = require('./_to-object')
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, toPrimitive = require('./_to-primitive')
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, getPrototypeOf = require('./_object-gpo')
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, getOwnPropertyDescriptor = require('./_object-gopd').f;
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// B.2.2.5 Object.prototype.__lookupSetter__(P)
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require('./_descriptors') && $export($export.P + require('./_object-forced-pam'), 'Object', {
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__lookupSetter__: function __lookupSetter__(P){
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var O = toObject(this)
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, K = toPrimitive(P, true)
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, D;
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do {
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if(D = getOwnPropertyDescriptor(O, K))return D.set;
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} while(O = getPrototypeOf(O));
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}
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}); |