← Back
Editing: es.object.lookup-getter.js
'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.__lookupGetter__` method // https://tc39.es/ecma262/#sec-object.prototype.__lookupGetter__ if (DESCRIPTORS) { $({ target: 'Object', proto: true, forced: FORCED }, { __lookupGetter__: function __lookupGetter__(P) { var O = toObject(this); var key = toPropertyKey(P); var desc; do { if (desc = getOwnPropertyDescriptor(O, key)) return desc.get; } while (O = getPrototypeOf(O)); } }); }
Save File
Cancel