| 123456789101112131415161718192021222324252627 | 'use strict';// TODO: Remove from `core-js@4`var DESCRIPTORS = require('../internals/descriptors');var addToUnscopables = require('../internals/add-to-unscopables');var toObject = require('../internals/to-object');var lengthOfArrayLike = require('../internals/length-of-array-like');var defineBuiltInAccessor = require('../internals/define-built-in-accessor');// `Array.prototype.lastIndex` accessor// https://github.com/keithamus/proposal-array-lastif (DESCRIPTORS) {  defineBuiltInAccessor(Array.prototype, 'lastItem', {    configurable: true,    get: function lastItem() {      var O = toObject(this);      var len = lengthOfArrayLike(O);      return len == 0 ? undefined : O[len - 1];    },    set: function lastItem(value) {      var O = toObject(this);      var len = lengthOfArrayLike(O);      return O[len == 0 ? 0 : len - 1] = value;    }  });  addToUnscopables('lastItem');}
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