1 | 'use strict';
|
2 | var $ = require('../internals/export');
|
3 | var toObject = require('../internals/to-object');
|
4 | var lengthOfArrayLike = require('../internals/length-of-array-like');
|
5 | var toIntegerOrInfinity = require('../internals/to-integer-or-infinity');
|
6 | var addToUnscopables = require('../internals/add-to-unscopables');
|
7 |
|
8 |
|
9 |
|
10 | $({ target: 'Array', proto: true }, {
|
11 | at: function at(index) {
|
12 | var O = toObject(this);
|
13 | var len = lengthOfArrayLike(O);
|
14 | var relativeIndex = toIntegerOrInfinity(index);
|
15 | var k = relativeIndex >= 0 ? relativeIndex : len + relativeIndex;
|
16 | return (k < 0 || k >= len) ? undefined : O[k];
|
17 | }
|
18 | });
|
19 |
|
20 | addToUnscopables('at');
|