.config/coc/extensions/node_modules/coc-prettier/node_modules/core-js/modules/es.array.at.js

   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 // `Array.prototype.at` method
   9 // https://github.com/tc39/proposal-relative-indexing-method
  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');