.config/coc/extensions/node_modules/coc-prettier/node_modules/core-js/modules/esnext.array.last-index.js

   1 'use strict';
   2 var DESCRIPTORS = require('../internals/descriptors');
   3 var addToUnscopables = require('../internals/add-to-unscopables');
   4 var toObject = require('../internals/to-object');
   5 var lengthOfArrayLike = require('../internals/length-of-array-like');
   6 var defineProperty = require('../internals/object-define-property').f;
   7
   8 // `Array.prototype.lastIndex` getter
   9 // https://github.com/keithamus/proposal-array-last
  10 if (DESCRIPTORS && !('lastIndex' in [])) {
  11   defineProperty(Array.prototype, 'lastIndex', {
  12     configurable: true,
  13     get: function lastIndex() {
  14       var O = toObject(this);
  15       var len = lengthOfArrayLike(O);
  16       return len == 0 ? 0 : len - 1;
  17     }
  18   });
  19
  20   addToUnscopables('lastIndex');
  21 }