| 'use strict'; |
| var $ = require('../internals/export'); |
| var $findIndex = require('../internals/array-iteration').findIndex; |
| var addToUnscopables = require('../internals/add-to-unscopables'); |
| |
| var FIND_INDEX = 'findIndex'; |
| var SKIPS_HOLES = true; |
| |
| // Shouldn't skip holes |
| if (FIND_INDEX in []) Array(1)[FIND_INDEX](function () { SKIPS_HOLES = false; }); |
| |
| // `Array.prototype.findIndex` method |
| // https://tc39.github.io/ecma262/#sec-array.prototype.findindex |
| $({ target: 'Array', proto: true, forced: SKIPS_HOLES }, { |
| findIndex: function findIndex(callbackfn /* , that = undefined */) { |
| return $findIndex(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined); |
| } |
| }); |
| |
| // https://tc39.github.io/ecma262/#sec-array.prototype-@@unscopables |
| addToUnscopables(FIND_INDEX); |