1'use strict'; 2// 22.1.3.9 Array.prototype.findIndex(predicate, thisArg = undefined) 3var $export = require('./_export'); 4var $find = require('./_array-methods')(6); 5var KEY = 'findIndex'; 6var forced = true; 7// Shouldn't skip holes 8if (KEY in []) Array(1)[KEY](function () { forced = false; }); 9$export($export.P + $export.F * forced, 'Array', { 10 findIndex: function findIndex(callbackfn /* , that = undefined */) { 11 return $find(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined); 12 } 13}); 14require('./_add-to-unscopables')(KEY); 15