es6.array.find-index.js
546 Bytes
'use strict';
// 22.1.3.9 Array.prototype.findIndex(predicate, thisArg = undefined)
var $export = require('./$.export')
, $find = require('./$.array-methods')(6)
, KEY = 'findIndex'
, forced = true;
// Shouldn't skip holes
if(KEY in [])Array(1)[KEY](function(){ forced = false; });
$export($export.P + $export.F * forced, 'Array', {
findIndex: function findIndex(callbackfn/*, that = undefined */){
return $find(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
}
});
require('./$.add-to-unscopables')(KEY);