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| "use strict";
|
| var toPosInt = require("../../number/to-pos-integer")
| , value = require("../../object/valid-value")
| , objHasOwnProperty = Object.prototype.hasOwnProperty;
|
| module.exports = function () {
| var i, length;
| if (!(length = toPosInt(value(this).length))) return null;
| i = length - 1;
| while (!objHasOwnProperty.call(this, i)) {
| if (--i === -1) return null;
| }
| return i;
| };
|
|
