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var baseTimes = require('./_baseTimes'),
isArguments = require('./isArguments'),
isArray = require('./isArray'),
isLength = require('./isLength'),
isString = require('./isString');
/**
* Creates an array of index keys for `object` values of arrays,
* `arguments` objects, and strings, otherwise `null` is returned.
*
* @private
* @param {Object} object The object to query.
* @returns {Array|null} Returns index keys, else `null`.
*/
function indexKeys(object) {
var length = object ? object.length : undefined;
if (isLength(length) &&
(isArray(object) || isString(object) || isArguments(object))) {
return baseTimes(length, String);
}
return null;
}
module.exports = indexKeys;
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