| var isObject = require('./isObject'), | |
|     isPrototype = require('./_isPrototype'), | |
|     nativeKeysIn = require('./_nativeKeysIn'); | |
| 
 | |
| /** Used for built-in method references. */ | |
| var objectProto = Object.prototype; | |
| 
 | |
| /** Used to check objects for own properties. */ | |
| var hasOwnProperty = objectProto.hasOwnProperty; | |
| 
 | |
| /** | |
|  * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense. | |
|  * | |
|  * @private | |
|  * @param {Object} object The object to query. | |
|  * @returns {Array} Returns the array of property names. | |
|  */ | |
| function baseKeysIn(object) { | |
|   if (!isObject(object)) { | |
|     return nativeKeysIn(object); | |
|   } | |
|   var isProto = isPrototype(object), | |
|       result = []; | |
| 
 | |
|   for (var key in object) { | |
|     if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) { | |
|       result.push(key); | |
|     } | |
|   } | |
|   return result; | |
| } | |
| 
 | |
| module.exports = baseKeysIn;
 |