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						- var isPrototype = require('./_isPrototype'),
 -     nativeKeys = require('./_nativeKeys');
 - 
 - /** 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 `_.keys` 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 baseKeys(object) {
 -   if (!isPrototype(object)) {
 -     return nativeKeys(object);
 -   }
 -   var result = [];
 -   for (var key in Object(object)) {
 -     if (hasOwnProperty.call(object, key) && key != 'constructor') {
 -       result.push(key);
 -     }
 -   }
 -   return result;
 - }
 - 
 - module.exports = baseKeys;
 
 
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