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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;