text: /**
  * @license Apache-2.0
  *
  * Copyright (c) 2018 The Stdlib Authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *    http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
  
  'use strict';
  
  // MODULES //
  
  var hasArgumentsBug = require( './has_arguments_bug.js' );
  var HAS_BUILTIN = require( './has_builtin.js' );
  var builtin = require( './builtin.js' );
  var wrapper = require( './builtin_wrapper.js' );
  var polyfill = require( './polyfill.js' );
  
  
  // MAIN //
  
  /**
  * Returns an array of an object's own enumerable property names.
  *
  * @name keys
  * @type {Function}
  * @param {*} value - input object
  * @returns {Array} a list of own enumerable property names
  *
  * @example
  * var obj = {
  *     'beep': 'boop',
  *     'foo': 3.14
  * };
  *
  * var k = keys( obj );
  * // e.g., returns [ 'beep', 'foo' ]
  */
  var keys;
  if ( HAS_BUILTIN ) {
  	if ( hasArgumentsBug() ) {
  		keys = wrapper;
  	} else {
  		keys = builtin;
  	}
  } else {
  	keys = polyfill;
  }
  
  
  // EXPORTS //
  
  module.exports = keys;
  