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* @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 getOwnPropertyNames = require( '@stdlib/utils/property-names' );
var isNonEnumerableProperty = require( '@stdlib/assert/is-nonenumerable-property' );
// MAIN //
/**
* Returns an array of an object's own non-enumerable property names.
*
* @param {*} value - input object
* @returns {Array} a list of own non-enumerable property names
*
* @example
* var defineProperty = require( '@stdlib/utils/define-property' );
*
* var obj = {};
*
* defineProperty( obj, 'beep', {
* 'configurable': false,
* 'enumerable': false,
* 'writable': false,
* 'value': 'boop'
* });
*
* var keys = nonEnumerablePropertyNames( obj );
* // returns [ 'beep' ]
*/
function nonEnumerablePropertyNames( value ) { // eslint-disable-line id-length
var names;
var i;
var n;
if ( value === null || value === void 0 ) {
return [];
}
names = getOwnPropertyNames( Object( value ) );
n = 0;
for ( i = 0; i < names.length; i++ ) {
if ( isNonEnumerableProperty( value, names[ i ] ) ) {
names[ n ] = names[ i ];
n += 1;
}
}
names.length = n;
return names;
}
// EXPORTS //
module.exports = nonEnumerablePropertyNames;
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