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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 getOwnPropertySymbols = require( '@stdlib/utils/property-symbols' );
var isWritableProperty = require( '@stdlib/assert/is-writable-property' );
// MAIN //
/**
* Returns an array of an object's own writable symbol properties.
*
* @param {*} value - input object
* @returns {Array} a list of own writable symbol properties
*
* @example
* var symbols = writablePropertySymbols( {} );
*/
function writablePropertySymbols( value ) {
var symbols;
var i;
var n;
if ( value === null || value === void 0 ) {
return [];
}
symbols = getOwnPropertySymbols( Object( value ) );
n = 0;
for ( i = 0; i < symbols.length; i++ ) {
if ( isWritableProperty( value, symbols[ i ] ) ) {
symbols[ n ] = symbols[ i ];
n += 1;
}
}
symbols.length = n;
return symbols;
}
// EXPORTS //
module.exports = writablePropertySymbols;
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