time-to-botec/squiggle/node_modules/@stdlib/utils/writable-properties/lib/main.js

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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 propertyNames = require( './../../property-names' );
var propertySymbols = require( './../../property-symbols' );
var isWritable = require( '@stdlib/assert/is-writable-property' );
// MAIN //
/**
* Returns an array of an object's own writable property names and symbols.
*
* @param {*} value - input object
* @returns {Array} a list of own property writable names and symbols
*
* @example
* var obj = {
* 'beep': 'boop',
* 'foo': 3.14
* };
*
* var props = writableProperties( obj );
* // e.g., returns [ 'beep', 'foo' ]
*/
function writableProperties( value ) {
var out;
var tmp;
var n;
var i;
out = propertyNames( value );
n = 0;
for ( i = 0; i < out.length; i++ ) {
if ( isWritable( value, out[ i ] ) ) {
out[ n ] = out[ i ];
n += 1;
}
}
out.length = n;
tmp = propertySymbols( value );
for ( i = 0; i < tmp.length; i++ ) {
if ( isWritable( value, tmp[ i ] ) ) {
out.push( tmp[ i ] );
}
}
return out;
}
// EXPORTS //
module.exports = writableProperties;