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    @stdlib/utils-writable-properties-in
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    0.0.8 • Public • Published

    writablePropertiesIn

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    Return an array of an object's own and inherited writable property names and symbols.

    Installation

    npm install @stdlib/utils-writable-properties-in

    Usage

    var writablePropertiesIn = require( '@stdlib/utils-writable-properties-in' );

    writablePropertiesIn( obj )

    Returns an array of an object's own and inherited writable property names and symbols.

    var defineProperty = require( '@stdlib/utils-define-property' );
    
    var obj = {};
    
    defineProperty( obj, 'a', {
        'configurable': false,
        'enumerable': false,
        'writable': true,
        'value': 'a'
    });
    
    var props = writablePropertiesIn( obj );
    // returns [ 'a', ... ]

    Examples

    var defineProperty = require( '@stdlib/utils-define-property' );
    var hasSymbolSupport = require( '@stdlib/assert-has-symbol-support' );
    var Symbol = require( '@stdlib/symbol-ctor' );
    var writablePropertiesIn = require( '@stdlib/utils-writable-properties-in' );
    
    var hasSymbols = hasSymbolSupport();
    
    function Foo() {
        this.a = 'a';
        defineProperty( this, 'b', {
            'configurable': true,
            'enumerable': true,
            'writable': false,
            'value': 'b'
        });
        if ( hasSymbols ) {
            this[ Symbol( 'a' ) ] = 'a';
            defineProperty( this, Symbol( 'b' ), {
                'configurable': true,
                'enumerable': true,
                'writable': false,
                'value': 'b'
            });
        }
        return this;
    }
    
    Foo.prototype.foo = 'bar';
    defineProperty( Foo.prototype, 'beep', {
        'configurable': false,
        'enumerable': false,
        'writable': false,
        'value': 'boop'
    });
    if ( hasSymbols ) {
        Foo.prototype[ Symbol( 'foo' ) ] = 'bar';
        defineProperty( Foo.prototype, Symbol( 'beep' ), {
            'configurable': false,
            'enumerable': false,
            'writable': false,
            'value': 'boop'
        });
    }
    
    var obj = new Foo();
    var props = writablePropertiesIn( obj );
    // e.g., returns [ 'a', 'foo', ... ]

    See Also


    Notice

    This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

    For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.

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    License

    See LICENSE.

    Copyright

    Copyright © 2016-2022. The Stdlib Authors.

    Install

    npm i @stdlib/utils-writable-properties-in

    Homepage

    stdlib.io

    DownloadsWeekly Downloads

    31

    Version

    0.0.8

    License

    Apache-2.0

    Unpacked Size

    25.8 kB

    Total Files

    9

    Last publish

    Collaborators

    • stdlib-bot
    • kgryte
    • planeshifter
    • rreusser