@stdlib/utils-property-symbols-in
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    0.0.6 • Public • Published

    propertySymbolsIn

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    Return an array of an object's own and inherited symbol properties.

    Installation

    npm install @stdlib/utils-property-symbols-in

    Usage

    var propertySymbolsIn = require( '@stdlib/utils-property-symbols-in' );

    propertySymbolsIn( obj )

    Returns an array of an object's own and inherited symbol properties.

    var symbols = propertySymbolsIn( [] );

    Notes

    • In contrast to the built-in Object.getOwnPropertySymbols(), if provided null or undefined, the function returns an empty array, rather than throwing an error.

    Examples

    var hasSymbolSupport = require( '@stdlib/assert-has-symbol-support' );
    var Symbol = require( '@stdlib/symbol-ctor' );
    var propertySymbolsIn = require( '@stdlib/utils-property-symbols-in' );
    
    var hasSymbols;
    var symbols;
    var obj;
    
    hasSymbols = hasSymbolSupport();
    
    function Foo() {
        if ( hasSymbols ) {
            this[ Symbol( 'beep' ) ] = 'boop';
        }
        return this;
    }
    
    if ( hasSymbols ) {
        Foo.prototype[ Symbol( 'foo' ) ] = 'bar';
    }
    
    obj = new Foo();
    symbols = propertySymbolsIn( obj );
    
    console.log( symbols );

    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 © 2016-2021. The Stdlib Authors.

    Install

    npm i @stdlib/utils-property-symbols-in

    Homepage

    stdlib.io

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    7

    Version

    0.0.6

    License

    Apache-2.0

    Unpacked Size

    36 kB

    Total Files

    9

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    Collaborators

    • stdlib-bot
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