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    @stdlib/utils-function-name
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    0.0.7 • Public • Published

    Function Name

    NPM version Build Status Coverage Status dependencies

    Determine a function's name.

    Installation

    npm install @stdlib/utils-function-name

    Usage

    var functionName = require( '@stdlib/utils-function-name' );

    functionName( fcn )

    Returns the name of a function.

    var v = functionName( Math.sqrt );
    // returns 'sqrt'

    If provided an anonymous function, the function returns an empty string or the string "anonymous".

    var v = functionName( function () {} );
    // returns '' || 'anonymous'

    If provided a value which is not a function, the function throws a TypeError.

    try {
        functionName( 'beep' );
        // throws error...
    } catch ( err ) {
        console.error( err );
    }

    Notes

    Examples

    var Float64Array = require( '@stdlib/array-float64' );
    var Buffer = require( '@stdlib/buffer-ctor' );
    var Number = require( '@stdlib/number-ctor' );
    var functionName = require( '@stdlib/utils-function-name' );
    
    var v = functionName( Math.sqrt );
    // returns 'sqrt'
    
    v = functionName( Float64Array );
    // returns 'Float64Array'
    
    v = functionName( Buffer );
    // returns 'Buffer'
    
    v = functionName( Date );
    // returns 'Date'
    
    v = functionName( String );
    // returns 'String'
    
    v = functionName( Boolean );
    // returns 'Boolean'
    
    v = functionName( Function );
    // returns 'Function'
    
    v = functionName( Number );
    // returns 'Number'
    
    v = functionName( function foo() {} );
    // returns 'foo'
    
    v = functionName( function () {} );
    // returns '' || 'anonymous'

    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-function-name

    Homepage

    stdlib.io

    DownloadsWeekly Downloads

    4,158

    Version

    0.0.7

    License

    Apache-2.0

    Unpacked Size

    37 kB

    Total Files

    9

    Last publish

    Collaborators

    • stdlib-bot
    • kgryte
    • planeshifter
    • rreusser