Package Exports

@stdlib/regexp-extname-posix

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Readme

Filename Extension

Regular expression to capture a POSIX filename extension.

Installation

npm install @stdlib/regexp-extname-posix

Usage

var reExtnamePosix = require( '@stdlib/regexp-extname-posix' );

reExtnamePosix()

Returns a regular expression to capture a POSIX filename extension.

var RE_EXTNAME_POSIX = reExtnamePosix();
var ext = RE_EXTNAME_POSIX.exec( 'index.js' )[ 1 ];
// returns '.js'

reExtnamePosix.REGEXP

Regular expression to capture a POSIX filename extension.

var ext = reExtnamePosix.REGEXP.exec( 'index.js' )[ 1 ];
// returns '.js'

Notes

When executed against dotfile filenames (e.g., .gitignore), the regular expression does not capture the basename as a filename extension.

var ext = reExtnamePosix.REGEXP.exec( '.bash_profile' )[ 1 ];
// returns ''

ext = reExtnamePosix.REGEXP.exec( '.travis.yml' )[ 1 ];
// returns '.yml'

Examples

var reExtnamePosix = require( '@stdlib/regexp-extname-posix' );

var RE_EXTNAME_POSIX = reExtnamePosix();
var ext;

ext = RE_EXTNAME_POSIX.exec( 'index.js' )[ 1 ];
// returns '.js'

ext = RE_EXTNAME_POSIX.exec( '/foo/bar/home.html' )[ 1 ];
// returns '.html'

ext = RE_EXTNAME_POSIX.exec( 'foo/file.pdf' )[ 1 ];
// returns '.pdf'

ext = RE_EXTNAME_POSIX.exec( 'beep.' )[ 1 ];
// returns '.'

ext = RE_EXTNAME_POSIX.exec( '' )[ 1 ];
// returns ''

ext = RE_EXTNAME_POSIX.exec( '/foo/bar/file' )[ 1 ];
// returns ''

ext = RE_EXTNAME_POSIX.exec( '/foo/bar/.gitignore' )[ 1 ];
// returns ''

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.

License

See LICENSE.

@stdlib/regexp-extname-posix