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reExtname
Regular expression to capture a filename extension.
Installation
npm install @stdlib/regexp-extnameAlternatively,
- To load the package in a website via a
scripttag without installation and bundlers, use the ES Module available on theesmbranch (see README). - If you are using Deno, visit the
denobranch (see README for usage intructions). - For use in Observable, or in browser/node environments, use the Universal Module Definition (UMD) build available on the
umdbranch (see README).
The branches.md file summarizes the available branches and displays a diagram illustrating their relationships.
To view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.
Usage
var reExtname = require( '@stdlib/regexp-extname' );reExtname( [platform] )
Returns a regular expression to capture a filename extension.
var RE = reExtname();
// returns <RegExp>
RE = reExtname( 'posix' );
// returns <RegExp>
var ext = RE.exec( '/foo/bar/index.js' )[ 1 ];
// returns '.js'
RE = reExtname( 'win32' );
// returns <RegExp>
ext = RE.exec( 'C:\\foo\\bar\\index.js' )[ 1 ];
// returns '.js'reExtname.REGEXP
Regular expression to capture a filename extension.
var bool = ( reExtname.REGEXP.toString() === reExtname().toString() );
// returns truereExtname.REGEXP_POSIX
Regular expression to capture a POSIX filename extension.
var ext = reExtname.REGEXP_POSIX.exec( '/foo/bar/index.js' )[ 1 ];
// returns '.js'reExtname.REGEXP_WIN32
Regular expression to capture a Windows filename extension.
var ext = reExtname.REGEXP_WIN32.exec( 'C:\\foo\\bar\\index.js' )[ 1 ];
// returns '.js'Notes
- The as
REGEXPexported regular expression is platform-dependent. If the current process is running on Windows,REGEXP === REGEXP_WIN32; otherwise,REGEXP === REGEXP_POSIX.
Examples
var reExtname = require( '@stdlib/regexp-extname' );
var RE_EXTNAME = reExtname();
var ext;
// Assuming a POSIX platform...
ext = RE_EXTNAME.exec( '/foo/bar/index.js' )[ 1 ];
// returns '.js'
ext = reExtname.REGEXP_WIN32.exec( '/foo/bar/home.html' )[ 1 ];
// returns '.html'
ext = reExtname.REGEXP_WIN32.exec( 'C:\\foo\\bar\\home.html' )[ 1 ];
// returns '.html'See Also
-
@stdlib/regexp-extname-posix: return a regular expression to capture a POSIX filename extension. -
@stdlib/regexp-extname-windows: return a regular expression to capture a Windows filename extension. -
@stdlib/utils-extname: return a filename extension.
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.
Community
License
See LICENSE.
Copyright
Copyright © 2016-2024. The Stdlib Authors.
