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Regular expression to capture a POSIX filename extension.
import reExtnamePosix from 'https://cdn.jsdelivr.net/gh/stdlib-js/regexp-extname-posix@esm/index.mjs';You can also import the following named exports from the package:
import { REGEXP } from 'https://cdn.jsdelivr.net/gh/stdlib-js/regexp-extname-posix@esm/index.mjs';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'Regular expression to capture a POSIX filename extension.
var ext = reExtnamePosix.REGEXP.exec( 'index.js' )[ 1 ];
// returns '.js'-
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'
<!DOCTYPE html>
<html lang="en">
<body>
<script type="module">
import reExtnamePosix from 'https://cdn.jsdelivr.net/gh/stdlib-js/regexp-extname-posix@esm/index.mjs';
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 ''
</script>
</body>
</html>@stdlib/regexp-extname: return a regular expression to capture a filename extension.@stdlib/regexp-extname-windows: return a regular expression to capture a Windows filename extension.@stdlib/utils-extname: return a filename extension.
This package is part of stdlib, a standard library 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.
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See LICENSE.
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