Reverse a string.
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> Reverse a string.
To use as a general utility, install the CLI package globally
``bash`
npm install -g @stdlib/string-reverse-cli
`text
Usage: reverse [options] [
Options:
-h, --help Print this message.
-V, --version Print the package version.
--split sep Delimiter for stdin data. Default: '/\\r?\\n/'.
--mode mode Type of character to return. Default: 'grapheme'.
`
- If the split separator is a [regular expression][mdn-regexp], ensure that the split option is either properly escaped or enclosed in quotes.
`bash
# Not escaped...
$ echo -n $'beep\nboop' | reverse --split /\r?\n/
# Escaped...
$ echo -n $'beep\nboop' | reverse --split /\\r?\\n/
`
- The implementation ignores trailing delimiters.
`bash`
$ reverse foobar
raboof
To use as a [standard stream][standard-streams],
`bash`
$ echo -n 'foobar' | reverse
raboof
By default, when used as a [standard stream][standard-streams], the implementation assumes newline-delimited data. To specify an alternative delimiter, set the split option.
`bash`
$ echo -n 'foobar\tbaz' | reverse --split '\t'
raboof
zab
- [@stdlib/string-reverse][@stdlib/string-reverse]: reverse a string.
*
This package is part of [stdlib][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][stdlib], see the main project [repository][stdlib].
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---
See [LICENSE][stdlib-license].
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[npm-url]: https://npmjs.org/package/@stdlib/string-reverse-cli
[test-image]: https://github.com/stdlib-js/string-reverse/actions/workflows/test.yml/badge.svg?branch=v0.2.3
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[stdlib]: https://github.com/stdlib-js/stdlib
[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors
[cli-section]: https://github.com/stdlib-js/string-reverse#cli
[cli-url]: https://github.com/stdlib-js/string-reverse/tree/cli
[@stdlib/string-reverse]: https://www.npmjs.com/package/@stdlib/string-reverse
[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules
[deno-url]: https://github.com/stdlib-js/string-reverse/tree/deno
[deno-readme]: https://github.com/stdlib-js/string-reverse/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/string-reverse/tree/umd
[umd-readme]: https://github.com/stdlib-js/string-reverse/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/string-reverse/tree/esm
[esm-readme]: https://github.com/stdlib-js/string-reverse/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/string-reverse/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/string-reverse/main/LICENSE
[mdn-regexp]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions
[standard-streams]: https://en.wikipedia.org/wiki/Standard_streams