Convert a string to snake case.
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> Convert a string to snake case.
To use as a general utility, install the CLI package globally
``bash`
npm install -g @stdlib/string-snakecase-cli
`text
Usage: snakecase [options] [
Options:
-h, --help Print this message.
-V, --version Print the package version.
--split sep Delimiter for stdin data. Default: '/\\r?\\n/'.
`
`bash`
$ snakecase 'hello world!'
hello_world
To use as a [standard stream][standard-streams],
`bash`
$ echo -n 'beEp booP' | snakecase
beep_boop
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 'beEp booP\tfooBar' | snakecase --split '\t'
beep_boop
foo_bar
- [@stdlib/string-snakecase][@stdlib/string-snakecase]: convert a string to snake case.
- [@stdlib/string-camelcase][@stdlib/string/camelcase]: convert a string to camel case.
- [@stdlib/string-constantcase][@stdlib/string/constantcase]: convert a string to constant case.
- [@stdlib/string-kebabcase][@stdlib/string/kebabcase]: convert a string to kebab case.
- [@stdlib/string-pascalcase][@stdlib/string/pascalcase]: convert a string to Pascal case.
*
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-snakecase-cli
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[test-url]: https://github.com/stdlib-js/string-snakecase/actions/workflows/test.yml?query=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-snakecase#cli
[cli-url]: https://github.com/stdlib-js/string-snakecase/tree/cli
[@stdlib/string-snakecase]: https://www.npmjs.com/package/@stdlib/string-snakecase
[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-snakecase/tree/deno
[deno-readme]: https://github.com/stdlib-js/string-snakecase/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/string-snakecase/tree/umd
[umd-readme]: https://github.com/stdlib-js/string-snakecase/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/string-snakecase/tree/esm
[esm-readme]: https://github.com/stdlib-js/string-snakecase/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/string-snakecase/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/string-snakecase/main/LICENSE
[standard-streams]: https://en.wikipedia.org/wiki/Standard_streams
[mdn-regexp]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions
[@stdlib/string/camelcase]: https://www.npmjs.com/package/@stdlib/string-camelcase
[@stdlib/string/constantcase]: https://www.npmjs.com/package/@stdlib/string-constantcase
[@stdlib/string/kebabcase]: https://www.npmjs.com/package/@stdlib/string-kebabcase
[@stdlib/string/pascalcase]: https://www.npmjs.com/package/@stdlib/string-pascalcase