npm package: @stdlib/assert-is-blank-string
Description: Test if a value is a blank string.
Author: The Stdlib Authors
Latest version: 0.2.3

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<details>
  <summary>
    About stdlib...
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  <p>We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.</p>
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# isBlankString

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] -->

> Test if a value is a blank string.

<section class="installation">

## Installation

```bash
npm install @stdlib/assert-is-blank-string
```

</section>

<section class="usage">

## Usage

```javascript
var isBlankString = require( '@stdlib/assert-is-blank-string' );
```

#### isBlankString( value )

Tests if a `value` is a blank `string` (i.e., an empty string or a string consisting only of whitespace characters).

```javascript
var bool = isBlankString( '   ' );
// returns true

bool = isBlankString( '' );
// returns true

bool = isBlankString( 0 );
// returns false
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var isBlankString = require( '@stdlib/assert-is-blank-string' );

var out = isBlankString( '   ' );
// returns true

out = isBlankString( '\t\t\t' );
// returns true

out = isBlankString( '\r\n' );
// returns true

out = isBlankString( '' );
// returns true

out = isBlankString( 'beep boop' );
// returns false

out = isBlankString( null );
// returns false
```

</section>

<!-- /.examples -->



<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->

<section class="related">

## See Also

-   <span class="package-name">[`@stdlib/assert-is-blank-string-cli`][@stdlib/assert-is-blank-string-cli]</span><span class="delimiter">: </span><span class="description">CLI package for use as a command-line utility.</span>
-   <span class="package-name">[`@stdlib/assert-is-string`][@stdlib/assert/is-string]</span><span class="delimiter">: </span><span class="description">test if a value is a string.</span>
-   <span class="package-name">[`@stdlib/assert-is-empty-string`][@stdlib/assert/is-empty-string]</span><span class="delimiter">: </span><span class="description">test if a value is an empty string.</span>

</section>

<!-- /.related -->

<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->


<section class="main-repo" >

* * *

## Notice

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].

#### Community

[![Chat][chat-image]][chat-url]

---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

</section>

<!-- /.stdlib -->

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<section class="links">

[@stdlib/assert-is-blank-string-cli]: https://www.npmjs.com/package/@stdlib/assert-is-blank-string-cli

[npm-image]: http://img.shields.io/npm/v/@stdlib/assert-is-blank-string.svg
[npm-url]: https://npmjs.org/package/@stdlib/assert-is-blank-string

[test-image]: https://github.com/stdlib-js/assert-is-blank-string/actions/workflows/test.yml/badge.svg?branch=v0.2.3
[test-url]: https://github.com/stdlib-js/assert-is-blank-string/actions/workflows/test.yml?query=branch:v0.2.3

[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/assert-is-blank-string/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/assert-is-blank-string?branch=main

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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/assert-is-blank-string#cli
[cli-url]: https://github.com/stdlib-js/assert-is-blank-string/tree/cli
[@stdlib/assert-is-blank-string]: https://github.com/stdlib-js/assert-is-blank-string/tree/main

[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/assert-is-blank-string/tree/deno
[deno-readme]: https://github.com/stdlib-js/assert-is-blank-string/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/assert-is-blank-string/tree/umd
[umd-readme]: https://github.com/stdlib-js/assert-is-blank-string/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/assert-is-blank-string/tree/esm
[esm-readme]: https://github.com/stdlib-js/assert-is-blank-string/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/assert-is-blank-string/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/assert-is-blank-string/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

<!-- <related-links> -->

[@stdlib/assert/is-string]: https://www.npmjs.com/package/@stdlib/assert-is-string

[@stdlib/assert/is-empty-string]: https://www.npmjs.com/package/@stdlib/assert-is-empty-string

<!-- </related-links> -->

</section>

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