npm package: @stdlib/string-to-well-formed
Description: Convert a string to a well formed string.
Author: The Stdlib Authors
Latest version: 0.1.2

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<details>
  <summary>
    About stdlib...
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</details>

# str2wellformed

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

> Create a new well-formed string.

<section class="installation">

## Installation

```bash
npm install @stdlib/string-to-well-formed
```

</section>

<section class="usage">

## Usage

```javascript
var str2wellformed = require( '@stdlib/string-to-well-formed' );
```

#### str2wellformed( str )

Creates a new well-formed string by replacing all lone surrogates with the replacement character `\uFFFD`.

<!-- eslint-disable no-new-wrappers -->

```javascript
var result = str2wellformed( '' );
// returns ''

result = str2wellformed( '\uDBFF' );
// returns '�'

result = str2wellformed( '\uDBFFFF\uDBFF' );
// returns '�FF�'

result = str2wellformed( '-5' );
// returns '-5'
```

</section>

<!-- /.usage -->

<section class="examples">

## Examples

<!-- eslint-disable no-new-wrappers -->

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

```javascript
var str2wellformed = require( '@stdlib/string-to-well-formed' );

var result = str2wellformed( '' );
// returns ''

result = str2wellformed( '\uDBFF' );
// returns '�'

result = str2wellformed( '\uDBFF\uDBFF' );
// returns '��'

result = str2wellformed( '5\uDBFF' );
// returns '5�'

result = str2wellformed( '-5' );
// returns '-5'
```

</section>

<!-- /.examples -->

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<section class="related">

</section>

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<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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[npm-image]: http://img.shields.io/npm/v/@stdlib/string-to-well-formed.svg
[npm-url]: https://npmjs.org/package/@stdlib/string-to-well-formed

[test-image]: https://github.com/stdlib-js/string-to-well-formed/actions/workflows/test.yml/badge.svg?branch=v0.1.2
[test-url]: https://github.com/stdlib-js/string-to-well-formed/actions/workflows/test.yml?query=branch:v0.1.2

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

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[stdlib]: https://github.com/stdlib-js/stdlib

[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors

[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-to-well-formed/tree/deno
[deno-readme]: https://github.com/stdlib-js/string-to-well-formed/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/string-to-well-formed/tree/umd
[umd-readme]: https://github.com/stdlib-js/string-to-well-formed/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/string-to-well-formed/tree/esm
[esm-readme]: https://github.com/stdlib-js/string-to-well-formed/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/string-to-well-formed/blob/main/branches.md

[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/string-to-well-formed/main/LICENSE

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</section>

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