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https://github.com/wooorm/collapse-white-space

Collapse white space.
https://github.com/wooorm/collapse-white-space

collapse space white white-space

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Collapse white space.

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# collapse-white-space

[![Build][build-badge]][build]
[![Coverage][coverage-badge]][coverage]
[![Downloads][downloads-badge]][downloads]
[![Size][size-badge]][size]

Collapse white space.

## Contents

* [What is this?](#what-is-this)
* [When should I use this?](#when-should-i-use-this)
* [Install](#install)
* [Use](#use)
* [API](#api)
* [`collapseWhiteSpace(value[, options|style])`](#collapsewhitespacevalue-optionsstyle)
* [Types](#types)
* [Compatibility](#compatibility)
* [Security](#security)
* [Related](#related)
* [Contribute](#contribute)
* [License](#license)

## What is this?

This is a small package that collapses multiple white space characters into one.

## When should I use this?

You can use this package if you want to HTML or JavaScript (default) white space
to a single character.
You can optionally drop initial and final white space.
By default it collapses to a single space, but optionally line endings can be
preserved.

## Install

This package is [ESM only][esm].
In Node.js (version 14.14+, 16.0+), install with [npm][]:

```sh
npm install collapse-white-space
```

In Deno with [`esm.sh`][esmsh]:

```js
import {collapseWhiteSpace} from 'https://esm.sh/collapse-white-space@2'
```

In browsers with [`esm.sh`][esmsh]:

```html

import {collapseWhiteSpace} from 'https://esm.sh/collapse-white-space@2?bundle'

```

## Use

```js
import {collapseWhiteSpace} from 'collapse-white-space'

collapseWhiteSpace('\tfoo \n\tbar \t\r\nbaz') //=> ' foo bar baz'
```

## API

This package exports the identifier `collapseWhiteSpace`.
There is no default export.

### `collapseWhiteSpace(value[, options|style])`

Collapse white space in `value` (`string`).

##### `style`

Treated as `options.style` (`'html'` or `'js'`, default: `'js'`).

##### `options`

Configuration (optional).

###### `options.style`

Style of white space to support (`'html'` or `'js'`, default: `'js'`).
JavaScript white space matches the pattern `\s`.
HTML white space matches `[\t\n\v\f\r ]`.

###### `options.preserveLineEndings`

Whether to collapse white space containing a line ending to that line ending
(`boolean`, default: `false`).
The default is to collapse to a single space.
Line endings matches the pattern `\r?\n|\r`.

###### `options.trim`

Whether to drop white space at the start and end of `value` (`boolean`, default:
`false`).
The default is to keep it.

###### Returns

Value with collapsed white space (`string`).

## Types

This package is fully typed with [TypeScript][].
It exports the additional types `Options` and `Style`.

## Compatibility

This package is at least compatible with all maintained versions of Node.js.
As of now, that is Node.js 14.14+ and 16.0+.
It also works in Deno and modern browsers.

## Security

This package is safe.

## Related

* [`wooorm/is-whitespace-character`](https://github.com/wooorm/is-whitespace-character)
— check if a character is a white space character
* [`wooorm/detab`](https://github.com/wooorm/detab)
— convert tabs to spaces
* [`wooorm/trim-lines`](https://github.com/wooorm/trim-lines)
— remove tabs and spaces around line-breaks

## Contribute

Yes please!
See [How to Contribute to Open Source][contribute].

## License

[MIT][license] © [Titus Wormer][author]

[build-badge]: https://github.com/wooorm/collapse-white-space/workflows/main/badge.svg

[build]: https://github.com/wooorm/collapse-white-space/actions

[coverage-badge]: https://img.shields.io/codecov/c/github/wooorm/collapse-white-space.svg

[coverage]: https://codecov.io/github/wooorm/collapse-white-space

[downloads-badge]: https://img.shields.io/npm/dm/collapse-white-space.svg

[downloads]: https://www.npmjs.com/package/collapse-white-space

[size-badge]: https://img.shields.io/bundlephobia/minzip/collapse-white-space.svg

[size]: https://bundlephobia.com/result?p=collapse-white-space

[npm]: https://docs.npmjs.com/cli/install

[esmsh]: https://esm.sh

[license]: license

[author]: https://wooorm.com

[esm]: https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c

[typescript]: https://www.typescriptlang.org

[contribute]: https://opensource.guide/how-to-contribute/