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# [![xterm.js logo](logo-full.png)](https://xtermjs.org)

⚠ This package is experimental

`xterm-headless` is a headless terminal that can be run in node.js. This is useful in combination with the frontend [`xterm`](https://www.npmjs.com/package/xterm) for example to keep track of a terminal's state on a remote server where the process is hosted.

## Getting Started

First, you need to install the module, we ship exclusively through npm, so you need that installed and then add xterm.js as a dependency by running:

```sh
npm install xterm-headless
```

Then import as you would a regular node package. The recommended way to load `xterm-headless` is with TypeScript and the ES6 module syntax:

```javascript
import { Terminal } from '@xterm/headless';
```

## API

The full API for `xterm-headless` is contained within the [TypeScript declaration file](https://github.com/xtermjs/xterm.js/blob/master/typings/xterm-headless.d.ts), use the branch/tag picker in GitHub (`w`) to navigate to the correct version of the API.

Note that some APIs are marked *experimental*, these are added to enable experimentation with new ideas without committing to support it like a normal [semver](https://semver.org/) API. Note that these APIs can change radically between versions, so be sure to read release notes if you plan on using experimental APIs.

### Addons

Addons in `xterm-headless` work the [same as in `xterm`](https://github.com/xtermjs/xterm.js/blob/master/README.md#addons) with the one caveat being that the addon needs to be packaged for node.js and not use any DOM APIs.

Currently no official addons are packaged on npm.