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# archive-type [](https://travis-ci.org/kevva/archive-type)
> Detect the archive type of a Buffer/Uint8Array
## Install
```
$ npm install --save archive-type
```
## Usage
```js
const archiveType = require('archive-type');
const readChunk = require('read-chunk');
const buffer = readChunk.sync('unicorn.zip', 0, 262);
archiveType(buffer);
//=> {ext: 'zip', mime: 'application/zip'}
```
## API
### archiveType(input)
Returns an `Object` with:
- `ext` - One of the [supported file types](#supported-file-types)
- `mime` - The [MIME type](http://en.wikipedia.org/wiki/Internet_media_type)
Or `null` when no match.
#### input
Type: `Buffer` `Uint8Array`
It only needs the first 262 bytes.
## Supported file types
- `7z`
- `bz2`
- `gz`
- `rar`
- `tar`
- `zip`
- `xz`
- `gz`
## Related
- [archive-type-cli](https://github.com/kevva/archive-type-cli) - CLI for this module
## License
MIT © [Kevin Mårtensson](https://github.com/kevva)
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