# get-typeandmime

> Detect the File type of a Buffer/Uint8Array/ArrayBuffer

The file type is detected by checking the [magic number](https://en.wikipedia.org/wiki/Magic_number_(programming)#Magic_numbers_in_files) of the buffer.

This package is for detecting binary-based file formats, not text-based formats like `.txt`, `.csv`, `.svg`, etc.

## Install

```sh
npm i get-typeandmime
```

**This package is a ES5 module package.But can be used with both ES5 and ES6 as well**

## Usage

#### Node.js

Determine file type from a file:

```js
const {getFileType} = require("get-typeandmime")
const file = "../.path/file.extension"

console.log(getFileType(file));
```

Determine file type from a Buffer, which may be a portion of the beginning of a file:

This can also be used to read from a remote location:

```js
const {getStreamFileType} = require("get-typeandmime")

const remoteFile = "https://static.remove.bg/sample-gallery/graphics/bird-thumbnail.jpg";
(async()=>{
    console.log("Remote File Type:",await getStreamFileType(remoteFile));

})()
```

- `signs` - Buffer code of [supported file types](#supported-file-types)
- `mime` - The [MIME type](https://en.wikipedia.org/wiki/Internet_media_type)

Or `Unsupported file type` when there is no match.

#### buffer

Type: `Buffer | Uint8Array | ArrayBuffer`

A buffer representing file data. It works best if the buffer contains the entire file. It may work with a smaller portion as well.

#### filePath

file: `string`

The file path to parse.

## Contributions

*[Pull requests](.github/pull_request_template.md) are welcome for additional commonly used file types.*

## Maintainers

- [Pratap Shantanu](https://github.com/180896-cse)