mime-kind

mime-kind

Detect the mime type of a Buffer, ReadStream, file path and file name.

Install

$ npm install mime-kind --save

Usage

const fs = require('fs');
const mime = require('mime-kind');

mime('c:/anonim.jpeg'); // -> { ext: 'jpeg', mime: 'image/jpeg' }
mime('.fakeext'); // -> null
mime(fs.createReadStream('./anonim.jpg')); // -> { ext: 'jpeg', mime: 'image/jpeg' }

API

mime(data, [defaultValue])

Returns an object (or null when no match) with:

• ext - file type
• mime - the MIME type

Params:

• data (Buffer|ReadStream|String) - Buffer, ReadStream, file path or file name.
• [defaultValue] (String|Object) - String or Object with value which will be returned if no match will be found. If defaultValue is incorrect returns null.

const mime = require('mime-kind');

mime('.fakeext', 'application/octet-stream'); // -> { ext: 'bin', mime: 'application/octet-stream' }
mime('.fakeext', { ext: 'mp4', mime: 'video/mp4' }); // -> { ext: 'mp4', mime: 'video/mp4' }
mime('.fakeext', 'ogg'); // -> { ext: 'ogg', mime: 'audio/ogg' }
// but
mime('.fakeext', 'ogg3'); // -> null
mime('.fakeext', { ext: 'fake', mime: 'fake/fake' }); // -> { ext: 'fake', mime: 'fake/fake' }

License

The MIT License (MIT)
Copyright (c) 2015-2017 Alexey Bystrov