DEMO

Hereby we check file structure header to determine file type. It's more reliable than the way which maps mime type by extension name.

Inspired by magic file. File signatures is from garykessler

$ bin/index.js --file path/to/the/file

import determine from './lib/determine'
let {mime} = determine([0x78, 0x01, 0x73, 0x0D, 0x62, 0x62, 0x60, ...])

Specific usage: Node Web

• Fill up magic data
• Unit tests