Mime

Content-type detection for assets and downloads: map a filename to its MIME type, or refine the guess by peeking at a file's leading bytes. Useful for deciding how to load a dropped-in mod file, labelling an export, or picking a decoder. of is a pure lookup by extension; sniff reads the first bytes and recognises a few well-known signatures (PNG, JPEG, GIF, PDF), falling back to the extension when nothing matches. The extension table is deliberately compact and documented; richer magic-byte coverage is a follow-up.