whatwg-mimetype conforms to the WHATWG MIME type parsing and serialization standard. Use it for robust and accurate handling of MIME types in JavaScript. It simplifies working with complex MIME type strings, ensuring consistency with web standards. This package is ideal for validating user-provided MIME types, manipulating MIME type parameters, and constructing valid Content-Type headers. It handles edge cases and provides a reliable foundation for any application dealing with internet media types.