macro_rules! mimes {
($($ident: ident = $value: literal),*$(,)?) => {
    pub enum MimeType {
        $($ident),*
    }

    impl MimeType {
        pub fn text(&self) -> &'static str {
            match self { $(Self::$ident => $value),* }
        }
    }
};
}

mimes! {
    Txt = "text/plain",
    Html = "text/html",
    Css = "text/css",
    Js = "text/javascript",
}