Function mimeType

Returns
    | "video/mp4"
    | "video/mpeg"
    | "video/webm"
    | "video/3gpp"
    | "video/x-matroska"
    | "video/x-msvideo"
    | "video/quicktime"
    | "video/x-ms-wmv"
    | "video/x-flv"
    | "video/x-m4v"
    | "audio/mpeg"
    | "audio/mp4"
    | "audio/wav"
    | "audio/ogg"
    | "audio/aac"
    | "audio/flac"
    | "audio/alac"
    | "image/jpeg"
    | "image/png"
    | "image/gif"
    | "image/bmp"
    | "image/webp"
    | "image/svg+xml"
    | "image/x-icon"
    | "image/tiff"
    | "image/vnd.adobe.photoshop"
    | "application/postscript"
    | "application/x-indesign"
    | "image/x-raw"
    | "image/x-canon-cr2"
    | "image/x-nikon-nef"
    | "image/x-olympus-orf"
    | "image/x-panasonic-rw2"
    | "image/x-pentax-pef"
    | "image/x-sony-arw"
    | "image/x-adobe-dng"
    | "image/x-sigma-x3f"
    | "image/x-canon-cr3"
    | "image/heic"
    | "image/heif"
    | "image/avif"
    | "application/pdf"
    | "text/plain"
    | "text/html"
    | "text/css"
    | "application/javascript"
    | "application/json"
    | "application/xml"
    | "application/zip"
    | "application/x-rar-compressed"
    | "application/x-7z-compressed"
    | "application/octet-stream"