mimetypes: readonly [
"application/vnd.openxmlformats-officedocument.wordprocessingml.document",
"application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
"application/vnd.openxmlformats-officedocument.presentationml.presentation",
"application/pdf",
"application/zip",
"application/illustrator",
"application/postscript",
"application/vnd.ms-opentype",
"application/x-font-ttf",
"application/octet-stream",
"application/vnd.ms-excel",
"audio/mp3",
"audio/wav",
"audio/mpeg",
"font/ttf",
"font/otf",
"image/jpeg",
"image/jpg",
"image/png",
"image/gif",
"image/vnd.adobe.photoshop",
"image/svg+xml",
"text/plain",
"text/csv",
"video/mp4",
"video/webm",
] = ...