binary.ts

const commonBinaryMimeTypes = new Set([
  "application/octet-stream",
  // Docs
  "application/epub+zip",
  "application/msword",
  "application/pdf",
  "application/rtf",
  "application/vnd.amazon.ebook",
  "application/vnd.ms-excel",
  "application/vnd.ms-powerpoint",
  "application/vnd.openxmlformats-officedocument.presentationml.presentation",
  "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
  "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
  // Fonts
  "font/otf",
  "font/woff",
  "font/woff2",
  // Images
  "image/bmp",
  "image/gif",
  "image/jpeg",
  "image/png",
  "image/tiff",
  "image/vnd.microsoft.icon",
  "image/webp",
  // Audio
  "audio/3gpp",
  "audio/aac",
  "audio/basic",
  "audio/mpeg",
  "audio/ogg",
  "audio/wavaudio/webm",
  "audio/x-aiff",
  "audio/x-midi",
  "audio/x-wav",
  // Video
  "video/3gpp",
  "video/mp2t",
  "video/mpeg",
  "video/ogg",
  "video/quicktime",
  "video/webm",
  "video/x-msvideo",
  // Archives
  "application/java-archive",
  "application/vnd.apple.installer+xml",
  "application/x-7z-compressed",
  "application/x-apple-diskimage",
  "application/x-bzip",
  "application/x-bzip2",
  "application/x-gzip",
  "application/x-java-archive",
  "application/x-rar-compressed",
  "application/x-tar",
  "application/x-zip",
  "application/zip",
  // Serialized data
  "application/x-protobuf",
]);

export function isBinaryContentType(contentType?: string | null) {
  if (!contentType) return false;

  const value = contentType?.split(";")[0] ?? "";
  return commonBinaryMimeTypes.has(value);
}