interface AssetServerOptions {
  route: string;
  assetUploadDir: string;
  assetUrlPrefix?: string | ((ctx: RequestContext, identifier: string) => string);
  previewMaxWidth?: number;
  previewMaxHeight?: number;
  presets?: ImageTransformPreset[];
  namingStrategy?: AssetNamingStrategy;
  previewStrategy?: AssetPreviewStrategy;
  storageStrategyFactory?: (
        options: AssetServerOptions,
    ) => AssetStorageStrategy | Promise<AssetStorageStrategy>;
  cacheHeader?: CacheConfig | string;
}