interface UploadImageToPrivateSupabaseArgs {
    cacheControl?: string;
    blob: string;
    contentType: string;
    fileRef: string;
    supabase: any;
    upsert: boolean;
}
interface PrivateReturn {
    fullPath: string;
    id: string;
    path: string;
}
/**
 * Uploads a base64 image to the private Supabase storage bucket.
 * @param params.blob - Base64 image string.
 * @param params.cacheControl - Cache control header value.
 * @param params.contentType - MIME type of the image.
 * @param params.fileRef - File reference/path in storage.
 * @param params.supabase - Supabase client instance.
 * @param params.upsert - Whether to overwrite existing file.
 * @returns The upload result data or error.
 */
declare const uploadImageToPrivateSupabase: ({ blob, cacheControl, contentType, fileRef, supabase, upsert, }: UploadImageToPrivateSupabaseArgs) => Promise<PrivateReturn>;

export { type PrivateReturn, type UploadImageToPrivateSupabaseArgs, uploadImageToPrivateSupabase };