import { Request } from "express";
export declare abstract class AbstractPermissionHandler {
    protected static instance: AbstractPermissionHandler;
    protected static registerPermissionsHandler(instance: AbstractPermissionHandler): AbstractPermissionHandler;
    protected static getPermissionsHandler(): AbstractPermissionHandler;
    abstract getPermissions(req: Request): string[];
    abstract hasPermissions(req: Request, permissionString: string): boolean;
}