import { LRUCache } from "lru-cache";
import type { IncomingMessage, OutgoingMessage } from "@ref/coap";
declare module "@ref/coap" {
    interface IncomingMessage {
        params: Record<string, any>;
        query: Record<string, any>;
    }
}
export interface IncomingMessageWithParams<P> extends IncomingMessage {
    params: Readonly<P>;
}
export type RouteMethods = "all" | "get" | "post" | "put" | "delete" | "observe";
export type RouteCallback<P = any> = (req: IncomingMessageWithParams<P>, res: OutgoingMessage) => void;
interface Router {
    (req: IncomingMessage, res: OutgoingMessage): void;
    cache: LRUCache<string, CachedHandler, unknown>;
    method<P = any>(method: RouteMethods, path: string, callback: RouteCallback<P>): Router;
    all<P = any>(path: string, callback: RouteCallback<P>): Router;
    get<P = any>(path: string, callback: RouteCallback<P>): Router;
    post<P = any>(path: string, callback: RouteCallback<P>): Router;
    put<P = any>(path: string, callback: RouteCallback<P>): Router;
    delete<P = any>(path: string, callback: RouteCallback<P>): Router;
    observe<P = any>(path: string, callback: RouteCallback<P>): Router;
}
interface CachedHandler {
    params: Record<string, any>;
    callback: RouteCallback;
}
export declare function createRouter(cacheOptions?: LRUCache.Options<string, CachedHandler, unknown>): Router;
export {};