import { BaseProxy } from './BaseProxy.js';
import { ProxyUpstream } from './types.js';
/**
 * Proxy with dynamically configurable routing based on hostnames.
 *
 * Routes are matched against the destination hostname. First match wins.
 * Routes can optionally be labelled and removed by label.
 */
export declare class RoutingProxy extends BaseProxy {
    protected routes: ProxyRoute[];
    getRoutes(): ProxyRoute[];
    matchRoute(host: string): ProxyUpstream | null;
    /**
     * Clears routing table. All requests will be routed directly.
     */
    clearRoutes(): void;
    /**
     * Inserts a new route. Requests matching `hostPattern` are routed to `upstream`.
     * Inserted at the beginning by default; first match wins.
     */
    insertRoute(route: ProxyInsertRouteSpec, index?: number): void;
    /**
     * Removes routes matching the specified label.
     */
    removeRoutes(label: string): void;
}
export interface ProxyRoute {
    label: string;
    hostPattern: string;
    upstream: ProxyUpstream | null;
}
export interface ProxyInsertRouteSpec {
    label?: string;
    hostPattern: string;
    upstream: ProxyUpstream | null;
}