import { Activity, InvokeResponse } from '@microsoft/teams.api';
import { IActivityContext } from '../contexts';
import { IRoutes } from '../routes';
import { RouteHandler } from '../types';
import { Route, RouteType } from './route';
export declare class Router<TExtraCtx extends Record<string, any> = Record<string, any>> {
    protected readonly routes: Route<keyof IRoutes, TExtraCtx>[];
    /**
     * select routes that match the inbound activity
     * @param activity the inbound activity
     */
    select(activity: Activity): RouteHandler<import("../contexts").IBaseActivityContext<Activity, Record<string, any>>, any>[];
    /**
     * register a new route
     * @param route the route to register
     */
    register<Name extends keyof IRoutes>(route: Route<Name, TExtraCtx>): this;
    /**
     * register a middleware
     * @param callback the callback to invoke
     */
    use(callback: RouteHandler<IActivityContext<Activity, TExtraCtx>, void | InvokeResponse>, type?: RouteType): this;
    /**
     * register an activity route
     * @param event event to subscribe to
     * @param callback the callback to invoke
     */
    on<Name extends keyof IRoutes>(event: Name, callback: Exclude<IRoutes<TExtraCtx>[Name], undefined>, type?: RouteType): this;
}