import type { ReactElement } from "react";
import type { PossibleMeta } from "../util/meta.js";
import type { Routes } from "./Routes.js";
export interface RouterProps extends PossibleMeta {
    /** List of routes for the router to match against. */
    readonly routes: Routes;
    /**
     * Optional fallback element.
     * - Explicit `null` means fallback to nothing (router will not throw `NotFoundError`).
     */
    readonly fallback?: ReactElement | undefined | null;
}
/**
 * Match the current URL against `routes` and render the matched element.
 * - Reads `url` and `base` from the surrounding `<Meta>` context (override via props).
 * - When `base` is set, the effective path is the URL after stripping the base prefix.
 * - Nest by putting another `<Router>` inside a route's value; pass `base="/section"` (or wrap in `<Meta>`) to scope.
 * - Route `{placeholders}` are passed as props to function/component route values along with merged URL `?query` params. They are not published into context — descendants of a `ReactElement`-valued route can't see them automatically.
 * - Returns `null` when there's no URL in context or the URL is outside the base.
 *
 * @throws {NotFoundError} if no route matches and `fallback` is `undefined`
 */
export declare function Router({ routes, fallback, ...meta }: RouterProps): ReactElement | null;