import { URLPattern } from "urlpattern-polyfill";
import { Event } from "../event-target";
import { NavigateEvent } from "../spec/navigation";
import { Router } from "./router";
type NonNil<T> = T extends null | undefined ? never : T;
export type URLPatternResult = NonNil<ReturnType<URLPattern["exec"]>>;
export type RouteFnReturn<R = void | unknown> = Promise<R> | R;
export interface Fn {
    (...args: unknown[]): RouteFnReturn;
}
export interface RouteFn<E extends Event = NavigateEvent, R = void | unknown> {
    (event: E, match?: URLPatternResult): RouteFnReturn<R>;
}
export interface ErrorFn<E extends Event = NavigateEvent> {
    (error: unknown, event: E, match?: URLPatternResult): RouteFnReturn;
}
export interface PatternErrorFn<E extends Event = NavigateEvent> {
    (error: unknown, event: E, match: URLPatternResult): RouteFnReturn;
}
export interface ThenFn<E extends Event = NavigateEvent, R = void | unknown> {
    (value: R, event: E, match?: URLPatternResult): RouteFnReturn;
}
export interface PatternThenFn<E extends Event = NavigateEvent, R = void | unknown> {
    (value: R, event: E, match: URLPatternResult): RouteFnReturn;
}
export interface PatternRouteFn<E extends Event = NavigateEvent, R = void | unknown> {
    (event: E, match: URLPatternResult): RouteFnReturn<R>;
}
export interface Route<E extends Event = Event, R = unknown> {
    string?: string;
    pattern?: URLPattern;
    fn?: Fn;
    router?: Router<E, R>;
}
export type RouteType = "route" | "reject" | "resolve";
export interface RouteRecord<E extends Event, R> extends Record<RouteType, Route<E, R>[]> {
    router: Route<E, R>[];
}
export interface RouterListeningFn<E extends Event> {
    (event: E): RouteFnReturn;
}
export interface RouterListenFn<E extends Event = NavigateEvent> {
    (fn: RouterListeningFn<E>): void;
}
export interface EventListenerTarget<E extends Event> {
    addEventListener(type: E["type"], handler: RouterListeningFn<E>): void;
    removeEventListener(type: E["type"], handler: RouterListeningFn<E>): void;
}
export type RouterListenTarget<E extends Event> = RouterListenFn<E> | EventListenerTarget<E>;
export {};