import { Event } from "./event";
import { EventCallback, SyncEventCallback } from "./callback";
import { EventDescriptor } from "./descriptor";
import { EventTargetAddListenerOptions, EventTargetListeners as EventTargetListenersSymbol, EventTargetListenersIgnore, EventTargetListenersMatch } from "./event-target-options";
export interface ExternalSyncEventTargetListeners<Event = unknown> {
    addEventListener(type: string, callback: SyncEventCallback<Event>, options?: EventTargetAddListenerOptions): void;
    removeEventListener(type: string, callback: SyncEventCallback<Event>, options?: unknown): void;
}
export interface EventTargetListeners extends ExternalSyncEventTargetListeners<Event> {
    addEventListener(type: string | symbol, callback: EventCallback, options?: EventTargetAddListenerOptions): void;
    addEventListener(type: string | symbol, callback: Function, options?: EventTargetAddListenerOptions): void;
    removeEventListener(type: string | symbol, callback: Function, options?: unknown): void;
    hasEventListener(type: string | symbol, callback?: Function): boolean;
}
declare const EventTargetDescriptors: unique symbol;
export declare class EventTargetListeners implements EventTargetListeners {
    [key: string]: unknown;
    [EventTargetDescriptors]?: EventDescriptor[];
    [EventTargetListenersIgnore]?: WeakSet<EventDescriptor>;
    get [EventTargetListenersSymbol](): EventDescriptor[] | undefined;
    [EventTargetListenersMatch]?(type: string | symbol): EventDescriptor[];
    addEventListener(type: string | symbol, callback: EventCallback, options?: EventTargetAddListenerOptions): void;
    addEventListener(type: string | symbol, callback: Function, options?: EventTargetAddListenerOptions): void;
    removeEventListener(type: string | symbol, callback: Function, options?: unknown): void;
    hasEventListener(type: string | symbol, callback?: Function): boolean;
}
export declare function isSignalHandled(event: Event, error: unknown): boolean;
export {};