import { Subscribable } from "./subscribable";
export type EventListener<T, E> = (data: T, entity: E) => any;
export type PreventableEventListener<T, E> = (data: T, prevent: () => void, entity: E) => any;
export interface IBaklavaEventEmitter {
    events: Record<string, BaklavaEvent<any, any> | PreventableBaklavaEvent<any, any>>;
}
/** Main event class for Baklava */
export declare class BaklavaEvent<T, E> extends Subscribable<EventListener<T, E>> {
    protected readonly entity: E;
    constructor(entity: E);
    /**
     * Invoke all listeners
     * @param data The data to invoke the listeners with.
     */
    emit(data: T): void;
}
/**
 * Extension for the {@link BaklavaEvent} class. A listener can return `false` to prevent
 * this event from happening.
 */
export declare class PreventableBaklavaEvent<T, E> extends Subscribable<PreventableEventListener<T, E>> {
    protected readonly entity: E;
    constructor(entity: E);
    /**
     * Invoke all listeners.
     * @param data The data to invoke all listeners with
     * @returns An object, where the `prevented` field is `true` when one of the listeners requested to prevent the event, otherwise `false`
     */
    emit(data: T): {
        prevented: boolean;
    };
}