import { ResourceEvent } from './events';
import { ResourceEventDispatcher, ResourceEventEmitter } from './interfaces';
/**
 * A simple event dispatcher and emitter, used as the default events implementation.
 * The API is minimal and somewhat shared with the observables API for extensibility.
 */
export declare class SimpleEvents implements ResourceEventDispatcher, ResourceEventEmitter {
    private listeners;
    next(value: ResourceEvent): void;
    subscribe(next?: (value: ResourceEvent) => void): {
        unsubscribe(): void;
    };
    clear(): void;
}