import { TimeWheelEvent, TimeWheelEventData } from '../types';
import { BaseObserver } from './BaseObserver';
export declare class StatisticsObserver extends BaseObserver {
    private eventCounts;
    private taskDurations;
    private lastTaskStartTime;
    constructor();
    protected handleEvent(data: TimeWheelEventData): void;
    getEventCount(event: TimeWheelEvent): number;
    getAllEventCounts(): Map<TimeWheelEvent, number>;
    getAverageTaskDuration(): number;
    getMaxTaskDuration(): number;
    getMinTaskDuration(): number;
    reset(): void;
    getReport(): object;
}
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