import type { WebSocket } from 'ws';
export interface CostData {
    model: string;
    cost: number;
    inputTokens: number;
    outputTokens: number;
    totalTokens: number;
    cachedTokens?: number;
    imageCount?: number;
    timestamp: Date;
}
export declare class CostDemoLogger {
    private ws;
    private costHistory;
    private costByModel;
    private costCallback;
    private disconnected;
    constructor(ws?: WebSocket);
    setWS(ws: WebSocket | null): void;
    disconnect(): void;
    private setupCostTracking;
    private updateModelCosts;
    getCostHistory(): CostData[];
    getCostByModel(): Map<string, {
        totalCost: number;
        usageCount: number;
    }>;
    getTotalCost(): number;
    clearHistory(): void;
}
export declare const enableCostDemoLogger: (ws?: WebSocket) => {
    logger: CostDemoLogger;
    disconnect: () => void;
};
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