/**
 * @rajeev02/app-shell — Analytics Pipeline
 * Event tracking, user properties, funnel analysis, offline buffer
 */
export interface AnalyticsEvent {
    name: string;
    properties?: Record<string, unknown>;
    timestamp: number;
    sessionId: string;
}
export interface AnalyticsConfig {
    /** Flush events to server handler */
    onFlush: (events: AnalyticsEvent[]) => Promise<void>;
    /** Flush interval in ms (default: 30000) */
    flushIntervalMs?: number;
    /** Max batch size (default: 50) */
    maxBatchSize?: number;
    /** Whether to track automatically (screen views, etc.) */
    autoTrack?: boolean;
}
export declare class AnalyticsEngine {
    private config;
    private buffer;
    private userProperties;
    private sessionId;
    private flushTimer;
    constructor(config: AnalyticsConfig);
    /** Track an event */
    track(name: string, properties?: Record<string, unknown>): void;
    /** Set user properties (included in all future events) */
    setUserProperties(props: Record<string, unknown>): void;
    /** Track screen view */
    trackScreen(screenName: string, properties?: Record<string, unknown>): void;
    /** Flush events to server */
    flush(): Promise<void>;
    /** Get buffer size */
    getBufferSize(): number;
    /** Destroy — flush and stop timer */
    destroy(): Promise<void>;
    private startFlushTimer;
}
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