/**
 * Event Buffer — batches events for telemetry logging AND keeps a
 * persistent per-session history for decision-time feature computation.
 *
 * These are deliberately two separate arrays. `events` is a send-queue:
 * `flush()` drains it every 5s / 100 events / page unload and ships it to
 * /api/telemetry (fire-and-forget logging). `history` is never drained by
 * flush — it accumulates every event for the life of the session, because
 * getDecision()/getToken() need the FULL interaction history to score
 * accurately, not just whatever arrived in the last few seconds. Reusing
 * one array for both jobs meant a real user who took more than ~5s to fill
 * a form had most of their genuine activity wiped out from under the score
 * right before it was computed — it saw only the last sliver of activity
 * and misread a real user as a near-zero-activity bot pattern.
 */
import type { TelemetryEvent } from '../types.js';
export declare function initBuffer(options?: {
    debug?: boolean;
    disableTelemetry?: boolean;
}): void;
export declare function push(event: TelemetryEvent): void;
export declare function flush(): void;
export declare function stopBuffer(): void;
export declare function getBufferSize(): number;
export declare function getEvents(): TelemetryEvent[];
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