import type { TelemetryEvent } from "./events.ts";
export declare const TELEMETRY_SHARD_MAX_BYTES: number;
export declare const TELEMETRY_RETENTION_DAYS = 30;
export declare function resolveTelemetryDir(env?: NodeJS.ProcessEnv): string;
export declare function appendTelemetryEvent(dir: string, event: TelemetryEvent, options?: {
    maxShardBytes?: number;
    retentionDays?: number;
    now?: number;
}): Promise<void>;
export declare function pruneTelemetryShards(dir: string, retentionDays: number, now?: number): Promise<number>;
export declare function readTelemetryEvents(dir: string, windowDays: number, now?: number): Promise<TelemetryEvent[]>;