/**
 * OpenKernel — Auto Mesh Update
 *
 * Version gossip across the mesh. Each node announces its version on connect and
 * heartbeat; when a node hears of a newer version from a trusted peer it can
 * (optionally) self-update via the configured channel. Off by default — updating
 * is opt-in per node, and only accepted from a hub/relay, never from a satellite.
 */
import type { Logger } from '../types.js';
import type { NodeRole, UpdateAnnounce } from './types.js';
/** Compare two dotted versions. Returns >0 if a>b, <0 if a<b, 0 if equal. */
export declare function compareVersions(a: string, b: string): number;
export interface AutoUpdateOptions {
    version: string;
    channel?: UpdateAnnounce['channel'];
    ref?: string;
    logger: Logger;
    /** When true, act on a newer announce; otherwise just log availability. */
    enabled?: boolean;
    /** Perform the actual update (npm i -g, git pull, download). Caller-supplied
     *  so the kernel never shells out unexpectedly. */
    applyUpdate?: (announce: UpdateAnnounce) => Promise<void>;
}
export declare class AutoUpdate {
    private opts;
    private latestSeen;
    constructor(opts: AutoUpdateOptions);
    /** This node's announcement. */
    announce(): UpdateAnnounce;
    /**
     * Process a peer's announce. Returns true if an update was (or would be)
     * triggered. Only honours announcements from hub/relay roles.
     */
    onAnnounce(announce: UpdateAnnounce, fromRole: NodeRole): Promise<boolean>;
    currentVersion(): string;
}