import { oAddress } from '../../../router/o-address.js';
import { oNotificationEvent } from './o-notification-event.js';
/**
 * Emitted when a child node joins the hierarchy (registers with parent)
 */
export declare class ChildJoinedEvent extends oNotificationEvent {
    readonly childAddress: oAddress;
    readonly parentAddress: oAddress;
    constructor(config: {
        source: oAddress;
        childAddress: oAddress;
        parentAddress: oAddress;
    });
    protected getEventData(): Record<string, any>;
}
/**
 * Emitted when a child node leaves the hierarchy (unregisters or disconnects)
 */
export declare class ChildLeftEvent extends oNotificationEvent {
    readonly childAddress: oAddress;
    readonly parentAddress: oAddress;
    readonly reason?: string;
    constructor(config: {
        source: oAddress;
        childAddress: oAddress;
        parentAddress: oAddress;
        reason?: string;
    });
    protected getEventData(): Record<string, any>;
}
/**
 * Emitted when a parent connection is established
 */
export declare class ParentConnectedEvent extends oNotificationEvent {
    readonly parentAddress: oAddress;
    constructor(config: {
        source: oAddress;
        parentAddress: oAddress;
    });
    protected getEventData(): Record<string, any>;
}
/**
 * Emitted when a parent connection is lost
 */
export declare class ParentDisconnectedEvent extends oNotificationEvent {
    readonly parentAddress: oAddress;
    readonly reason?: string;
    constructor(config: {
        source: oAddress;
        parentAddress: oAddress;
        reason?: string;
    });
    protected getEventData(): Record<string, any>;
}
/**
 * Emitted when connection to leader is lost (CRITICAL)
 * This is a catastrophic failure - node cannot function without leader
 */
export declare class LeaderDisconnectedEvent extends oNotificationEvent {
    readonly leaderAddress: oAddress;
    readonly reason?: string;
    constructor(config: {
        source: oAddress;
        leaderAddress: oAddress;
        reason?: string;
    });
    protected getEventData(): Record<string, any>;
}
//# sourceMappingURL=hierarchy-events.d.ts.map