import { ConnectionState, ConnectionGap, ConnectionMetadata, ReconnectionConfig, ContextHealth } from "./types.js";
export declare const DEFAULT_RECONNECTION_CONFIG: ReconnectionConfig;
export declare const MIN_STABLE_CONNECTION_MS = 5000;
export declare function initConnectionState(appKey: string): ConnectionState;
export declare function updateConnectionState(appKey: string, updates: Partial<ConnectionState>): void;
export declare function getConnectionState(appKey: string): ConnectionState | null;
export declare function getAllConnectionStates(): Map<string, ConnectionState>;
export declare function recordConnectionGap(appKey: string, reason: string): void;
export declare function closeConnectionGap(appKey: string): void;
export declare function getRecentGaps(maxAgeMs: number): ConnectionGap[];
export declare function hasRecentDisconnect(appKey: string, withinMs: number): boolean;
export declare function saveConnectionMetadata(appKey: string, metadata: ConnectionMetadata): void;
export declare function getConnectionMetadata(appKey: string): ConnectionMetadata | null;
export declare function clearConnectionMetadata(appKey: string): void;
export declare function getAllConnectionMetadata(): Map<string, ConnectionMetadata>;
export declare function saveReconnectionTimer(appKey: string, timer: NodeJS.Timeout): void;
export declare function getAndClearReconnectionTimer(appKey: string): NodeJS.Timeout | null;
export declare function shouldTerminateForMissedPong(args: {
    pongReceived: boolean;
    lastCdpMessageAt: Date | null;
    now: number;
    quietWindowMs: number;
}): boolean;
export declare function pendingReconnectionKeys(): string[];
export declare function cancelReconnectionTimer(appKey: string): void;
export declare function cancelAllReconnectionTimers(): void;
export declare function clearAllConnectionState(): void;
export declare function calculateBackoffDelay(attempt: number, config?: ReconnectionConfig): number;
export declare function formatDuration(ms: number): string;
export declare function initContextHealth(appKey: string): ContextHealth;
export declare function getContextHealth(appKey: string): ContextHealth | null;
export declare function updateContextHealth(appKey: string, updates: Partial<ContextHealth>): void;
export declare function markContextStale(appKey: string): void;
export declare function markContextHealthy(appKey: string, contextId: number): void;
export declare function clearContextHealth(appKey: string): void;
export declare function getAllContextHealth(): Map<string, ContextHealth>;
export type ConnectionEventType = "connect-start" | "connect-success" | "connect-rejected" | "stale-target" | "liveness-failed" | "closed" | "reconnect-scheduled" | "reconnect-attempt" | "reconnect-success" | "reconnect-failed" | "max-attempts-reached" | "reconnect-suppressed" | "metro-down";
export interface ConnectionEvent {
    timestamp: Date;
    appKey: string;
    deviceTitle?: string;
    type: ConnectionEventType;
    detail?: string;
}
export declare function recordConnectionEvent(type: ConnectionEventType, appKey: string, deviceTitle?: string, detail?: string): void;
export declare function getConnectionEvents(filter?: {
    appKey?: string;
    last?: number;
}): ConnectionEvent[];
export declare function clearConnectionEvents(): number;
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