import type { ServerWebSocket } from 'bun';
export declare function createHmrHandler(): HmrWebSocketHandler;
/**
 * Broadcast a message to all connected clients
 */
export declare function broadcast(message: HmrMessage): void;
/**
 * Notify clients of a story update
 */
export declare function notifyStoryUpdate(storyId: string, data?: any): void;
/**
 * Notify clients of a new story
 */
export declare function notifyStoryAdd(storyId: string, data?: any): void;
/**
 * Notify clients of a removed story
 */
export declare function notifyStoryRemove(storyId: string): void;
/**
 * Notify clients of a config change
 */
export declare function notifyConfigChange(): void;
/**
 * Notify clients to do a full reload
 */
export declare function notifyFullReload(): void;
/**
 * Notify clients of an error
 */
export declare function notifyError(error: string): void;
/**
 * Get the number of connected clients
 */
export declare function getClientCount(): number;
/**
 * Get HMR client script to inject into the page
 */
export declare function getHmrClientScript(wsUrl: string): string;
/**
 * HMR message structure
 */
export declare interface HmrMessage {
  type: HmrMessageType
  data?: any
  timestamp?: number
}
/**
 * Create WebSocket upgrade handler for HMR
 */
export declare interface HmrWebSocketHandler {
  open: (ws: ServerWebSocket<unknown>) => void
  close: (ws: ServerWebSocket<unknown>) => void
  message: (ws: ServerWebSocket<unknown>, message: string | ArrayBuffer) => void
}
/**
 * HMR message types
 */
export type HmrMessageType = | 'connected'
  | 'story-update'
  | 'story-add'
  | 'story-remove'
  | 'config-change'
  | 'full-reload'
  | 'error';
