/****
 * HMR Script Generator
 * Generates client-side JavaScript for Hot Module Replacement (HMR)
 *
 * Single unified script for both local dev and preview modes.
 * Connects to /_ws WebSocket with exponential backoff reconnection,
 * keepalive pings, debounced updates, and CSS hot-swap.
 */
/**
 * HMR script for local development.
 * Routine lifecycle messages are available when VERYFRONT_DEBUG_HMR=1.
 */
export declare function getHMRScript(_port: number): string;
/**
 * HMR script for preview mode.
 * Routine lifecycle messages are available when VERYFRONT_DEBUG_HMR=1.
 */
export declare function getPreviewHMRScript(): string;
//# sourceMappingURL=hmr-scripts.d.ts.map