import type { ChatWidgetConfig, VTiltConfig } from "../types";
/** Deep-merge a partial `chat` patch into the stored VTilt config. */
export declare function mergeChatWidgetConfig(current: ChatWidgetConfig | undefined, patch: ChatWidgetConfig): ChatWidgetConfig;
/**
 * Apply a partial VTilt config patch with deep merge for nested `chat`
 * (so `updateConfig({ chat: { bubble: { offset } } })` does not wipe other
 * chat keys from init).
 */
export declare function mergeVtiltConfigPatch(current: VTiltConfig, patch: Partial<VTiltConfig>): Partial<VTiltConfig>;