/**
 * Dynamic greeting resolution (TalkerConfig.greetingFn).
 *
 * Lets the host compute a greeting per caller and channel - by name, persona,
 * mood - without an LLM round-trip. Null/undefined or a thrown error falls
 * back to the phrase-file greeting at the call site.
 */
import type { Channel, TalkerConfig } from "../types";
export declare function resolveGreeting(config: TalkerConfig, phoneNumber: string, channel: Channel): Promise<string | null>;