import type { BaseMessage } from "@langchain/core/messages";
import type { ZodType } from "zod";
export interface StructuredRunnable<T> {
    invoke(input: unknown): Promise<T>;
}
export interface ChatLike {
    invoke(input: unknown): Promise<BaseMessage>;
    withStructuredOutput<T extends Record<string, unknown>>(schema: ZodType<T>): StructuredRunnable<T>;
}
export type ChatFactory = (model: string, temperature?: number) => ChatLike;
export declare const anthropicChat: ChatFactory;
export declare function messageText(msg: BaseMessage): string;