import { type ChatValidationResult } from "./chat-storage-errors.js";
import type { ChatMessage, ChatScope, ChatThread } from "./types/chat.js";
export declare const CHAT_SCHEMA_VERSION = 1;
export declare function validateChatThread(thread: ChatThread): ChatValidationResult<ChatThread>;
export declare function validateChatMessage(message: ChatMessage): ChatValidationResult<ChatMessage>;
export declare function assertValidChatThread(thread: ChatThread): void;
export declare function assertValidChatMessage(message: ChatMessage): void;
export declare function assertMatchingScope(expected: ChatScope, actual: ChatScope, field?: string): void;
export declare function assertThreadMessageScope(thread: ChatThread, message: ChatMessage): void;
export declare function isSameScope(left: ChatScope, right: ChatScope): boolean;