import type { ChatDeleteMetadata, ChatExportOptions, ChatExportRecord, ChatMessage, ChatRedactionMetadata, ChatScope, ChatThread } from "./types/chat.js";
export declare function redactedMessage(message: ChatMessage, redaction: ChatRedactionMetadata): ChatMessage;
export declare function tombstonedThread(thread: ChatThread, deletion: ChatDeleteMetadata): ChatThread;
export declare function tombstonedMessage(message: ChatMessage, deletion: ChatDeleteMetadata): ChatMessage;
export declare function threadExportRecord({ scope, thread, messages, options, }: {
    scope: ChatScope;
    thread: ChatThread;
    messages: ChatMessage[];
    options: ChatExportOptions;
}): ChatExportRecord;