import { Message, HistoryEntry } from '../types';
import { UnifiedHistoryManager } from '../history/unified-history-manager';
import { Logger } from '../utils/logger';
/**
 * Filters an array of message objects for sending to the API.
 */
export declare function filterHistoryForApi(messages: Message[]): Message[];
/**
 * Prepares the list of messages to be sent to the API.
 */
export declare function prepareMessagesForApi(params: {
    user?: string;
    group?: string | null;
    prompt: string;
    systemPrompt?: string | null;
    customMessages?: Message[] | null;
    _loadedHistoryEntries?: HistoryEntry[];
    getHistoryKeyFn: (user: string, group?: string | null) => string;
}, historyManager: UnifiedHistoryManager, logger: Logger): Promise<Message[]>;
export {};