import { Message } from '../types/api';
export interface ConversationState {
    id: string;
    system?: string;
    messages: Message[];
    tokensUsed: number;
    createdAt: string;
    updatedAt: string;
    expiresAt: string;
}
export declare function getConversation(conversationId: string): ConversationState | undefined;
export declare function createConversation(initial: {
    system?: string;
    message: Message;
}, model?: string): ConversationState;
export declare function saveConversation(state: ConversationState, model?: string): void;
export declare function deleteConversation(conversationId: string): boolean;
export declare function clearConversations(): void;
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