export interface MessagePart {
    type: 'text' | 'audio' | 'data' | 'file';
    text?: string;
    audio?: string;
    data?: any;
    file?: File;
}
export interface Message {
    id: string;
    role: "user" | "assistant" | "system";
    parts: MessagePart[];
    createdAt?: string;
    content?: string;
    mimetype?: "text" | "audio";
}
export interface LegacyMessage {
    role: "user" | "assistant" | "system";
    content: string;
    mimetype?: "text" | "audio";
}
export type ChatSession = {
    messages: Message[];
    sessionId: string;
    createdAt: string;
    expiresAt?: string;
};
export type StaticAgent = {
    id: string;
    name: string;
    description: string;
    endpoint: string;
};
export declare const createTextMessage: (content: string, role?: "user" | "assistant" | "system", id?: string) => Message;
export declare const createAudioMessage: (audioData: string, role?: "user" | "assistant" | "system", id?: string) => Message;
export declare const legacyToNewMessage: (legacyMessage: LegacyMessage, id?: string) => Message;
export declare const newToLegacyMessage: (message: Message) => LegacyMessage;
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