import type { MediaRef } from '../media/types.js';
export interface UserTurnAttachment {
    id?: string;
    type: string;
    mimeType?: string;
    data?: string;
    uri?: string;
    name?: string;
    size?: number;
    workspaceRelativePath?: string;
    durationSeconds?: number;
}
export interface UserTurnInput {
    text: string;
    attachments?: UserTurnAttachment[];
}
export declare function mediaRefsToUserTurnAttachments(media: MediaRef[] | undefined): UserTurnAttachment[] | undefined;