type TuiCallbacks = {
    onSubmit: (text: string) => Promise<void>;
    onExit: () => void;
};
export declare class ChatTUI {
    private callbacks;
    private rl;
    private history;
    private inputPrompt;
    private streamingActive;
    private spinnerTimer;
    private spinnerFrames;
    private spinnerIndex;
    private spinnerLabel;
    private statusEnabled;
    private lastPhase;
    private lastToolName;
    private isClosed;
    constructor(callbacks: TuiCallbacks);
    private bind;
    private ask;
    appendAssistantChunk(chunk: string): void;
    appendToolEvent(text: string): void;
    private render;
    private startSpinner;
    private stopSpinner;
    setStatusPhase(phase: 'Thinking' | 'Tool' | 'Waiting' | 'Generating' | 'Done', toolName?: string): void;
}
export {};