import { Logger, LogLevel } from '../../public/node/output.js';
import React from 'react';
import { Key, RenderOptions } from 'ink';
import { EventEmitter } from 'events';
/**
 * Signal that the current Ink tree is done. Must be called within an
 * InkLifecycleRoot — throws if the provider is missing so lifecycle
 * bugs surface immediately instead of silently hanging.
 */
export declare function useComplete(): (error?: Error) => void;
/**
 * Root wrapper for Ink trees. Owns the single `exit()` call site — children
 * signal completion via `useComplete()`, which sets state here. The `useEffect`
 * fires post-render, guaranteeing all batched state updates have been flushed
 * before the tree is torn down.
 */
export declare function InkLifecycleRoot({ children }: {
    children: React.ReactNode;
}): React.JSX.Element;
interface RenderOnceOptions {
    logLevel?: LogLevel;
    logger?: Logger;
    renderOptions?: RenderOptions;
}
export declare function renderOnce(element: JSX.Element, { logLevel, renderOptions }: RenderOnceOptions): string | undefined;
export declare function render(element: JSX.Element, options?: RenderOptions): Promise<void>;
export declare class Stdout extends EventEmitter {
    columns: number;
    rows: number;
    readonly frames: string[];
    private _lastFrame?;
    constructor(options: {
        columns?: number;
        rows?: number;
    });
    write: (frame: string) => void;
    lastFrame: () => string | undefined;
}
export declare function handleCtrlC(input: string, key: Key, exit?: () => void): void;
export {};