import type { Readable, Writable } from 'node:stream';
export declare const syncStart = "\u001B[?2026h";
export declare const syncEnd = "\u001B[?2026l";
type StdioStreams = {
    stdin: Readable | NodeJS.ReadStream;
    stdout: Writable | NodeJS.WriteStream;
};
/**
 * Detects if the terminal supports synchronized output by querying using DECRQM.
 * Returns true if supported, false otherwise.
 *
 * @param streams - stdin/stdout streams to use for querying
 * @param timeout - Maximum time to wait for response in ms (default: 100)
 */
export declare function detectSynchronizedOutput(streams: StdioStreams, timeout?: number): Promise<boolean>;
/**
 * Detects synchronized output support with caching.
 * Once detected, the result is cached for subsequent calls.
 */
export declare function isSynchronizedOutputSupported(streams: StdioStreams, timeout?: number): Promise<boolean>;
/**
 * Reset the cached support value (mainly for testing).
 */
export declare function resetSynchronizedOutputCache(): void;
export {};