/** Ask on stdin. Interactive TTYs and PIPED input both work (a piped line
 * answers the question — PR #491 review: a bare !isTTY guard wrongly rejected
 * pipes). What can no longer happen is the headless HANG (issue #490): when
 * stdin closes without delivering an answer (/dev/null, empty pipe), readline
 * fires 'close' with the question callback never run — we now reject on that,
 * in milliseconds, naming the flag to pass instead. Streams are injectable for
 * tests. */
export declare function promptText(question: string, input?: NodeJS.ReadableStream, output?: NodeJS.WritableStream): Promise<string>;
export declare function promptSelect(question: string, options: string[]): Promise<number>;
export declare function promptYesNo(question: string, def?: boolean): Promise<boolean>;
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