/**
 * Utilities for reading input from stdin.
 */
/**
 * Check if stdin has data available (is being piped to).
 * Returns true if stdin is not a TTY (i.e., data is being piped).
 */
export declare function hasStdinData(): boolean;
/**
 * Read all data from stdin and return as a string.
 * Returns empty string if stdin is a TTY (no piped data).
 */
export declare function readStdin(): Promise<string>;
/**
 * Parse IDs from a string input.
 * Accepts IDs separated by newlines, commas, or whitespace.
 * Returns an array of valid positive integers.
 *
 * @param input - Raw string input containing IDs
 * @returns Array of parsed integer IDs
 * @throws Error if any ID is invalid (not a positive integer)
 */
export declare function parseIds(input: string): number[];
/**
 * Read and parse IDs from stdin.
 * Combines readStdin() and parseIds().
 *
 * @returns Array of parsed integer IDs, or empty array if no stdin data
 */
export declare function readIdsFromStdin(): Promise<number[]>;
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