/**
 * Get the terminal width in columns.
 * Returns the actual width if available, or a sensible default.
  *
 * CRITICAL: We subtract 1 to leave a margin, preventing content from reaching
 * the terminal edge. This prevents auto-wrap issues and cursor positioning problems,
 * similar to how OhMyZsh works. Content will never exceed (terminalWidth - 1).
 */
export declare function getTerminalWidth(): number;
/**
 * Get the terminal height in rows.
 * Returns the actual height if available, or a sensible default.
 */
export declare function getTerminalHeight(): number;
/**
 * Check if stdout is a TTY (interactive terminal)
 */
export declare function isTTY(): boolean;
/**
 * Listen for terminal resize events and call the callback with new dimensions
 * Returns a cleanup function to remove the listener
 *
 * Uses singleton pattern: only one listener on process.stdout, but tracks all callbacks
 * This prevents MaxListenersExceededWarning when multiple regions are created
 */
export declare function onResize(callback: (width: number, height: number) => void): () => void;
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