/**
 * UI utility functions for terminal handling
 */
/**
 * Check if stdout is a TTY (interactive terminal)
 */
export declare const isTTY: boolean;
/**
 * Get terminal width, with fallback for non-TTY environments
 */
export declare function getTerminalWidth(): number;
/**
 * Render different output based on TTY availability
 * @param ttyOutput Output for interactive terminals
 * @param plainOutput Output for non-TTY (CI/CD) environments
 */
export declare function renderConditional(ttyOutput: string, plainOutput: string): string;
/**
 * Center text within a given width
 */
export declare function centerText(text: string, width: number): string;
/**
 * Pad text to a specific width (accounting for ANSI codes)
 */
export declare function padText(text: string, width: number, align?: 'left' | 'right' | 'center'): string;
/**
 * Strip ANSI escape codes from string (for length calculations)
 */
export declare function stripAnsi(str: string): string;
/**
 * Truncate text to fit within a width, adding ellipsis if needed
 */
export declare function truncate(text: string, maxWidth: number): string;
/**
 * Format duration in a human-readable way
 */
export declare function formatDuration(ms: number): string;
/**
 * Format a number with commas for readability
 */
export declare function formatNumber(num: number): string;
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