/**
 * Output Formatting Utilities
 *
 * Provides consistent output formatting for tables, lists, and structured data.
 */
/**
 * Print a labeled value
 *
 * @example
 * printField('Project', 'my-project');
 * // Output: Project: my-project
 */
export declare function printField(label: string, value: string | null | undefined): void;
/**
 * Print a section header
 *
 * @example
 * printHeader('Configuration');
 * // Output:
 * // Configuration
 * // ─────────────
 */
export declare function printHeader(title: string): void;
/**
 * Print a blank line
 */
export declare function printBlank(): void;
/**
 * Print a list of items
 *
 * @example
 * printList(['Item 1', 'Item 2', 'Item 3']);
 * // Output:
 * // • Item 1
 * // • Item 2
 * // • Item 3
 */
export declare function printList(items: string[], bullet?: string): void;
/**
 * Print a success message
 *
 * @example
 * printSuccess('Configuration saved');
 * // Output: ✓ Configuration saved
 */
export declare function printSuccess(message: string): void;
/**
 * Print an error message
 *
 * @example
 * printError('Failed to connect');
 * // Output: ✗ Failed to connect
 */
export declare function printError(message: string): void;
/**
 * Print a warning message
 *
 * @example
 * printWarning('API key will expire soon');
 * // Output: ⚠ API key will expire soon
 */
export declare function printWarning(message: string): void;
/**
 * Print an info message
 *
 * @example
 * printInfo('Fetching data...');
 * // Output: ℹ Fetching data...
 */
export declare function printInfo(message: string): void;
/**
 * Print a key-value table
 *
 * @example
 * printTable({
 *   'Project': 'my-project',
 *   'Specification': 'v2.0',
 *   'Status': 'active',
 * });
 */
export declare function printTable(data: Record<string, string | null | undefined>): void;
/**
 * Print JSON output (for --format json)
 *
 * @example
 * printJson({ project: 'my-project', status: 'active' });
 */
export declare function printJson(data: unknown): void;
/**
 * Print a command hint
 *
 * @example
 * printHint('specforge init', 'Initialize project');
 * // Output: → Run `specforge init` to initialize project
 */
export declare function printHint(command: string, description: string): void;
/**
 * Print a URL with description
 *
 * @example
 * printLink('https://specforge.com', 'Visit documentation');
 * // Output: → Visit documentation: https://specforge.com
 */
export declare function printLink(url: string, description: string): void;
/**
 * Format bytes to human readable size
 */
export declare function formatBytes(bytes: number): string;
/**
 * Format duration in milliseconds to human readable
 */
export declare function formatDuration(ms: number): string;
/**
 * Truncate string with ellipsis
 */
export declare function truncate(str: string, maxLength: number): string;
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