declare function formatNumber(value: number): string;
declare function formatCompactNumber(value: number): string;
declare function formatPercentage(value: number, decimals?: number): string;
declare function formatFileSize(bytes: number): string;
declare function formatRelativeTime(date: Date): string;
declare function formatDate(date: Date): string;
declare function formatDateTime(date: Date): string;
declare function formatDuration(ms: number): string;
declare function formatMetric(value: number, unit?: 'number' | 'bytes' | 'percentage' | 'duration'): string;
declare function formatRange(min: number, max: number): string;
declare function formatDecimal(value: number, decimals?: number): string;

export { formatCompactNumber, formatDate, formatDateTime, formatDecimal, formatDuration, formatFileSize, formatMetric, formatNumber, formatPercentage, formatRange, formatRelativeTime };