/**
 * Converts a hex color to rgba with the specified alpha value
 * @param color - Hex color code (e.g., '#FFD700')
 * @param opacity - Alpha value between 0 and 1
 * @returns RGBA color string
 */
export declare function alpha(color: string, opacity: number): string;
export { parsePhone, formatPhone, formatCurrency, parseCurrency, formatPercentage, parsePercentage, type CardType, detectCardType, formatCardNumber, parseCardNumber, luhnValidate, validateRoutingNumber, digitsOnly, maskTail, } from './formatters';
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