/**
 * Parse a CSS font-family string into primary font and fallback stack.
 *
 * primary  = first comma-separated token
 * fallback = everything after the first token, joined back
 *
 * Examples:
 *   "Roboto, sans-serif"            → { primary: "Roboto",    fallback: "sans-serif" }
 *   "Roboto, Georgia, serif"        → { primary: "Roboto",    fallback: "Georgia, serif" }
 *   "Helvetica, Arial, sans-serif"  → { primary: "Helvetica", fallback: "Arial, sans-serif" }
 */
export declare function parseFontFamily(fontFamily: string | null | undefined): {
    primary: string;
    fallback: string;
};
/**
 * Build a CSS font-family string from a primary font and a fallback stack.
 *
 * Examples:
 *   buildFontFamily("Roboto", "sans-serif")       → "Roboto, sans-serif"
 *   buildFontFamily("Roboto", "Georgia, serif")   → "Roboto, Georgia, serif"
 */
export declare function buildFontFamily(primary: string, fallback: string): string;