import type { AvatarSize } from './mud-avatar.types';
/**
 * Maps the avatar `size` rung to the icon glyph size in CSS pixels.
 *
 * The avatar slot is a circle whose diameter is the rung value
 * (24 / 32 / 40 / 48 / 72 px); the glyph inside follows the design system's
 * icon scale (12 / 16 / 20 / 24 / 32 px). `xl` is clamped to 24 because
 * `mud-icon` does not yet ship a 32-px variant — the icon visually centres
 * inside the larger circle.
 */
export declare const ICON_SIZE_FOR: Record<AvatarSize, 12 | 16 | 20 | 24>;
/**
 * Derives initials from a person's full name. Returns at most two characters,
 * uppercased. Returns an empty string for blank input.
 *
 * The split happens on whitespace or hyphens so compound first names
 * (`Maria-Andreea Pop`) collapse to the first letter of the first segment
 * plus the first letter of the last segment.
 *
 * @example
 *   deriveInitials('Ion Popescu')          // 'IP'
 *   deriveInitials('Maria-Andreea Pop')    // 'MP'
 *   deriveInitials('Ștefan')               // 'Ș'
 *   deriveInitials('')                     // ''
 */
export declare function deriveInitials(name: string | undefined): string;