export declare const formatUserName: (name?: string) => string;
export declare const getInititalName: (existing: string[], fullName?: string, maxLength?: number) => string;
export declare const getInitialsByConsonant: (existingInitials: string[], fullName: string, maxLength: number) => string;
export declare const getInitialsBy3FirstLetter: (existingInitials: string[], fullName: string, maxLength: number) => string;
/**
 * Formats the label with the appropriate article ("a" or "an") based on its vowel sound.
 * This function checks if the label starts with a vowel or has a special case for silent "h" words.
 * It ensures that the correct article ("a" or "an") is used according to English pronunciation rules.
 *
 * For example:
 * - "hour" will be prefixed with "an" (due to the silent "h").
 * - "unicorn" will be prefixed with "a" (due to the "u" sound).
 *
 * @param {string} [label] - The label to be formatted. If no label is provided, returns an empty string.
 * @returns {string} The label prefixed with the appropriate article ("a" or "an").
 */
export declare const formatVowelSoundLabel: (label?: string) => string;