export function studlyCase(str: unknown): string;
export function kebabCase(str: unknown): string;
export function snakeCase(str: unknown): string;
export function camelCase(str: unknown): string;
export function camelToWords(str: unknown): string;
export function titleCase(str: unknown): string;
export function randString(length: number): string;
export function reverseString(str: unknown): string;