declare function invertCase(str: string): string;

declare function maskString(str: string, mask: string, maskStart: number, maskLength: number): string;

declare function slugify(str: string): string;

declare function toCamelCase(str: string): string;

declare function toKebabCase(str: string): string;

declare function toPascalCase(str: string): string;

declare function toSnakeCase(str: string): string;

declare function truncate(text: string, size: number): string;

declare function wordCount(str: string): number;

declare function capitalize(str: string): string;

declare function removeAccents(str: string): string;

declare function isLowerCase(str: string): boolean;

declare function isUpperCase(str: string): boolean;

export { capitalize, invertCase, isLowerCase, isUpperCase, maskString, removeAccents, slugify, toCamelCase, toKebabCase, toPascalCase, toSnakeCase, truncate, wordCount };