/**
 * String utility functions for Archbase Core
 */
export declare function isEmptyString(value: unknown): value is string;
export declare function isNotEmptyString(value: unknown): value is string;
export declare function capitalize(str: string): string;
export declare function camelCase(str: string): string;
export declare function kebabCase(str: string): string;
export declare function snakeCase(str: string): string;
export declare function truncate(str: string, length: number, suffix?: string): string;
export declare function slugify(str: string): string;