/**
 * Generate a new nano id (https://github.com/ai/nanoid)
 * @param size - Size of the id
 * @param chars - Valid characters
 */
export declare function generateIdSync(size?: number, chars?: string): string;
/**
 * Generate a new nano id (https://github.com/ai/nanoid)
 * @param size - Size of the id
 * @param chars - Valid characters
 */
export declare function generateSlug(size?: number, chars?: string): {
    slug: string;
    size: number;
};