/**
 * Generate a string with random alphanumeric characters with a specific length.
 *
 * @param {number} length - The length of the string to return.
 * @returns {string} A string of random alphanumeric characters with the
 * specified length.
 */
export declare function randomAlphanumString(length: number): string;
/**
 * Get random element of array or string.
 *
 * @param {Array|string} arr - Source.
 * @returns {Array|string} Array element or string character.
 */
export declare function randomElement<T>(arr: readonly T[]): T;
export declare function randomElement(arr: string): string;
/**
 * Returns a random hex digit.
 *
 * @returns {Array|string}
 */
export declare function randomHexDigit(): string;
/**
 * Generates a string of random hexadecimal digits with a specific length.
 *
 * @param {number} length - The length of the string to return.
 * @returns {string} A string of random hexadecimal digits with the specified
 * length.
 */
export declare function randomHexString(length: number): string;
/**
 * Generates random int within the range [min, max].
 *
 * @param {number} min - The minimum value for the generated number.
 * @param {number} max - The maximum value for the generated number.
 * @returns {number} Random int number.
 */
export declare function randomInt(min: number, max: number): number;