/**
 * Chunks a string
 * @param str String to chunk
 * @param n Array of check elements
 */
export declare function chunk(str: string, n: number): string[];
/**
 * Converts a byte to a character
 * @param byte byte to convert
 * @return character in string
 */
export declare function byteToASCII(byte: number): string;
/**
 * Converts a string containing hex values to an ascii string
 * @param value string to convert
 * @param chunkSize Size of the chuck of hex values
 * @return ascii string
 */
export declare function hexStringToASCII(value: string, chunkSize: number): string;
/**
 * Converts a int32 in an array of bytes
 * @param num Number to convert
 * @return array of bytes
 */
export declare function int32ToBytes(num: number): Array<number>;
/**
 * Converts a int 32 to an ascii string
 * @param value integer to convert
 * @return ascii string
 */
export declare function int32ToASCII(value: number): string;
/**
 * Convert a hex string to a byte array
 **/
export declare function hexToBytes(hex: string): Array<number>;
/**
 * Convert a byte array to a hex string
 **/
export declare function bytesToHex(bytes: Array<number>): string;
/**
 * Convert a hex string to a base64 string
 **/
export declare function hexToBase64(hexString: string): string;
/**
 * Convert a base64 string to a hex string
 **/
export declare function base64ToHex(base64String: string): string;
/**
 * Compare two strings.
 * @param a First string
 * @param b Second string
 * @return <0 if a>b, 0 if a=b, >0 if a<b
 */
export declare function compareStringsLowerCase(a: string, b: string): number;
export declare function formatHexadecimal(value: number, pad?: number): string;
export declare function formatBinary(value: number, pad?: number): string;
export declare function formatAddress(value: number): string;
export declare function formatDecimal(value: number): string;
export declare enum NumberFormat {
    BINARY = 0,
    DECIMAL = 1,
    HEXADECIMAL = 2
}
export declare function formatNumber(value: number, displayFormat?: NumberFormat, minBytes?: number): string;
export declare function splitLines(value: string): string[];
export declare function bitValue(num: number, hi: number, lo?: number): number;
/**
 * String replace with async callback
 */
export declare function replaceAsync(str: string, regex: RegExp, asyncFn: (match: string, ...args: any[]) => Promise<string>): Promise<string>;