/**
 * Make it a number from hex string
 * @param num
 * @param digit
 * @returns hexstring
 */
export declare const numberToHexString: (num: number, digit: number) => string;
/**
 * Create an initialized typed-array
 * @param size array length
 * @param init_val initialize value
 * @returns initialized typed-arrray
 */
export declare const createArray: (size: number, init_val?: number) => Uint32Array;
/**
 * max value of object propaties
 * @param spec enum-like Object
 * @returns max value
 */
export declare const getSpecMax: (spec: Object) => number;