/**
 * Convert a number to a string.
 *
 * @param n number to convert
 * @param base base of the number
 * @param size zero-pad to this many digits
 */
export function pad(n: number, base: number, size: number): string {
    let s = n.toString(base);

    if (base === 16) {
        // I prefer upper case hex.
        s = s.toUpperCase();
    }

    while (s.length < size) {
        s = "0" + s;
    }

    return s;
}