function addZeroimport { addZero } from "https://deno.land/x/durationjs@v4.1.0/src/duration.ts"; addZero(num: number, digits?): stringAdd zeros to the beginning of a number till it reaches a certain digit count. Parametersnum: numberNumber to add zeros to. optionaldigits = [UNSUPPORTED]Number of digits the number has to reach. Returnsstring