human readable time code wars

humanReadable.js

const quotientFunctions = {
  year: time => Math.floor(time / (365 * 24 * 60 * 60)),
  day: time => Math.floor((time / (24 * 60 * 60)) % 365),
  hour: time => Math.floor((time / (60 * 60)) % 24),
  minute: time => Math.floor((time / 60) % 60),
  second: time => Math.floor(time % 60),
};
const pluralize = ({
  str,
  quotient
}) => quotient > 1 ? `${quotient} ${str}s` : `${quotient} ${str}`;
const humanReadable = time => Object.entries(quotientFunctions)
  .map(([str, quotient]) => ({
    str,
    quotient: quotient(time),
  }))
  .filter(({ quotient }) => quotient >= 1) // prevent '0 year 0 day...' polluting the final string
  .map(pluralize).join(' and ');

console.log(humanReadable(62));
console.log(humanReadable(90));
console.log(humanReadable(3662));
console.log(humanReadable(84600));
console.log(humanReadable(120000));
console.log(humanReadable((365 * 24 * 60 * 60 * 2) + (80 * 60 * 60) + 124));