Duration functions and polyfill

duration-dynamic-polyfill.js

import duration from "./duration-functions.js";

for (const unit of Object.keys(duration)) {
  Number[unit] = function (n) {
    return Number(n)[unit]();
  }
  
  Number.prototype[unit] = function () {
    return duration[unit](this);
  }
}

duration-functions.js

// miliseconds = n => n - identity

const seconds = n => n * 1000;

const minutes = n => seconds(n) * 60;

const hours = n => minutes(n) * 60;

const days = n => hours(n) * 24;

const weeks = n => days(n) * 7;

const months = (n) => days(n) * 30;
// unsure and unlikely - generic use of duration result is not likely in this context

const years = (n) => days(n) * 365;
// likewise here, and all additional units below

const decades = n => years(n) * 10;

const centries = n => years(n) * 100;

const millennia = n => years(n) * 1000;

export {
  seconds,
  minutes,
  hours,
  days,
  weeks,
  months,
  years,
  decades,
  centries,
  millennia
}

duration-polyfill.js

import duration from "./duration-functions.js";

for (const unit of Object.keys(duration)) {
  Number[unit] = function (n) {
    return Number(n)[unit]();
  }
  
  Number.prototype[unit] = function () {
    return duration[unit](this);
  }
}