@thi.ng/date/duration.js

Datetime types, relative dates, math, iterators, composable formatters, locales

import {
  DAY,
  HOUR,
  MINUTE,
  MONTH,
  PERIODS,
  SECOND,
  WEEK,
  YEAR
} from "./api.js";
const decomposeDuration = (dur) => {
  const year = dur / YEAR | 0;
  dur -= year * YEAR;
  const month = dur / MONTH | 0;
  dur -= month * MONTH;
  const day = dur / DAY | 0;
  dur -= day * DAY;
  const hour = dur / HOUR | 0;
  dur -= hour * HOUR;
  const min = dur / MINUTE | 0;
  dur -= min * MINUTE;
  const sec = dur / SECOND | 0;
  dur -= sec * SECOND;
  return [year, month, day, hour, min, sec, dur];
};
const composeDuration = (parts) => {
  let dur = (parts.y || 0) * YEAR;
  dur += (parts.M || 0) * MONTH;
  dur += (parts.d || 0) * DAY;
  dur += (parts.h || 0) * HOUR;
  dur += (parts.m || 0) * MINUTE;
  dur += (parts.s || 0) * SECOND;
  dur += parts.t || 0;
  return dur;
};
const durationAs = (prec, dur) => dur / PERIODS[prec];
const asSeconds = (dur) => dur / SECOND;
const asMinutes = (dur) => dur / MINUTE;
const asHours = (dur) => dur / HOUR;
const asDays = (dur) => dur / DAY;
const asWeeks = (dur) => dur / WEEK;
const asMonths = (dur) => dur / MONTH;
const asYears = (dur) => dur / YEAR;
export {
  asDays,
  asHours,
  asMinutes,
  asMonths,
  asSeconds,
  asWeeks,
  asYears,
  composeDuration,
  decomposeDuration,
  durationAs
};