uhrwerk 🕰

Minimal time duration utility. Replacement for MomentJS Durations. If you are looking into the time component of MomentJS check out this awesome library dayjs.

📦 It's tiny: 2kB vs moment js 295kB

🌈 No dependencies, types included.

Quickstart 🚀

import { Duration } from 'uhrwerk'

const d = new Duration(10, 'days')
d.subtract(1, 'week')
d.add(5, 'minutes')

d.humanize() // '3 days'
d.minutes() // 5
d.asMinute() // 4325

d.subtract(3, 'days')
d.humanize() // 'a few minutes'

Reference 📒

new Duration(amount, interval)

• amount: number
• interval:
  • millisecond, milliseconds, ms
  • second, seconds, s
  • minute, minutes, m
  • hour, hours, h
  • day, days, d
  • week, weeks, w
  • year, years, y

Examples

const a = new Duration(1, 'day')
const b = new Duration(2, 'days')
const c = new Duration(0.5, 'year')
const d = new Duration(Date.now(), 'ms')

.add(amount, interval)

Adds a specified amount to an existing duration

Example

const a = new Duration(1, 'day')
a.add(12, 'hours')
a.asHour() // 36

.subtract(amount, interval)

Subtracts a specified amount to an existing duration

Example

const a = new Duration(1, 'day')
a.subtract(12, 'hours')
a.asHour() // 12

Getters

Gets the amount of time interval, not the total time

• .milliseconds()
• .seconds()
• .minutes()
• .hours()
• .days()
• .weeks()
• .years()

Example

const a = new Duration(1, 'day')
a.days() // 1
a.add(5, 'minutes')
a.days() // 1
a.add(1, 'year')
a.days() // 1
a.add(24, 'hours')
a.days() // 2

As interval

Calculates the time duration as a time interval.

• .asMilliseconds()
• .asSeconds()
• .asMinutes()
• .asHours()
• .asDays()
• .asWeeks()
• .asYears()

Example

const a = new Duration(1, 'day')
a.asHours() // 24

.humanize()

This functions takes a duration and tries to make a human readable version out of it.

Example

const a = new Duration(4, 'seconds')
a.humanize() // 'a moment'
a.add(5, 'minutes')
a.humanize() // 'a few minutes'

Own rules / i18n

If you want to pass a different humanize function you can. The order of the array is important. The first match will return, like in a standard server router. The first argument is a function that takes the duration and returns a boolean. The second takes also matched duration and returns a string for the user.

Example

const humanizer = [
  [(d) => d.days() > 1, (d) => `${d.days()} days`],
  [(d) => d.days() > 0, (d) => `1 day`],
  [() => true, () => 'catch all, below 1 day'],
]

const a = new Duration(2, 'days')
a.humanize(humanizer) // '2 days'
a.subtract(1, 'day')
a.humanize(humanizer) // '1 day'
a.subtract(12, 'hours')
a.humanize(humanizer) // 'catch all, below 1 day'