Duration

A dart inspired approach to work with durations.

This package is heavily inspired by the dart Duration class. It is a wrapper around the Duration class with some additional features.

Installation

npm install js-duration

or with yarn

yarn add js-duration

Features

• Calculate the duration between two dates
• Calculate the absolute duration of an complex number of days, hours, minutes, seconds, milliseconds and or microseconds
• Do calculations with durations created by this package
• Convert a duration to a human readable string
• Compare two durations

What this package is not supposed to do

• Calculate the duration between two dates with different timezones
• Instantiate a duration from a string
• Do calculations with durations created by the dart Duration class

Why this package?

There are multiple packages out there that work with durations in different ways. Some cache packages tend to work with minutes for API requests and others milliseconds, but what if you want to work with seconds? hours? days? Or receive a weird duration in milliseconds from an external source and format a readable string with the absolute time of this weird millisecond integer. This package is supposed to be a wrapper around the dart Duration class with some additional features.

Usage

Calculate the duration between two dates

import { Duration } from 'js-duration';

const distance = Duration.between(
  new Date('2021-01-01'),
  new Date('2021-01-02')
);

console.log(distance.inDays); // 1
console.log(distance); // 1d

Calculate the absolute duration of an complex number of days, hours, minutes, seconds, milliseconds and or microseconds

import { Duration } from 'js-duration';

const duration = Duration.of({
  days: 1,
  hours: 2,
  minutes: 3,
  seconds: 4,
  milliseconds: 5,
});

console.log(duration.inMilliseconds); // 93784005
console.log(duration.toString()); // 1d 2h 3m 4s 5ms

Do calculations with durations created by this package

import { Duration } from 'js-duration';

const duration = Duration.of({
  days: 1,
});

const duration2 = Duration.of({
  hours: 2,
});

const duration3 = duration.add(duration2);

console.log(duration3.inHours); // 26
console.log(duration3.toString()); // 1d 2h