Dayjs-timezone-iana-plugin

DayJS timezone plugin alternative to manage DST correctly, using https://www.iana.org/time-zones

Usage

1   npm i dayjs-timezone-iana-plugin

In the code:

1   // -> remove dayjs.extend(timezone)
2   dayjs.extend(utc)
3   dayjs.extend(require('dayjs-timezone-iana-plugin'))
4
5   dayjs('2014-06-01 12:00').tz('America/New_York')
6   // You can set a default timezone
7   dayjsFactory.tz.setDefault('America/New_York')

Philosophy

The code is quite simple and is largely inspired by moment-timezone.

It includes the latest database IANA 2021e (96KB compressed). It takes more space than the method used by DayJS or Luxon. But it works even if NodeJS is compiled with small-icu.

How to update IANA DB

• go to https://github.com/moment/moment-timezone/tree/develop/data/unpacked
• download latest.json https://github.com/moment/moment-timezone/blob/develop/data/unpacked/latest.json
• execute npm run optimize
• commit, push

Todo

• Add lot of tests (see moment-timezone tests)

Maintained by https://carbone.io/ and https://www.easilys.com/