IGAPP-281: Remove moment.js

[jira-to-github-migrator-test]

Michael Markl - 24.6.2020, 16:06:51

We want to remove moment.js as it is no longer required in modern browsers.

Check before starting:

• Hermes on Android must support Intl (x) (Intl Support facebook/hermes#23)
• iOS must support Intl (/)
• Chrome/Firefox must support Intl (/)

• • IE must support Intl (?)-

Replace usages of moment with plain Date and Intl support. This works in modern browsers without polyfills. If Intl is not available then use a naive way of formatting the date. IE is not using it.

Arithmetic operations (isBefore, isAfter, +,-) should be trivial to support via the Date API.

Parsing in the API client only works by using ISO8601 strings. This means the api needs to deliver properly formatted time strings.

Acceptance Criteria:

• moment is no longer used in any files in integreat-app
• Formatting works perfectly Firefox, Chrome, Android, iOS
• Locales like de, en, fa, ar, ps, ckb, kmr are reasonably supported
• Formatting does not throw errors in IE11
• Upgrade i18next to v21 or create a new issue (blocked by intl support)

Environment: -
Linked issues:

• Blocks: IGAPP-1107
• Blocks: IGAPP-39
• Blocks: IGAPP-92
• Blocks: IGAPP-399
• Blocks: IGAPP-1321
• Blocks: IGAPP-195
• Relates: IGAPP-28
• Relates: IGAPP-42
• Relates: IGAPP-277
• Relates: IGAPP-195
• Relates: IGAPP-399

[jira-to-github-migrator-test]

Max Ammann - 21.9.2020, 10:52:49

This is important as moment.js is done: https://momentjs.com/docs/#/-project-status/

Maybe https://moment.github.io/luxon/ is good.

Max Ammann - 10.3.2021, 14:16:38

https://date-fns.org/

Max Ammann - 10.3.2021, 14:18:04

For polyfills: https://formatjs.io/docs/polyfills/

Andreas Fischer - 5.10.2022, 14:36:51

Another possibility to check: https://github.com/iamkun/dayjs
or to use plain JS

sarahsporck - 27.3.2023, 11:21:13

Imo I think we should stick with luxon as rrule already depends on luxon.