Moment / Luxon migration toolkit

What you configure

loadDateFormattingCompatibility

Select moment or luxon3 from the interoperability toolkit.

peer dependency

Install the selected date library in the consuming application.

formatting configuration

Review the legacy format strings, locale settings, and time-zone expectations.

Integration code example

1. Identify which date library the existing application actually uses.
2. Install that peer and load its compatibility plugin through the licensed toolkit.
3. Validate representative labels, locales, and time zones before completing migration.

Copy this TypeScript into your application, not the browser console. Replace YOUR_WTS_LICENSE_KEY with an entitlement issued for your deployment origin. A WTS license is not a Google, Microsoft or CalDAV credential. These examples are documentation only and never execute on this page.

npm install @wts-calendar/core moment

import type { CalendarOptions } from '@wts-calendar/core';
import { verifyCalendarLicense } from '@wts-calendar/core';
import { PremiumCalendarInteroperability } from '@wts-calendar/core/premium-interoperability';

const license = await verifyCalendarLicense('YOUR_WTS_LICENSE_KEY');
const interoperability = new PremiumCalendarInteroperability({ license });

// Install only the compatibility peer you select.
const formattingPlugin = await interoperability.loadDateFormattingCompatibility('moment');
export const label = formattingPlugin.format(
  new Date('2026-09-07T09:30:00Z'),
  'dddd, MMMM D YYYY [at] HH:mm',
  { locale: 'en-US', timeZone: 'UTC' },
);
// Pass the plugin in your calendar's plugins array when using legacy format strings.
export const calendarOptions = { plugins: [formattingPlugin] } satisfies Pick<CalendarOptions, 'plugins'>;
// Luxon alternative: loadDateFormattingCompatibility('luxon3') with Luxon patterns.

Application responsibilities

Install moment for the shown example. For Luxon, install luxon and select luxon3; Moment and Luxon pattern syntaxes are not interchangeable.

Behavior and lifecycle

• Selecting one peer does not automatically load the other.
• Existing direct format-moment and format-luxon3 entry points remain available separately.