v4.2.0: Add timezone features and improve code organization #116
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Move TimeZone interface and helper functions from timezone.ts to a new zone.ts file to improve code organization and prepare for adding consolidated timezone imports feature. This change does not affect the external API or functionality.
… support
Add two new ways to use timezones:
1. Consolidated imports: Import multiple timezones from a single module
import { Tokyo, New_York } from 'date-and-time/timezone';
2. IANA timezone name strings: Use timezone names directly in format()
format(date, 'YYYY-MM-DD HH:mm', { timeZone: 'Asia/Tokyo' });
The tools/timezone.ts script now generates both individual timezone files
and an integrated timezone.ts file for consolidated imports.
Note: The parse() function does not support IANA name strings, only
TimeZone objects and the "UTC" string.
Add comprehensive tests for: - Consolidated timezone imports from 'date-and-time/timezone' - IANA timezone name string support in format() - Ensure both import methods produce identical results
Update all documentation to explain the three methods for specifying timezones: 1. Individual imports (date-and-time/timezones/Asia/Tokyo) 2. Consolidated imports (date-and-time/timezone) 3. IANA timezone name strings (format only) Add migration guide for v4.2.0 with detailed examples and usage notes.
Update version to 4.2.0 to reflect new timezone features. Update development dependencies to their latest versions.
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Summary
This PR introduces major enhancements to timezone handling and improves code organization:
TimeZoneinterface and helper functions into a newzone.tsfile for better code organizationdate-and-time/timezoneentry point allowing import of multiple timezones from a single moduleformat()function now accepts IANA timezone name strings (e.g.,'Asia/Tokyo') in addition to TimeZone objectsChanges Included
1. Refactor: Separate TimeZone type definition into zone.ts
TimeZoneinterface and helper functions to newzone.tsfile2. Feat: Add consolidated timezone imports and IANA timezone name string support
timezone.tsfileformat()./timezoneexport topackage.json3. Refactor: Use nullish coalescing operator and improve code quality
formatter.ts4. Test: Add tests for new timezone features
5. Docs: Update documentation
6. Chore: Bump version to 4.2.0 and update dependencies