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bb326d071c
Zero-dependency Hijri calendar engine with pluggable calendar registry. Built-in Umm al-Qura (UAQ) and FCNA/ISNA calendar engines. Supports N additional calendars via registerCalendar(). Pure Date.UTC arithmetic, binary search on 184-entry UAQ table, Meeus Ch.49 new moon formula for FCNA. 39 ESM + 20 CJS tests passing. Dual CJS/ESM build with full TypeScript declarations.
25 lines
1.2 KiB
Markdown
25 lines
1.2 KiB
Markdown
# Changelog
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All notable changes to this project will be documented in this file.
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The format follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
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## [1.0.0] - 2026-02-25
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### Added
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- UAQ (Umm al-Qura) calendar engine with binary search over a 184-year reference table (1318-1500 H / 1900-2076 CE)
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- FCNA/ISNA calendar engine based on Jean Meeus Chapter 49 new moon algorithm with the FCNA conjunction criterion
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- Calendar registry (`registerCalendar`, `getCalendar`, `listCalendars`) for pluggable calendar support
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- `toHijri(date, options?)` convenience wrapper
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- `toGregorian(hy, hm, hd, options?)` convenience wrapper
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- `isValidHijriDate(hy, hm, hd, options?)` validation function
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- `daysInHijriMonth(hy, hm, options?)` month-length function
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- `hDatesTable` export of the full Umm al-Qura data
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- `hmLong`, `hmMedium`, `hmShort` Hijri month name arrays
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- `hwLong`, `hwShort`, `hwNumeric` Hijri weekday name arrays
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- Full TypeScript type declarations for all exports
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- Dual CJS and ESM build (tsup)
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- `CalendarEngine` interface for writing custom calendar implementations
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- Node 20/22/24 CI matrix
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- GitHub Wiki with API reference and architecture documentation
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