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https://github.com/acamarata/hijri-core.git
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34193780f3
Bug: uaqToHijri read local date components (getFullYear/getMonth/getDate) and passed them to Date.UTC(), producing a UTC midnight that does not match the input's intended Gregorian day on hosts west of UTC. Concretely, a Date returned by toGregorian() (UTC midnight) would map to the *previous* Hijri day on UTC-5 or UTC-13 hosts, breaking the toHijri(toGregorian(hy,hm,hd)) round-trip. Fix: switch line 44 to read UTC components (getUTCFullYear/getUTCMonth/ getUTCDate), matching how the FCNA engine already worked. Both engines now share the same UTC-day contract: toHijri reads the UTC calendar day of the input, and toGregorian returns a UTC-midnight Date. Round-trips are exact; results are host-timezone-independent. Behavior change: on non-UTC hosts, toHijri results may shift to the UTC calendar day rather than the local calendar day. Users passing local wall-clock dates should use new Date(Date.UTC(y, m-1, d)). Also: - Fix misleading comment in uaqToHijri (previously claimed local components were "timezone-safe") - Add UTC-day contract to toHijri JSDoc in src/index.ts - Fix wrong constraint comment in hijri-core.test.ts header - Add "day boundaries (UTC contract)" describe block to vitest suite - Convert LOCAL Date constructors in test.mjs and test-cjs.cjs to Date.UTC() form; add UAQ round-trip assertion to test.mjs - Add "Day boundaries and time zones" section to README.md - Add [Unreleased] Fixed entry to CHANGELOG.md
29 lines
1.3 KiB
Markdown
29 lines
1.3 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 is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
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and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
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## [Unreleased]
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### Fixed
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- UAQ engine `toHijri` was reading local date components (`getFullYear/getMonth/getDate`) instead of UTC components, causing incorrect results on hosts west of UTC (e.g. `America/New_York`, `Pacific/Auckland`) when the input Date was a UTC-midnight value such as those returned by `toGregorian` or ISO date-only strings. `toHijri` now reads UTC calendar day components (`getUTCFullYear/getUTCMonth/getUTCDate`), matching the FCNA engine. **Behavior change:** on non-UTC hosts the converted Hijri day may shift to the UTC calendar day; round-trips via `toGregorian` are now exact on every machine.
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## [1.0.2] - 2026-05-30
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### Changed
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- Apply TypeScript strict null-check fixes in uaq.ts and fcna.ts (non-null assertions compile away; no behavior change)
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## [1.0.1] - 2026-05-28
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### Changed
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- Flatten exports map to ADR-015 standard (import/require/types at top level)
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- Add "./package.json" export condition
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- Add coverage script (c8 --reporter=lcov)
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- Migrate CI from pnpm/action-setup to corepack enable
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## [1.0.0] - 2026-05-28
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### Added
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- Initial release
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