Remove empty dependencies field from package.json. Add JSDoc to
CalendarEngine.toGregorian clarifying null-return contract. Fix
documentation style in source comments and wiki (no em dashes).
Tighten test output format in test.mjs and test-cjs.cjs.
The index module registers built-in calendar engines at load time via
registerCalendar(). sideEffects:false was incorrect and could cause
bundlers to tree-shake those registration calls. Mark only the dist
entry points as having side effects so tree-shaking still works for
everything else.
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.
