- Extract magic numbers into named constants (DHUHR_OFFSET_MINUTES,
ANGLE_MIN/MAX, LAT_SCALE) with source citations for MCW coefficients
- Add input validation (RangeError) for lat, lng, tz, elevation on all
public API functions (getTimes, getTimesAll)
- Optimize solar ephemeris: computeAngles() returns declination so
getTimes/getTimesAll reuse it for Asr instead of computing twice
- DRY: shared constants.ts for DEG, Dhuhr offset, angle bounds
- Improve MethodEntry type with labeled tuple elements and NaN docs
- Add stricter tsconfig (noImplicitReturns, noFallthroughCasesInSwitch)
- Switch tests to node:test framework (TAP output, describe/it blocks)
- Add 8 new input validation tests (104 ESM + 13 CJS total)
- Add ESLint + Prettier with CI lint job
- Remove src/ from npm package files (smaller published tarball)
- Document NaN return behavior in JSDoc for getTimes/getTimesAll
The test called getTimes without an explicit tz, so it fell back to
-date.getTimezoneOffset()/60. On the developer machine (EDT = UTC-4)
this worked; on CI (Ubuntu, UTC = 0) NY's Maghrib crossed midnight,
returning ~0.51h instead of ~24.5h, which sorted before Asr (~21h).
Add tz=-4 explicitly. All section-8 geographic tests already do this;
the chronological test was the only one missing it.
