package-import-method=hardlink is pnpm's default since v7 and does not
need to be set explicitly. npm reads .npmrc and warns about unknown
project config keys — removing it silences the warning with no effect
on pnpm behavior.
Complete modernization of the package. The core SPA algorithm is
unchanged and validated; everything else is rebuilt to match current
JavaScript ecosystem standards.
Changes:
- TypeScript wrapper in src/ with full type definitions
- Dual CJS/ESM build via tsup (dist/index.cjs, dist/index.mjs)
- Core algorithm moved from dist/spa.js to lib/spa.js (same code)
- Input validation with descriptive TypeError/RangeError messages
- formatTime() and SPA function code constants as named exports
- getSpa() / calcSpa() accept null for optional args (tz, options)
- Test suite: 61 ESM assertions and 17 CJS assertions
- GitHub Actions CI: Node 20/22/24 matrix, typecheck, pack-check
- GitHub Wiki: Home, API Reference, Architecture, Twilight, NREL SPA
- NREL attribution in LICENSE and README per their license terms
- package.json: exports map, files, engines >=20, sideEffects: false
- Author corrected to Aric Camarata; repository.url uses git+https://
- LICENSE year corrected to 2023-2026
- Removed: index.js, test.js, dist/spa.js (superseded by above)
