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https://github.com/acamarata/solar-spa.git
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fb0c14e761
Complete rewrite of the package from plain JavaScript to TypeScript, compiled to dual CJS/ESM via tsup. The NREL SPA C source is recompiled to WASM with Emscripten using SINGLE_FILE base64 inlining, eliminating bundler path-resolution issues. Changes: - Rewrite JS wrapper in TypeScript with full type definitions - Recompile WASM with -O3 -flto, 1MB fixed memory, no filesystem - Add input validation with descriptive error messages - Add spaFormatted() for HH:MM:SS time strings - Add formatTime() utility and init() for eager WASM loading - Add SPA_ZA, SPA_ZA_INC, SPA_ZA_RTS, SPA_ALL function code exports - Dual CJS/ESM output via tsup with proper exports map - Test suite: 68 ESM + 13 CJS assertions - 100-scenario validation suite across 7 categories - GitHub Wiki with 8 documentation pages - CI workflow: Node 20/22/24 matrix, typecheck, pack-check - NREL attribution in LICENSE and README per their license terms - Minimum Node.js 20
94 lines
5 KiB
Markdown
94 lines
5 KiB
Markdown
# Changelog
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## 2.0.0
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Complete rewrite. The source is now TypeScript, compiled by tsup to dual CJS/ESM with generated declarations. The WASM binary and build pipeline are all new.
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### Breaking Changes
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- The default export is now an async function named `spa()` with a different signature. The old `spa(date, lat, lon, elev, temp, pressure, refraction)` positional API is replaced by `spa(date, lat, lon, options)` where options is an object.
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- Return field `solar_noon` is now `suntransit` (matches the NREL SPA spec naming).
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- Return field `azimuth` is now the navigational azimuth (eastward from north). The astronomical convention (westward from south) is available as `azimuth_astro`.
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- New return fields: `azimuth_astro`, `eot`, `error_code`.
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- Non-zero SPA error codes now throw an `Error` instead of returning silently.
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- Invalid inputs (non-Date, non-finite coordinates, out-of-range values) now throw `TypeError` or `RangeError` before reaching the WASM layer.
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- CJS entry point moved from `./solar-spa.js` to `./dist/index.cjs`.
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- Minimum Node.js version is now 20.
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### Added
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- TypeScript source (`src/index.ts`, `src/types.ts`) with full type safety.
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- Dual CJS/ESM output via tsup: `dist/index.cjs` and `dist/index.mjs`.
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- Generated TypeScript declarations for both formats: `dist/index.d.ts` (CJS) and `dist/index.d.mts` (ESM).
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- Input validation with descriptive `TypeError` and `RangeError` messages.
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- `spaFormatted()` function that returns sunrise, sunset, and transit as `HH:MM:SS` strings. Returns `"N/A"` during polar day or polar night.
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- `formatTime()` utility for converting fractional hours to time strings. Handles negative values and 24-hour overflow.
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- `init()` function for optional eager WASM initialization. Retries on failure instead of caching a rejected promise.
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- SPA function code constants (`SPA_ZA`, `SPA_ZA_INC`, `SPA_ZA_RTS`, `SPA_ALL`) exported as `const` types.
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- `SpaFunctionCode` union type for the function option.
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- Options object with named parameters: `timezone`, `elevation`, `pressure`, `temperature`, `delta_ut1`, `delta_t`, `slope`, `azm_rotation`, `atmos_refract`, `function`.
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- Automatic timezone detection from the `Date` object when `timezone` is omitted.
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- Named `OFFSET` constant for WASM struct byte offsets (replaces magic numbers).
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- Test suite with 68 ESM assertions and 13 CJS assertions covering multiple locations, seasons, input validation, concurrent calls, boundary coordinates, polar regions, all function codes, and `formatTime` edge cases.
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- 100-scenario validation suite (`validate.mjs`) covering 20 cities worldwide, boundary conditions, polar regions, time edge cases, all function codes, atmospheric variations, and historical dates from 2000 BCE to 6000 CE. Includes throughput benchmarks.
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- GitHub Actions CI workflow (Node 20/22/24 matrix with type checking).
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### Fixed
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- `onRuntimeInitialized` race condition that caused the module to break after the first call. The v1 wrapper re-assigned the one-shot callback on every invocation, so only the first call ever resolved.
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- WASM file path resolution failures in Webpack, Vite, and Next.js. The binary is now inlined as base64 via Emscripten's `SINGLE_FILE` flag, so there is no `.wasm` file to resolve at runtime.
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- `cwrap` bindings are now created once during initialization, not on every call.
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- Global `Module` object pollution. The Emscripten output is now modularized (`MODULARIZE=1`) and returns a factory function instead of mutating a global.
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- `formatTime()` now returns `"N/A"` for negative values and wraps correctly at 24 hours.
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- `init()` clears the pending promise on failure, allowing retry on subsequent calls.
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### Changed
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- Source rewritten in TypeScript, compiled by tsup to CJS + ESM with source maps.
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- Recompiled WASM with Emscripten using `-O3 -flto`, `SINGLE_FILE`, `MODULARIZE`, `NO_FILESYSTEM`, and fixed 1MB memory. Output is ~60KB.
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- C wrapper (`spa_wrapper.c`) extended to accept all SPA input parameters and return all output fields.
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- Package exports map uses `types`-first ordering per TypeScript documentation.
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- `sideEffects: false` declared for tree-shaking support.
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### Removed
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- `solar-spa.js` (old entry point).
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- `lib/solar-spa.cjs` and `lib/solar-spa.mjs` (replaced by `dist/index.cjs` and `dist/index.mjs`).
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- `index.d.ts` (hand-written declarations replaced by generated output in `dist/`).
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- `spa.js` and `spa.wasm` (old Emscripten output, replaced by `wasm/spa-module.js`).
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- `.npmignore` (replaced by the `files` field in `package.json`).
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## 1.2.5
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- Updated package.json repository field for npm listing.
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- Updated README.
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## 1.2.4
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- Reverted bug fix from 1.2.1 that introduced a regression.
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## 1.2.3
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- Bug fix for `onRuntimeInitialized` callback timing.
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## 1.2.2
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- Rebuilt WASM targeting both web and Node.js environments.
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- Removed dependency on `fs` module.
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## 1.2.1
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- Bug fix (reverted in 1.2.4).
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## 1.2.0
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- Directly linked WASM file to resolve path resolution bug.
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## 1.1.0
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- Added TypeScript declaration file.
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- Added explicit WASM file path.
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## 1.0.0
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- Initial release. NREL SPA compiled to WebAssembly with a JavaScript wrapper.
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