# Road Compiler

Compiles a `native-road-package/v1` `RoadCompilerInput` JSON file into native-road GeoJSON, diagnostics, traffic-signal runtime assets, and a deterministic completion marker.

```bash
npx road-compiler --input /absolute/path/road-compiler.input.json
```

The compiler does not read host area configuration. The caller owns configuration normalization and creates the input JSON. Successful compilation writes exactly one `NATIVE_ROAD_COMPILE_DONE` JSON marker to stdout.

Run `npm test` after `npm ci` to validate the package and its two self-contained area fixtures without the host repository. The migrated baselines remain upgrade corpus; the host repository owns the strict path-normalized parity gate.