feat: add native road compiler provider

scripts/test-asset-budgets.js

@@ -11,9 +11,12 @@ const { digestGltf } = require("./glb-digest");
 const { evaluateGlbBudget, BUDGETS, fileRecord, writeStageManifest } = require("./lib/stage-manifest");
 
 const qgisBuildSource = fs.readFileSync(path.join(__dirname, "build-osm2streets-qgis.js"), "utf8");
+const areaBuildSource = fs.readFileSync(path.join(__dirname, "build-area.js"), "utf8");
 assert.match(qgisBuildSource, /QgsFieldConstraints\.Constraint\.ConstraintNotNull/);
 assert.match(qgisBuildSource, /QgsFieldConstraints\.ConstraintNotNull/);
 assert.doesNotMatch(qgisBuildSource, /setFieldConstraint\(index, 1\)/);
+assert.match(areaBuildSource, /exportCesium\(area, roadProvider\)/);
+assert.match(areaBuildSource, /if \(roadProvider === "osm2streets"\) \{\n    exporterArgs\.splice/);
 
 const gltf = {
   nodes: [
@@ -51,6 +54,12 @@ assert.equal(
   path.join(tempDir, "test-area", "osm2streets_web_out", "traffic_signal_assemblies.geojson"),
 );
 assert.equal(normalizeAreaConfig({ ...base, budget: { nodes: 800 } }).budget.glbNodes, 800);
+assert.equal(normalizeAreaConfig(base).blender.roadProvider, "osm2streets");
+assert.equal(normalizeAreaConfig({ ...base, blender: { roadProvider: "native" } }).blender.roadProvider, "native");
+assert.throws(
+  () => normalizeAreaConfig({ ...base, blender: { roadProvider: "other" } }),
+  /blender\.roadProvider/,
+);
 assert.throws(
   () => normalizeAreaConfig({ ...base, budget: { nodes: 1200 } }),
   /budget.reason is required/,