fix d.ts in wrong place

Viewer/tests/unit/tsconfig.json

@@ -20,7 +20,7 @@
         "skipDefaultLibCheck": true,
         "skipLibCheck": true,
         "baseUrl": "./src/",
-        "rootDir": "./",
+        "rootDir": "../../",
         "paths": {
             "babylonjs": [
                 "../../../../dist/preview release/babylon.d.ts"
@@ -35,6 +35,7 @@
                 "../../src/assets/"
             ]
         },
+        "outDir": "./build"
     },
     "include": [
         "./src/**/*.ts"