tsconfig: actually, remove `excludes` entirely (the default is good)

tsconfig.json

@@ -14,6 +14,5 @@
     "experimentalDecorators": true,
     "esModuleInterop": true,
     "typeRoots": [ "./types", "./node_modules/@types"]
-  },
-  "exclude": ["node_modules", "types"]
+  }
 }