fix: exclude output files

tsserver misbehaved because output files were also handled by the LSP.
This CL fixes this issue by excluding the output files.

Change-Id: Ia685b2540682d2d221bb708b632615dba381ebd4
diff --git a/tsconfig.json b/tsconfig.json
index ae31377..8a9d6e5 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -14,5 +14,6 @@
     "compilerOptions": {
       "module": "commonjs"
     }
-  }
+  },
+  "exclude": ["node_modules", "dist"]
 }