exclude ./lib/sentinel/test-util.ts from build

Author: leibale

packages/client/tsconfig.json

@@ -9,7 +9,8 @@
   ],
   "exclude": [
     "./lib/test-utils.ts",
-    "./lib/**/*.spec.ts"
+    "./lib/**/*.spec.ts",
+    "./lib/sentinel/test-util.ts"
   ],
   "typedocOptions": {
     "entryPoints": [