diff --git a/scripts/circleci/test_build.sh b/scripts/circleci/test_build.sh
new file mode 100644
index 0000000000..45f53872a0
--- /dev/null
+++ b/scripts/circleci/test_build.sh
@@ -0,0 +1,10 @@
+-#!/bin/bash		
+ -		
+ -set -e		
+ -		
+ -npm run build -- --extractErrors
+ -git checkout -- scripts/error-codes/codes.json		
+ -		
+ -WARNINGS=$(node scripts/error-codes/print-warnings.js)		
+ -echo "$WARNINGS"		
+ -test ! -z "$WARNINGS"
\ No newline at end of file
diff --git a/scripts/circleci/test_entry_point.sh b/scripts/circleci/test_entry_point.sh
index 1622c755fd..800cf561c6 100755
--- a/scripts/circleci/test_entry_point.sh
+++ b/scripts/circleci/test_entry_point.sh
@@ -29,7 +29,7 @@ if [ $((0 % CIRCLE_NODE_TOTAL)) -eq "$CIRCLE_NODE_INDEX" ]; then
   COMMANDS_TO_RUN+=('node ./scripts/tasks/eslint')
   COMMANDS_TO_RUN+=('node ./scripts/prettier/index')
   COMMANDS_TO_RUN+=('node ./scripts/tasks/flow')
-  COMMANDS_TO_RUN+=('npm run build -- --extractErrors')
+  COMMANDS_TO_RUN+=('./scripts/circleci/test_build.sh')
   COMMANDS_TO_RUN+=('./scripts/circleci/track_stats.sh')
 fi