fix(connectivity_check): use explicit index.js imports for ES modules

ES modules don't support directory imports. Must explicitly specify
index.js when importing from @racker/janus-core subdirectories.

Fixes: Directory import '/var/task/node_modules/@racker/janus-core/lib/stats'
is not supported resolving ES modules

JIRA: PLATEXP-11106

Author: sai-praveen-os

modules/connectivity_check/lambda/tsconfig.json

@@ -9,7 +9,7 @@
     "esModuleInterop": true,
     "skipLibCheck": true,
     "forceConsistentCasingInFileNames": true,
-    "moduleResolution": "node",
+    "moduleResolution": "bundler",
     "resolveJsonModule": true
   },
   "include": ["index.ts"],

modules/connectivity_check/scripts/build-lambda.sh

@@ -30,6 +30,11 @@ npm install --no-package-lock
 echo "Compiling TypeScript..."
 npx tsc
 
+# Fix ES module imports - add /index.js to janus-core subpath imports
+echo "Fixing ES module imports..."
+sed -i "s|from '@racker/janus-core/lib/stats'|from '@racker/janus-core/lib/stats/index.js'|g" index.js
+sed -i "s|from '@racker/janus-core/lib/log'|from '@racker/janus-core/lib/log/index.js'|g" index.js
+
 # Remove TypeScript source and dev dependencies
 rm -f index.ts tsconfig.json
 npm prune --production