Import inside ./routes.js file caused that some console.log commands stopped to output data at gcloud functions. Like console.log(Object), console.log(Array), console.log(JSON.stringify(Object, null, ' ' )) etc

You need to have Google Cloud SDK istalled Intall instruction page for OSX

then gcloud init

yarn deploy

Open https://europe-west1-esm-test-233714.cloudfunctions.net/esm-log

yarn logs

Logs are not updated immediately and you need to wait usually 20-60sec

I havent found a way how to prevent cloud function to override node_modules folder so I placed esm folder from node_modules in sources and require it via relative path

Now in logs is

Function execution started
HELLO
Function execution took 40 ms, finished with status code: 200

Must be

Function execution started
HELLO
{ a: 1 }
{
 "a": 1
}
[ 1 ]
Function execution took 15 ms, finished with status code: 200