Is there a memory leak in the nodejs code [closed]

I am looking for a memory leak in my nodejs application.

I have a suspect in the below code

const CRON_SCHEDULE = '*/15 * * * * *';


function myFunction() {
const  someBigString = "";   // This will cause an error (y is not defined)
}

function scehdule() {
return schedule(
            validate(CRON_SCHEDULE,
            () => this.myFunction()
        ));
}

I have a code called schedule which is called on the initialisation of the app which uses node-cron library to schedule a job every 15 mins which calls my function which has a fairly big string.

As i understand the string (someBigStrig) is in function/local scope so it should garbage collected.