How to terminate earlier a MongoDb shell script?

Question

Writing:

if (...) {
    return;
}

in a MongoDb shell script will complain: SyntaxError: return not in function

I have also tried the exit mongo console command:

if (...) {
    exit;
}

but you get the error: ReferenceError: exit is not defined

How can one earlier terminate the execution in the js script file?

Answer 1

In mongodb you can use the quit() function as documented here. While it's not documented well, I did a quick test and can return a non zero exit code by doing quit(1) which will exit w/ status 1.

Answer 2

I have used the following solution:

(function(){

    // now you can use the return keyword anywhere:
    if (/* some condition */) {
        print("This is an error condition");
        return;
    }

})();

I know that terminating the script this way will not make mongo return an error code different than 0 (as the accepted solution does).