How to get the line number of an error when executing code in the sandbox?

[IamSanjid]

const sandbox = new Sandbox();

const code = `function onStart() {
    console.log(some_undefined_var);
}
return { onStart: onStart };
`;

const exec = sandbox.compile(code);
const script_context = exec({}).run();

// here an error should occur...
script_context['onStart']();

So I would like to know at which line(maybe?) the error occurred while executing the code in the provided coding string, I think I can get the function name in a way but need some examples of how to approach this.

[nyariv]

The sandbox currently does not keep track of stack trace, so it provides a code snippet where the issue is.

[IamSanjid]

The sandbox currently does not keep track of stack trace, so it provides a code snippet where the issue is.

How can I retrieve that code snippet? Normal try-catch doesn't seem to be helping any example would be helpful.