Function declaration of getEmailMessage in serverless contact form

ContactFormLambda.js

function getEmailMessage (emailObj) {
    var emailRequestParams = {
        Destination: {
          ToAddresses: [ sesConfirmedAddress ]  
        },
        Message: {
            Body: {
                Text: {
                    Data: emailObj.message
                }
            },
            Subject: {
                Data: emailObj.subject
            }
        },
        Source: sesConfirmedAddress,
        ReplyToAddresses: [ emailObj.email ]
    };
    
    return emailRequestParams;
}