Google Tags dataLayer event code for contact form

Question
1

Does anyone have the javascript to add the contact details into the dataLayer so it can be reported properly as an event by Google Tags?

Here is a wordpress form example:

document.addEventListener('wpforms.submit', function(event) {
    if (event.target.id === 'wpforms-18') { 
        var formData = new FormData(event.target);
        window.dataLayer = window.dataLayer || [];
        window.dataLayer.push({
            'event': 'wpformsFormSubmit',
            'formData': {
                'name': formData.get('wpforms-18-field_0'),
                'phone': formData.get('wpforms-18-field_4'),
                'email': formData.get('wpforms-18-field_1')
            }
        });
    }
});