recursive_fieldget.js

function getFields(form) {
    if (typeof form !== "object") {
        return [];
    } else {
        if (form.formType === "formField") {
            // end case, object is a simple field
            return [{htmlName: form.htmlName, value: form.value}];
        } else if (form.formType === "formGroup") {
            // recursion: check every entry of the formGroup
            return Object.entries(form)
                .filter(([key, value]) => typeof value === "object")
                .flatMap(([key, value]) => getFields(value));
        } else {
            // probably not necessary, depending on other options for formType
            return [];
        }

    }
}