/** performs field extraction from the fields of a form */
export const extract_form = (form, opts = {}) => {
    let { names = undefined, values = {} } = opts
    let nameList = names || Object.values(form.elements).filter(it => it.name).map(it => it.name)
    return nameList.reduce((out, name) => {
        let input = form[name]
        out[name] = (input.type === 'checkbox' || input.type === "radio") ? input.checked : input.value
        return out
    }, {...values})
}