Form submit in Typescript

form-submit.ts

type TFormSubmitOptions = {
  body?: { [key: string]: any };
  method?: string;
};

const formSubmit = (endpoint: string, options?: TFormSubmitOptions) => {
  const { body = {}, method = 'POST' } = options || {};

  const form = document.createElement('form');
  form.setAttribute('method', method);
  form.setAttribute('action', endpoint);

  Object.keys(body).forEach((name) => {
    const hiddenField = document.createElement('input');
    hiddenField.setAttribute('type', 'hidden');
    hiddenField.setAttribute('name', name);
    hiddenField.setAttribute('value', body[name]);
    form.appendChild(hiddenField);
  });

  document.body.appendChild(form);
  form.submit();
  return;
};

formSubmit('/download/file');