Delete empty params on form submit

1

Hi, I’v got a form with turbo-frame param and frame has data: { turbo_action: ‘advance’ }, because I want to update the url to have form params (filters) there.
I need to delete some form fields on form submit, especially empty params like foo=‘’ or bar=[‘’] etc . Is it possible to do this for example in callback in stimulus controller like?

    this.element.addEventListener('turbo:submit-start', (event) => {

Basically

2 
this.element.addEventListener('turbo:submit-start', (event) => {
  const emptyParams = []
  for (const entry of event.detail.formSubmission.body.entries()) {
    if (entry[1] == "") {
      emptyParams.push(entry[0]);
    }
  }
  for (const key of emptyParams) {
    event.detail.formSubmission.body.delete(key);
  }
})