Why does cy request with form true with multiple values for a single key results in a wrong url? And what is the workaround?

[wieben]

I have a request similar to:

cy.request({
  method: 'POST',
  url: '/some/url',
  form: true,
  body: {user: ['first', 'second']},
})

Which results in url:
/some/url?user%5B0%5D=first&user%5B1%5D=second

Which decodes to:
/some/url?user[0]=first&user[1]=second

But what I want is:
/some/url?user=first&user=second

Is there a workaround for getting the desired request?

Do we need to not submit the form url encoded and do the encoding with a library and add it to the url?

There is a similar open issue for requests with querystring instead of form #17921

EDIT 1: the real request is quite a bit more complex hence the form url encoding is needed

[wieben]

Answer to my own question with workaround for whoever ends up here:

import formurlencoded from 'form-urlencoded'

const myform = {user: ['first', 'second']}

const formurl = formurlencoded(myform, {
  skipIndex: true,
  skipBracket: true,
  whitespace: '%20',
})

cy.request({
  method: 'POST',
  url: '/some/url',
  form: true,
  body: formurl,
})

So what would help is if options like { skipIndex: true, skipBracket: true, whitespace: '%20',} are available to cypress as well.