how to exclude few files/folder from using preserved cypress cookies

[mekalag]

I am trying to preserve cookies in index.js file :

Cypress.Cookies.defaults({
  preserve: ['session_id', 'remember_token'],
})

But I want to exclude few files such as login/authentication files from using the preserved cookies because I want to test real login here.

I see that cypress provides something like:

Cypress.Cookies.defaults({
  preserve: (cookie) => {
    // implement your own logic here
    // if the function returns truthy
    // then the cookie will not be cleared
    // before each test runs
  },
})

But I am not sure how to exclude a folder/files inside this.

Can someone help me with sample code ?