Does the helmfile affect the whole cluster or the resources in the terraform state only?

[Mostafa-wael]

I want to know what happens when using something like this in an old cluster:

terraform {
  required_providers {
    helmfile = {
      source = "mumoshu/helmfile"
      version = "VERSION"
    }
  }
}

Does, it affect the entire cluster and move it to the desired state stated in the helmfile, or just affect the desired state of the resources made by terraform and found in terraform state?