@spec at_risk_subscriptions(
  map() | nil,
  keyword()
) :: [map()]

@spec funnel(
  map() | nil,
  keyword()
) :: %{
  entered: non_neg_integer(),
  recovered: non_neg_integer(),
  exhausted: non_neg_integer(),
  active: non_neg_integer()
}

@spec recovered_vs_lost_mrr(
  map() | nil,
  keyword()
) :: %{
  recovered: [%{currency: String.t(), cents: non_neg_integer()}],
  lost: [%{currency: String.t(), cents: non_neg_integer()}]
}