pub fn apply_datom(
  state: state.DbState,
  d: fact.Datom,
  tx_idx_counter: Int,
) -> #(state.DbState, List(fact.Datom), Int)

pub fn resolve_transaction_functions(
  state: state.DbState,
  tx_id: Int,
  vt: Int,
  facts: List(#(fact.Eid, String, fact.Value)),
) -> List(#(fact.Eid, String, fact.Value))

pub fn update_indices(
  state: state.DbState,
  d: fact.Datom,
) -> state.DbState