Module support

Functions

• count_local_id_uses 🔒
  Populates counts with the number of uses of each local identifier in expr.
• for_local_id 🔒
  Logic mapped across each use of a LocalId.
• map_to_3vecs 🔒
• refresh_types 🔒
  Visit LetRec stages and determine and update type information for Get nodes.
• replace_bindings_from_map 🔒