module Tapioca::RBIFilesHelper

def duplicated_nodes_from_index(index, shim_rbi_dir:, todo_rbi_file:)

: (RBI::Index index, shim_rbi_dir: String, todo_rbi_file: String) -> Hash[String, Array[RBI::Node]] 
def duplicated_nodes_from_index(index, shim_rbi_dir:, todo_rbi_file:)
  duplicates = {}
  say("Looking for duplicates... ")
  time = Benchmark.realtime do
    index.keys.each do |key|
      nodes = index[key]
      next unless shims_or_todos_have_duplicates?(nodes, shim_rbi_dir: shim_rbi_dir, todo_rbi_file: todo_rbi_file)
      duplicates[key] = nodes
    end
  end
  say(" Done ", :green)
  say("(#{time.round(2)}s)")
  duplicates
end