class Tapioca::Commands::AbstractGem

def merge_with_exported_rbi(gem, file)
  return file unless gem.export_rbi_files?
  tree = gem.exported_rbi_tree
  unless tree.conflicts.empty?
    say_error("\n\n  RBIs exported by `#{gem.name}` contain conflicts and can't be used:", :yellow)
    tree.conflicts.each do |conflict|
      say_error("\n    #{conflict}", :yellow)
      say_error("    Found at:", :yellow)
      say_error("      #{conflict.left.loc}", :yellow)
      say_error("      #{conflict.right.loc}", :yellow)
    end
    return file
  end
  file.root = RBI::Rewriters::Merge.merge_trees(file.root, tree, keep: RBI::Rewriters::Merge::Keep::LEFT)
rescue RBI::ParseError => e
  say_error("\n\n  RBIs exported by `#{gem.name}` contain errors and can't be used:", :yellow)
  say_error("Cause: #{e.message} (#{e.location})")
end