Transcong.paren: def of bolt@1.27.0.0
Import: import bolt@1.27.0.0/src/rules/style/transcong.bend as Transcong
Lines 43-49 of bolt@1.27.0.0/src/rules/style/transcong.bend: https://jend.leeeet.dev/read.txt?path=bolt@1.27.0.0/src/rules/style/transcong.bend&start_line=43&end_line=49

import Base
import bolt@1.27.0.0/src/syntax/lex.bend as Lex
import bolt@1.27.0.0/src/syntax/tree.bend as Tree

# is the node a group opened by `(`?
def paren(nn: Tree.Node) -> Bool:
  match nn:
    case Tree.Group{Lex.Tok{_k, o, _l, _c}, _kids, _cl}:
      String.eq(o, "(")
    case _other:
      False{}

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String.eq
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/syntax/lex.bend&name=Tok
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/syntax/tree.bend&name=Node