(compactTreePrinter: StringAdd).self
(compactTreePrinter: StringFormat).self
(compactTreePrinter: ArrowAssoc[CompactTreePrinter]).x
(Since version 2.10.0) Use leftOfArrow instead
(compactTreePrinter: Ensuring[CompactTreePrinter]).x
(Since version 2.10.0) Use resultOfEnsuring instead
A tree printer which is stingier about vertical whitespace and unnecessary punctuation than the standard one.