dartNodeKindMap = toMapArray [(dartComment, tskComment),
                              (dartDocumentationComment, tskComment),
                              (dartFinalBuiltin, tskKeyword),
                              (dartTypeIdentifier, tskKeyword),
                              (dartIdentifier, tskIdent),
                              (dartPrefixOperator, tskPrefixOp),
                              (dartNegationOperator, tskPrefixOp)]

proc treeRepr(node: DartNode; base: string; withUnnamed: bool = false): string {...}{.
    raises: [Exception, NilArgumentError, ValueError, NoneArgumentError],
    tags: [RootEffect].}