Every value in the AST is a tomledit.Node, which provides a uniform interface for accessing the node's type, semantic value, comments, raw bytes, and source span. The concrete types cover all TOML value kinds plus the structural container types for tables, arrays, and array-of-tables headers. Source
The document root
The document root is a DocumentNode whose Children slice contains the top-level entries: KeyValueNode, TableNode, ArrayTableNode, and CommentNode. Each node type carries its own trivia and raw bytes, and specialized fields capture TOML-specific semantics such as key quoting styles, integer bases, string styles, and array trailing comments. Source