Yog Script (.ys, .yns) analyzed: its lexer, parser and syntax tree, names resolved, the class index model — what the build and the editors read a source with.
namespace System.Meta;
/// A declaration as a macro sees it: its name, its word (`class`,
/// `struct`, `record`, `enum`), its fields, its text.
public record Item(string Name, string Kind, List<Field> Fields, string Source);