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.Collections.Generic;
/// An order of `T`s: less than zero when `x` goes before `y`, zero when
/// they're level, more after.
[Intrinsic]
public interface IComparer<in T> {
i32 Compare(T x, T y);
}