...

compiler/ModuleGraph.cs

@@ -210,6 +210,7 @@ public class ModuleGraph
                     NodeTypeSInt type => NubTypeSInt.Get(type.Width),
                     NodeTypeUInt type => NubTypeUInt.Get(type.Width),
                     NodeTypeString => NubTypeString.Instance,
+                    NodeTypeChar => NubTypeChar.Instance,
                     NodeTypeVoid => NubTypeVoid.Instance,
                     NodeTypeArray type => NubTypeArray.Get(ResolveType(type.ElementType, currentModule)),
                     _ => throw new ArgumentOutOfRangeException(nameof(node))
@@ -442,4 +443,4 @@ public class Module(string name)
             public NubType? Type { get; } = type;
         }
     }
-}
+}