...

src/compiler/Nub.Lang/Program.cs

@@ -69,7 +69,7 @@ internal static class Program
         foreach (var filePath in filePaths)
         {
             var src = File.ReadAllText(filePath);
-            tokens.AddRange(Lexer.Lex(src, filePath));
+            tokens.AddRange(Lexer.Lex(src, new SourceFile(filePath, src)));
         }
 
         var module = Parser.ParseModule(tokens, rootFilePath);