1 files changed, 16 insertions, 0 deletions

diff --git a/subprojects/language/src/main/java/tools/refinery/language/typesystem/InvalidType.java b/subprojects/language/src/main/java/tools/refinery/language/typesystem/InvalidType.java
new file mode 100644
index 00000000..c18612bc
--- /dev/null
+++ b/subprojects/language/src/main/java/tools/refinery/language/typesystem/InvalidType.java
@@ -0,0 +1,16 @@
+/*
+ * SPDX-FileCopyrightText: 2024 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+package tools.refinery.language.typesystem;
+
+public final class InvalidType implements FixedType {
+        InvalidType() {
+        }
+
+        @Override
+        public String toString() {
+                return "invalid";
+        }
+}