--- /dev/null
+<?php
+
+namespace Wikimedia\Assert;
+
+use LogicException;
+
+/**
+ * Exception indicating that an invariant assertion failed.
+ * This generally means an error in the internal logic of a function, or a serious problem
+ * in the runtime environment.
+ *
+ * @license MIT
+ * @author Daniel Kinzler
+ * @copyright Wikimedia Deutschland e.V.
+ */
+class InvariantException extends LogicException implements AssertionException {
+
+}