1 files changed, 7 insertions, 1 deletions
diff --git a/src/ast_defs.ml b/src/ast_defs.ml
index 0ce71618..f6b83c2c 100644
--- a/src/ast_defs.ml
+++ b/src/ast_defs.ml
@@ -50,4 +50,10 @@
 
 open Ast
 
-type 'a ast = Defs of 'a def list
+type 'a ast = {
+    defs : 'a def list
+  }
+
+let empty_ast = {
+    defs = []
+  }