1 files changed, 5 insertions, 0 deletions
diff --git a/lib/ast.js b/lib/ast.js
index 55e95033..39a62b16 100644
--- a/lib/ast.js
+++ b/lib/ast.js
@@ -661,6 +661,11 @@ var AST_Null = DEFNODE("Null", null, {
     value: null
 }, AST_Atom);
 
+var AST_NaN = DEFNODE("NaN", null, {
+    $documentation: "The impossible value",
+    value: 0/0
+}, AST_Atom);
+
 var AST_Undefined = DEFNODE("Undefined", null, {
     $documentation: "The `undefined` value",
     value: (function(){}())