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-rw-r--r--tvix/eval/src/builtins/mod.rs3
1 files changed, 3 insertions, 0 deletions
diff --git a/tvix/eval/src/builtins/mod.rs b/tvix/eval/src/builtins/mod.rs
index 594263edb468..ce048e22be0d 100644
--- a/tvix/eval/src/builtins/mod.rs
+++ b/tvix/eval/src/builtins/mod.rs
@@ -60,6 +60,9 @@ fn pure_builtins() -> Vec<Builtin> {
             // TODO: toString is actually not the same as Display
             Ok(Value::String(format!("{}", args[0]).into()))
         }),
+        Builtin::new("typeOf", 1, |args| {
+            Ok(Value::String(args[0].type_of().into()))
+        }),
     ]
 }