1 files changed, 37 insertions, 1 deletions
diff --git a/stdlib/source/lux/meta/type/check.lux b/stdlib/source/lux/meta/type/check.lux
index 74c5a2a90..91e8f3bdf 100644
--- a/stdlib/source/lux/meta/type/check.lux
+++ b/stdlib/source/lux/meta/type/check.lux
@@ -17,7 +17,6 @@
 (exception: #export Unknown-Type-Var)
 (exception: #export Unbound-Type-Var)
 (exception: #export Improper-Ring)
-(exception: #export Cannot-Clean-Unbound-Var)
 (exception: #export Invalid-Type-Application)
 (exception: #export Cannot-Rebind-Var)
 (exception: #export Type-Check-Failed)
@@ -628,3 +627,40 @@
   (Check Type-Context)
   (function [context]
     (#e;Success [context context])))
+
+(def: #export (clean inputT)
+  (-> Type (Check Type))
+  (case inputT
+    (#;Primitive name paramsT+)
+    (do Monad<Check>
+      [paramsT+' (monad;map @ clean paramsT+)]
+      (wrap (#;Primitive name paramsT+')))
+
+    (^or #;Void #;Unit (#;Bound _) (#;Ex _) (#;Named _))
+    (:: Monad<Check> wrap inputT)
+
+    (^template [<tag>]
+      (<tag> leftT rightT)
+      (do Monad<Check>
+        [leftT' (clean leftT)
+         rightT' (clean rightT)]
+        (wrap (<tag> leftT' rightT'))))
+    ([#;Sum] [#;Product] [#;Function] [#;Apply])
+
+    (#;Var id)
+    (do Monad<Check>
+      [?actualT (read id)]
+      (case ?actualT
+        (#;Some actualT)
+        (clean actualT)
+
+        _
+        (wrap inputT)))
+
+    (^template [<tag>]
+      (<tag> envT+ unquantifiedT)
+      (do Monad<Check>
+        [envT+' (monad;map @ clean envT+)]
+        (wrap (<tag> envT+' unquantifiedT))))
+    ([#;UnivQ] [#;ExQ])
+    ))