diff --git a/nomsu.lua b/nomsu.lua
index b15e90b..17b40fe 100644
--- a/nomsu.lua
+++ b/nomsu.lua
@@ -38,18 +38,6 @@ local Tuple = immutable(nil, {
     end)(), ", ")) .. ")"
   end
 })
-local cached
-cached = function(fn)
-  local cache = setmetatable({ }, {
-    __mode = "k"
-  })
-  return function(self, arg)
-    if not (cache[arg]) then
-      cache[arg] = fn(self, arg)
-    end
-    return cache[arg]
-  end
-end
 do
   local STRING_METATABLE = getmetatable("")
   STRING_METATABLE.__add = function(self, other)
@@ -363,7 +351,7 @@ do
       end
       return code:gsub("\n", "\n" .. ("    "):rep(levels))
     end,
-    get_line_number = cached(function(self, tree)
+    get_line_number = function(self, tree)
       local metadata = self.tree_metadata[tree]
       if not (metadata) then
         return "<dynamically generated>"
@@ -381,7 +369,7 @@ do
         last_line = last_line + 1
       end
       return tostring(metadata.filename) .. ":" .. tostring(first_line)
-    end),
+    end,
     get_source_code = function(self, tree)
       local metadata = self.tree_metadata[tree]
       if not (metadata) then
@@ -1363,7 +1351,7 @@ do
         end
       end)
     end,
-    tree_to_stub = cached(function(self, tree)
+    tree_to_stub = function(self, tree)
       if tree.type ~= "FunctionCall" then
         error("Tried to get stub from non-functioncall tree: " .. tostring(tree.type), 0)
       end
@@ -1378,8 +1366,8 @@ do
         end
         return _accum_0
       end)(), " ")
-    end),
-    tree_to_named_stub = cached(function(self, tree)
+    end,
+    tree_to_named_stub = function(self, tree)
       if tree.type ~= "FunctionCall" then
         error("Tried to get stub from non-functioncall tree: " .. tostring(tree.type), 0)
       end
@@ -1394,7 +1382,7 @@ do
         end
         return _accum_0
       end)(), " ")
-    end),
+    end,
     get_stubs_from_signature = function(self, signature)
       if type(signature) ~= 'table' or signature.type then
         error("Invalid signature: " .. tostring(repr(signature)), 0)
diff --git a/nomsu.moon b/nomsu.moon
index 2b384b7..ecd4cef 100755
--- a/nomsu.moon
+++ b/nomsu.moon
@@ -23,13 +23,6 @@ colored = setmetatable({}, {__index:(_,color)-> ((msg)-> colors[color]..(msg or
 
 Tuple = immutable(nil, {name:"Tuple", __tostring:=> "Tuple(#{concat [repr(x) for x in *@], ", "})"})
 
-cached = (fn)->
-    cache = setmetatable({}, {__mode:"k"})
-    return (self, arg)->
-        unless cache[arg]
-            cache[arg] = fn(self, arg)
-        return cache[arg]
-
 -- Use + operator for string coercive concatenation (note: "asdf" + 3 == "asdf3")
 -- Use [] for accessing string characters, or s[{3,4}] for s:sub(3,4)
 -- Note: This globally affects all strings in this instance of Lua!
@@ -262,7 +255,7 @@ class NomsuCompiler
     indent: (code, levels=1)=>
         return code\gsub("\n","\n"..("    ")\rep(levels))
 
-    get_line_number: cached (tree)=>
+    get_line_number: (tree)=>
         metadata = @tree_metadata[tree]
         unless metadata
             return "<dynamically generated>"
@@ -924,11 +917,11 @@ class NomsuCompiler
                 if replacements[id] != nil
                     return replacements[id]
 
-    tree_to_stub: cached (tree)=>
+    tree_to_stub: (tree)=>
         if tree.type != "FunctionCall" then error "Tried to get stub from non-functioncall tree: #{tree.type}", 0
         return concat([(t.type == "Word" and t.value or "%") for t in *tree.value], " ")
 
-    tree_to_named_stub: cached (tree)=>
+    tree_to_named_stub: (tree)=>
         if tree.type != "FunctionCall" then error "Tried to get stub from non-functioncall tree: #{tree.type}", 0
         return concat([(t.type == "Word" and t.value or "%#{t.value}") for t in *tree.value], " ")