src/derive.luau

@@ -2,8 +2,7 @@ if not game then script = require "test/relative-string" end
 
 local graph = require(script.Parent.graph)
 local create_node = graph.create_node
-local add_child = graph.add_child
-local update = graph.update
+local set_owner = graph.set_owner
 local track = graph.track
 local get_scope = graph.get_scope
 local open_scope = graph.open_scope
@@ -15,11 +14,10 @@ local function derive<T>(fn: () -> T): () -> T
 
     local node = create_node((false :: any) :: T)
     node.effect = function()
-        node.cache = fn()
+        return fn()
     end
 
-    add_child(owner, node)
-
+    set_owner(node, owner)
     open_scope(node)
 
     node.cache = fn()