diff --git a/TODO.md b/TODO.md
index 2dd58f5..fce8645 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,10 +1,12 @@
 
 ## TODO
 
+- [x] Put worker in iframe on safari
 - [ ] if we're staying with this version of auto, we might need to list candidates and why they're rejected. e.g. I had a bifunctor fail to solve because the right answer unblocked a Foo vs IO Foo mismatch
 - [ ] literals for double
 - [ ] default failing case for constructor matching
 - [ ] Add icit to Lam (see `check` for details)
+- [ ] add jump to definition magic to vscode extension
 - [ ] TCO? Probably needed in browser, since v8 doesn't do it. bun and JavaScriptCore do support it.
 - [x] deconstructing `let` (and do arrows)
 - [x] Fix string printing to be js instead of weird Idris strings
diff --git a/aoc2023/Prelude.newt b/aoc2023/Prelude.newt
index 299c1d3..683dab1 100644
--- a/aoc2023/Prelude.newt
+++ b/aoc2023/Prelude.newt
@@ -114,7 +114,7 @@ _>>=_ : {0 m} {{Monad m}} {0 a b} -> (m a) -> (a -> m b) -> m b
 ma >>= amb = bind ma amb
 
 _>>_ :  {0 m} {{Monad m}} {0 a b} -> m a -> m b -> m b
-ma >> mb = mb
+ma >> mb = ma >>= (\ _ => mb)
 
 join : ∀ m. {{Monad m}} {0 a} → m (m a) → m a
 join mma = mma >>= id
@@ -622,3 +622,8 @@ isNothing _ = False
 instance Bifunctor _×_ where
   bimap f g (a,b) = (f a, g b)
 
+instance Functor IO where
+  map f a = bind a $ \ a => pure (f a)
+
+uncurry : ∀ a b c. (a -> b -> c) -> (a × b) -> c
+uncurry f (a,b) = f a b
diff --git a/aoc2024/Day3.newt b/aoc2024/Day3.newt
index d481107..fd5047b 100644
--- a/aoc2024/Day3.newt
+++ b/aoc2024/Day3.newt
@@ -4,17 +4,12 @@ import Prelude
 import Node
 import Aoc
 
-uncurry : ∀ a b c. (a -> b -> c) -> (a × b) -> c
-uncurry f (a,b) = f a b
-
 Parser : U → U
 Parser a = List Char → Maybe (a × List Char)
 
 instance Monad Parser where
   pure a = \ cs => Just (a, cs)
-  bind ma mab = \ cs => case ma cs of
-    Nothing =>  Nothing
-    Just (a,cs) => mab a cs
+  bind ma mab = \ cs => ma cs >>= uncurry mab
 
 instance Alternative Parser where
   pa <|> pb = \ cs => case pa cs of
diff --git a/aoc2024/Node.newt b/aoc2024/Node.newt
new file mode 120000
index 0000000..66718c9
--- /dev/null
+++ b/aoc2024/Node.newt
@@ -0,0 +1 @@
+../aoc2023/Node.newt
\ No newline at end of file
diff --git a/aoc2024/Prelude.newt b/aoc2024/Prelude.newt
new file mode 120000
index 0000000..faf6e14
--- /dev/null
+++ b/aoc2024/Prelude.newt
@@ -0,0 +1 @@
+../aoc2023/Prelude.newt
\ No newline at end of file