cleanups

README.md

@@ -1,3 +1,14 @@
 # RLN
 
-[see wip document about rln](https://hackmd.io/tMTLMYmTR5eynw2lwK9n1w?view)
+This is the development repo of rate limit nullifier zkSNARK circuits.
+
+For details, see work in progress document [here](https://hackmd.io/tMTLMYmTR5eynw2lwK9n1w?view))
+
+
+## Wasm support
+
+### Test
+
+```
+wasm-pack test --release --node -- --features wasm
+```

src/merkle.rs

@@ -7,7 +7,7 @@ pub struct MerkleTree<E>
 where
   E: Engine,
 {
-  hasher: Hasher<E>,
+  pub hasher: Hasher<E>,
   zero: Vec<E::Fr>,
   depth: usize,
   nodes: HashMap<(usize, usize), E::Fr>,
@@ -72,8 +72,8 @@ where
         }
       }
     };
-    
-    self.recalculate_from(leaf_index);
+    let leaf = self.hasher.hash(vec![new]);
+    self.update(leaf_index, leaf);
   }
 
   pub fn update(&mut self, leaf_index: usize, leaf: E::Fr) {

src/poseidon.rs

@@ -56,7 +56,6 @@ impl<E: Engine> PoseidonParams<E> {
   }
 
   pub fn round_constant(&self, round: usize) -> E::Fr {
-    let w = self.width();
     return self.round_constants[round];
   }
 
@@ -193,8 +192,7 @@ impl<E: Engine> Poseidon<E> {
   }
 
   fn add_round_constants(&mut self, round: usize) {
-    let w = self.params.t;
-    for (j, b) in self.state.iter_mut().enumerate() {
+    for (_, b) in self.state.iter_mut().enumerate() {
       let c = self.params.round_constants[round];
       b.add_assign(&c);
     }