add debug statements that appear in js console

Cargo.toml

@@ -19,6 +19,7 @@ opt-level = 3
 [profile.release.package."rln-wasm"]
 # Tell `rustc` to optimize for small code size.
 opt-level = "s"
+debug = true
 
 [profile.release.package."semaphore"]
 codegen-units = 1

rln/Cargo.toml

@@ -49,6 +49,9 @@ serde_json = "=1.0.96"
 serde = { version = "=1.0.163", features = ["derive"] }
 
 include_dir = "=0.7.3"
+console_error_panic_hook = "0.1.7"
+web-sys = { version = "0.3.69", features = ["console"] }
+
 
 [dev-dependencies]
 sled = "=0.34.7"

rln/src/protocol.rs

@@ -103,29 +103,50 @@ pub fn serialize_witness(rln_witness: &RLNWitnessInput) -> Result<Vec<u8>> {
     Ok(serialized)
 }
 
+extern crate web_sys;
+
 pub fn deserialize_witness(serialized: &[u8]) -> Result<(RLNWitnessInput, usize)> {
     let mut all_read: usize = 0;
 
     let (identity_secret, read) = bytes_le_to_fr(&serialized[all_read..]);
     all_read += read;
+    web_sys::console::log_1(&"Read identity secret".into());
+    web_sys::console::log_1(&identity_secret.to_string().into());
+    web_sys::console::log_1(&all_read.to_string().into());
 
     let (path_elements, read) = bytes_le_to_vec_fr(&serialized[all_read..])?;
     all_read += read;
+    web_sys::console::log_1(&"Read path elements".into());
+    web_sys::console::log_1(&format!("{:?}", path_elements).into());
+    web_sys::console::log_1(&all_read.to_string().into());
 
     let (identity_path_index, read) = bytes_le_to_vec_u8(&serialized[all_read..])?;
     all_read += read;
+    web_sys::console::log_1(&"Read identity path index".into());
+    web_sys::console::log_1(&format!("{:?}", identity_path_index).into());
+    web_sys::console::log_1(&all_read.to_string().into());
 
     let (x, read) = bytes_le_to_fr(&serialized[all_read..]);
     all_read += read;
+    web_sys::console::log_1(&"Read x".into());
+    web_sys::console::log_1(&x.to_string().into());
+    web_sys::console::log_1(&all_read.to_string().into());
 
     let (epoch, read) = bytes_le_to_fr(&serialized[all_read..]);
     all_read += read;
+    web_sys::console::log_1(&"Read epoch".into());
+    web_sys::console::log_1(&epoch.to_string().into());
+    web_sys::console::log_1(&all_read.to_string().into());
 
     let (rln_identifier, read) = bytes_le_to_fr(&serialized[all_read..]);
     all_read += read;
+    web_sys::console::log_1(&"Read rln identifier".into());
+    web_sys::console::log_1(&rln_identifier.to_string().into());
+    web_sys::console::log_1(&all_read.to_string().into());
 
     // TODO: check rln_identifier against public::RLN_IDENTIFIER
     if serialized.len() != all_read {
+        web_sys::console::log_1(&"serialized length is not equal to all_read".into());
         return Err(Report::msg("serialized length is not equal to all_read"));
     }
 

rln/src/public.rs

@@ -14,6 +14,9 @@ use color_eyre::{Report, Result};
 use num_bigint::BigInt;
 use std::io::Cursor;
 use utils::{ZerokitMerkleProof, ZerokitMerkleTree};
+extern crate console_error_panic_hook;
+use std::panic;
+
 
 cfg_if! {
     if #[cfg(not(target_arch = "wasm32"))] {
@@ -1191,6 +1194,7 @@ impl RLN<'_> {
     ///
     /// The function returns the corresponding JSON encoding of the input [`RLNWitnessInput`](crate::protocol::RLNWitnessInput) object.
     pub fn get_rln_witness_json(&mut self, serialized_witness: &[u8]) -> Result<serde_json::Value> {
+        panic::set_hook(Box::new(console_error_panic_hook::hook));
         let (rln_witness, _) = deserialize_witness(serialized_witness)?;
         get_json_inputs(&rln_witness)
     }