backend: update override to account for snake/caml format in wasm vs napi

Author: querolita

src/lib/crypto/kimchi_bindings/js/native/build.sh

@@ -1,15 +1,17 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-CURRENT_DIRECTORY=$(pwd)
-PROOF_SYSTEMS_ROOT=$(cd ../../../proof-systems && pwd)
+SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+CURRENT_DIRECTORY="${SCRIPT_DIR}"
+PROOF_SYSTEMS_ROOT=$(cd "${SCRIPT_DIR}/../../../proof-systems" && pwd)
+PLONK_NAPI_ROOT="${PROOF_SYSTEMS_ROOT}/plonk-napi"
 
-cargo build \
-    --manifest-path "${PROOF_SYSTEMS_ROOT}/Cargo.toml" \
-    --release \
-    -p plonk-napi
+TARGET_ROOT="${CARGO_TARGET_DIR:-"${PROOF_SYSTEMS_ROOT}/target"}"
+export CARGO_TARGET_DIR="${TARGET_ROOT}"
 
-TARGET_ROOT=${CARGO_TARGET_DIR:-"${PROOF_SYSTEMS_ROOT}/target"}
+cargo build \
+    --manifest-path "${PLONK_NAPI_ROOT}/Cargo.toml" \
+    --release
 
 case "$(uname -s)" in
     Darwin*) LIB_NAME="libplonk_napi.dylib" ;;

src/lib/crypto/kimchi_bindings/js/node_js/node_backend.js

@@ -1,16 +1,27 @@
 // Provides: plonk_wasm
 var plonk_wasm = require('./plonk_wasm.js');
 var native = null;
-try { 
-    native = require('../native/plonk_napi.node'); 
+try {
+  native = require('../native/plonk_napi.node');
 } catch (e) {
-    // native not available, keep WASM
+  // native not available, keep WASM
 }
 
-// Overwrite only the functions that are already available in native
-if (native && native.caml_pasta_fp_poseidon_block_cipher) {
-  plonk_wasm.caml_pasta_fp_poseidon_block_cipher = native.caml_pasta_fp_poseidon_block_cipher;
+function snakeToCamel(name) {
+  return name.replace(/_([a-z])/g, function (_match, ch) {
+    return ch.toUpperCase();
+  });
 }
-if (native && native.caml_pasta_fq_poseidon_block_cipher) {
-  plonk_wasm.caml_pasta_fq_poseidon_block_cipher = native.caml_pasta_fq_poseidon_block_cipher;
+
+function override(functionName) {
+  if (!native) return;
+  var camel = snakeToCamel(functionName);
+  var impl = native[functionName] || native[camel];
+  if (typeof impl === 'function') {
+    plonk_wasm[functionName] = impl;
+  }
 }
+
+// Overwrite only the functions that are already available in native
+override('caml_pasta_fp_poseidon_block_cipher');
+override('caml_pasta_fq_poseidon_block_cipher');