Always call console_error_panic_hook::set_once and remove ad-hoc us…

…es of it

The WASM module now exports `console_error_panic_hook_set_once` which is an alias
for `console_error_panic_hook::set_once` to be called from the JS side.
It is always called when loading the module in the wrapper JS module.

js/wrapper.js

@@ -5,6 +5,8 @@ export { getSnarky, getWasm, withThreadPool };
 
 let getSnarky = () => snarky;
 
+wasm.console_error_panic_hook_set_once();
+
 function getWasm() {
   return wasm;
 }

kimchi/wasm/src/lib.rs

@@ -73,6 +73,11 @@ pub fn wait_until_non_zero(ptr: *const u32) -> u32 {
     unreachable!();
 }
 
+#[wasm_bindgen]
+pub fn console_error_panic_hook_set_once() {
+  console_error_panic_hook::set_once();
+}
+
 pub mod rayon;
 
 /// Arkworks types

kimchi/wasm/src/pasta_fp_plonk_index.rs

@@ -33,7 +33,6 @@ pub fn caml_pasta_fp_plonk_index_create(
     prev_challenges: i32,
     srs: &WasmSrs,
 ) -> Result<WasmPastaFpPlonkIndex, JsError> {
-    console_error_panic_hook::set_once();
     let index = crate::rayon::run_in_pool(|| {
         // flatten the permutation information (because OCaml has a different way of keeping track of permutations)
         let gates: Vec<_> = gates

kimchi/wasm/src/pasta_fq_plonk_index.rs

@@ -33,7 +33,6 @@ pub fn caml_pasta_fq_plonk_index_create(
     prev_challenges: i32,
     srs: &WasmSrs,
 ) -> Result<WasmPastaFqPlonkIndex, JsError> {
-    console_error_panic_hook::set_once();
     let index = crate::rayon::run_in_pool(|| {
         // flatten the permutation information (because OCaml has a different way of keeping track of permutations)
         let gates: Vec<_> = gates

kimchi/wasm/src/plonk_proof.rs

@@ -552,7 +552,6 @@ macro_rules! impl_proof {
                 prev_challenges: WasmFlatVector<$WasmF>,
                 prev_sgs: WasmVector<$WasmG>,
             ) -> Result<WasmProverProof, JsError> {
-                console_error_panic_hook::set_once();
                 let (maybe_proof, public_input) = crate::rayon::run_in_pool(|| {
                     {
                         let ptr: &mut poly_commitment::srs::SRS<$G> =