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c-kzg-4844
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Format node bindings with clang-format (#268)

This commit is contained in:
Matthew Keil 2023-03-30 12:20:25 -04:00 committed by GitHub
parent dd5ec7ba7e
commit e9c9c912f6
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 404 additions and 340 deletions
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6
.github/workflows/nodejs-tests.yml vendored
View File

@ -27,9 +27,13 @@ jobs:
uses: actions/setup-node@v1
with:
node-version: ${{matrix.node}}
- name: Check formatting
if: matrix.os == 'ubuntu-latest'
working-directory: bindings/node.js
run: make format
- name: Build/test bindings
working-directory: bindings/node.js
run: make
run: make build test bundle
- name: Install distribution
working-directory: bindings/node.js/dist
run: npm install

19
bindings/node.js/.clang-format Normal file
View File

@ -0,0 +1,19 @@
#
# This file is a copy/paste from the one at the root of this repo. It was
# placed here for convenience as not all IDE's will pickup the settings
# in the root file and there was a fight between the IDE formatting and the
# official repo settings. Please keep this file in sync with the root file
#
BasedOnStyle: llvm
IndentWidth: 4
AllowAllParametersOfDeclarationOnNextLine: True
AllowShortFunctionsOnASingleLine: None
AllowShortIfStatementsOnASingleLine: OnlyFirstIf
AlignAfterOpenBracket: BlockIndent
AlignEscapedNewlines: DontAlign
AlwaysBreakAfterDefinitionReturnType: None
BinPackArguments: False
BinPackParameters: False
PenaltyReturnTypeOnItsOwnLine: 1000
PenaltyBreakAssignment: 100

1
bindings/node.js/Makefile
View File

@ -62,6 +62,7 @@ test: install
.PHONY: format
format: install
@$(YARN) prettier --loglevel=warn --write .
@clang-format -i src/kzg.cxx
# Publish package to npm (requires an auth token)
.PHONY: publish

260
bindings/node.js/src/kzg.cxx
View File

@ -1,10 +1,10 @@
#include <stdio.h>
#include <iostream>
#include <sstream> // std::ostringstream
#include <string_view>
#include <napi.h>
#include "c_kzg_4844.h"
#include "blst.h"
#include "c_kzg_4844.h"
#include <iostream>
#include <napi.h>
#include <sstream> // std::ostringstream
#include <stdio.h>
#include <string_view>
/**
* Convert C_KZG_RET to a string representation for error messages.
@ -23,7 +23,6 @@ std::string from_c_kzg_ret(C_KZG_RET ret) {
std::ostringstream msg;
msg << "UNKNOWN (" << ret << ")";
return msg.str();
}
}
@ -58,9 +57,9 @@ typedef struct {
* @param[in] data Pointer KzgAddonData stored by the runtime
* @param[in] hint (unused)
*/
void delete_kzg_addon_data(napi_env /*env*/, void *data, void* /*hint*/) {
if (((KzgAddonData*)data)->is_setup) {
free_trusted_setup(&((KzgAddonData*)data)->settings);
void delete_kzg_addon_data(napi_env /*env*/, void *data, void * /*hint*/) {
if (((KzgAddonData *)data)->is_setup) {
free_trusted_setup(&((KzgAddonData *)data)->settings);
}
free(data);
}
@ -84,7 +83,11 @@ void delete_kzg_addon_data(napi_env /*env*/, void *data, void* /*hint*/) {
KZGSettings *get_kzg_settings(Napi::Env &env, const Napi::CallbackInfo &info) {
KzgAddonData *data = env.GetInstanceData<KzgAddonData>();
if (!data->is_setup) {
Napi::Error::New(env, "Must run loadTrustedSetup before running any other c-kzg functions").ThrowAsJavaScriptException();
Napi::Error::New(
env,
"Must run loadTrustedSetup before running any other c-kzg functions"
)
.ThrowAsJavaScriptException();
return nullptr;
}
return &(data->settings);
@ -121,9 +124,10 @@ inline uint8_t *get_bytes(
const Napi::Env &env,
const Napi::Value &val,
size_t length,
std::string_view name)
{
if (!val.IsTypedArray() || val.As<Napi::TypedArray>().TypedArrayType() != napi_uint8_array) {
std::string_view name
) {
if (!val.IsTypedArray() ||
val.As<Napi::TypedArray>().TypedArrayType() != napi_uint8_array) {
std::ostringstream msg;
msg << "Expected " << name << " to be a Uint8Array";
Napi::TypeError::New(env, msg.str()).ThrowAsJavaScriptException();
@ -139,22 +143,32 @@ inline uint8_t *get_bytes(
return array.Data();
}
inline Blob *get_blob(const Napi::Env &env, const Napi::Value &val) {
return reinterpret_cast<Blob *>(get_bytes(env, val, BYTES_PER_BLOB, "blob"));
return reinterpret_cast<Blob *>(get_bytes(env, val, BYTES_PER_BLOB, "blob")
);
}
inline Bytes32 *get_bytes32(const Napi::Env &env, const Napi::Value &val, std::string_view name) {
return reinterpret_cast<Bytes32 *>(get_bytes(env, val, BYTES_PER_FIELD_ELEMENT, name));
inline Bytes32 *get_bytes32(
const Napi::Env &env, const Napi::Value &val, std::string_view name
) {
return reinterpret_cast<Bytes32 *>(
get_bytes(env, val, BYTES_PER_FIELD_ELEMENT, name)
);
}
inline Bytes48 *get_bytes48(const Napi::Env &env, const Napi::Value &val, std::string_view name) {
return reinterpret_cast<Bytes48 *>(get_bytes(env, val, BYTES_PER_COMMITMENT, name));
inline Bytes48 *get_bytes48(
const Napi::Env &env, const Napi::Value &val, std::string_view name
) {
return reinterpret_cast<Bytes48 *>(
get_bytes(env, val, BYTES_PER_COMMITMENT, name)
);
}
Napi::Value LoadTrustedSetup(const Napi::CallbackInfo& info) {
Napi::Value LoadTrustedSetup(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
// Check if the trusted setup is already loaded
KzgAddonData *data = env.GetInstanceData<KzgAddonData>();
if (data->is_setup) {
Napi::Error::New(env, "Error trusted setup is already loaded").ThrowAsJavaScriptException();
Napi::Error::New(env, "Error trusted setup is already loaded")
.ThrowAsJavaScriptException();
return env.Undefined();
}
@ -162,7 +176,8 @@ Napi::Value LoadTrustedSetup(const Napi::CallbackInfo& info) {
std::string file_path = info[0].As<Napi::String>().Utf8Value();
FILE *file_handle = fopen(file_path.c_str(), "r");
if (file_handle == nullptr) {
Napi::Error::New(env, "Error opening trusted setup file: " + file_path).ThrowAsJavaScriptException();
Napi::Error::New(env, "Error opening trusted setup file: " + file_path)
.ThrowAsJavaScriptException();
return env.Undefined();
}
@ -186,33 +201,36 @@ Napi::Value LoadTrustedSetup(const Napi::CallbackInfo& info) {
/**
* Convert a blob to a KZG commitment.
*
* @param[in] {Blob} blob - The blob representing the polynomial to be committed to
* @param[in] {Blob} blob - The blob representing the polynomial to be
* committed to
*
* @return {KZGCommitment} - The resulting commitment
*
* @throws {TypeError} - For invalid arguments or failure of the native library
*/
Napi::Value BlobToKzgCommitment(const Napi::CallbackInfo& info) {
Napi::Value BlobToKzgCommitment(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
Blob *blob = get_blob(env, info[0]);
if (blob == nullptr) {
return env.Undefined();
return env.Null();
}
KZGSettings *kzg_settings = get_kzg_settings(env, info);
if (kzg_settings == nullptr) {
return env.Undefined();
return env.Null();
}
KZGCommitment commitment;
C_KZG_RET ret = blob_to_kzg_commitment(&commitment, blob, kzg_settings);
if (ret != C_KZG_OK) {
std::ostringstream msg;
msg << "Failed to convert blob to commitment: " << from_c_kzg_ret(ret) ;
msg << "Failed to convert blob to commitment: " << from_c_kzg_ret(ret);
Napi::Error::New(env, msg.str()).ThrowAsJavaScriptException();
return env.Undefined();
}
return Napi::Buffer<uint8_t>::Copy(env, reinterpret_cast<uint8_t *>(&commitment), BYTES_PER_COMMITMENT);
return Napi::Buffer<uint8_t>::Copy(
env, reinterpret_cast<uint8_t *>(&commitment), BYTES_PER_COMMITMENT
);
}
/**
@ -226,45 +244,44 @@ Napi::Value BlobToKzgCommitment(const Napi::CallbackInfo& info) {
*
* @throws {TypeError} - for invalid arguments or failure of the native library
*/
Napi::Value ComputeKzgProof(const Napi::CallbackInfo& info) {
Napi::Value ComputeKzgProof(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
Blob *blob = get_blob(env, info[0]);
if (blob == nullptr) {
return env.Undefined();
return env.Null();
}
Bytes32 *z_bytes = get_bytes32(env, info[1], "zBytes");
if (z_bytes == nullptr) {
return env.Undefined();
return env.Null();
}
KZGSettings *kzg_settings = get_kzg_settings(env, info);
if (kzg_settings == nullptr) {
return env.Undefined();
return env.Null();
}
KZGProof proof;
Bytes32 y_out;
C_KZG_RET ret = compute_kzg_proof(
&proof,
&y_out,
blob,
z_bytes,
kzg_settings
&proof, &y_out, blob, z_bytes, kzg_settings
);
if (ret != C_KZG_OK) {
std::ostringstream msg;
msg << "Failed to compute proof: " << from_c_kzg_ret(ret) ;
msg << "Failed to compute proof: " << from_c_kzg_ret(ret);
Napi::Error::New(env, msg.str()).ThrowAsJavaScriptException();
return env.Undefined();
}
Napi::Array tuple = Napi::Array::New(env, 2);
tuple[(uint32_t)0] = Napi::Buffer<uint8_t>::Copy(env, reinterpret_cast<uint8_t *>(&proof), BYTES_PER_PROOF);
tuple[(uint32_t)1] = Napi::Buffer<uint8_t>::Copy(env, reinterpret_cast<uint8_t *>(&y_out), BYTES_PER_FIELD_ELEMENT);
tuple[(uint32_t)0] = Napi::Buffer<uint8_t>::Copy(
env, reinterpret_cast<uint8_t *>(&proof), BYTES_PER_PROOF
);
tuple[(uint32_t)1] = Napi::Buffer<uint8_t>::Copy(
env, reinterpret_cast<uint8_t *>(&y_out), BYTES_PER_FIELD_ELEMENT
);
return tuple;
}
/**
* Given a blob, return the KZG proof that is used to verify it against the
* commitment.
@ -276,43 +293,43 @@ Napi::Value ComputeKzgProof(const Napi::CallbackInfo& info) {
*
* @throws {TypeError} - for invalid arguments or failure of the native library
*/
Napi::Value ComputeBlobKzgProof(const Napi::CallbackInfo& info) {
Napi::Value ComputeBlobKzgProof(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
Blob *blob = get_blob(env, info[0]);
if (blob == nullptr) {
return env.Undefined();
return env.Null();
}
Bytes48 *commitment_bytes = get_bytes48(env, info[1], "commitmentBytes");
if (commitment_bytes == nullptr) {
return env.Undefined();
return env.Null();
}
KZGSettings *kzg_settings = get_kzg_settings(env, info);
if (kzg_settings == nullptr) {
return env.Undefined();
return env.Null();
}
KZGProof proof;
C_KZG_RET ret = compute_blob_kzg_proof(
&proof,
blob,
commitment_bytes,
kzg_settings
&proof, blob, commitment_bytes, kzg_settings
);
if (ret != C_KZG_OK) {
std::ostringstream msg;
msg << "Error in computeBlobKzgProof: " << from_c_kzg_ret(ret) ;
msg << "Error in computeBlobKzgProof: " << from_c_kzg_ret(ret);
Napi::Error::New(env, msg.str()).ThrowAsJavaScriptException();
return env.Undefined();
}
return Napi::Buffer<uint8_t>::Copy(env, reinterpret_cast<uint8_t *>(&proof), BYTES_PER_PROOF);
return Napi::Buffer<uint8_t>::Copy(
env, reinterpret_cast<uint8_t *>(&proof), BYTES_PER_PROOF
);
}
/**
* Verify a KZG poof claiming that `p(z) == y`.
*
* @param[in] {Bytes48} commitmentBytes - The serialized commitment corresponding to polynomial p(x)
* @param[in] {Bytes48} commitmentBytes - The serialized commitment
* corresponding to polynomial p(x)
* @param[in] {Bytes32} zBytes - The serialized evaluation point
* @param[in] {Bytes32} yBytes - The serialized claimed evaluation result
* @param[in] {Bytes48} proofBytes - The serialized KZG proof
@ -321,42 +338,37 @@ Napi::Value ComputeBlobKzgProof(const Napi::CallbackInfo& info) {
*
* @throws {TypeError} - for invalid arguments or failure of the native library
*/
Napi::Value VerifyKzgProof(const Napi::CallbackInfo& info) {
Napi::Value VerifyKzgProof(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
Bytes48 *commitment_bytes = get_bytes48(env, info[0], "commitmentBytes");
if (commitment_bytes == nullptr) {
return env.Undefined();
return env.Null();
}
Bytes32 *z_bytes = get_bytes32(env, info[1], "zBytes");
if (z_bytes == nullptr) {
return env.Undefined();
return env.Null();
}
Bytes32 *y_bytes = get_bytes32(env, info[2], "yBytes");
if (y_bytes == nullptr) {
return env.Undefined();
return env.Null();
}
Bytes48 *proof_bytes = get_bytes48(env, info[3], "proofBytes");
if (proof_bytes == nullptr) {
return env.Undefined();
return env.Null();
}
KZGSettings *kzg_settings = get_kzg_settings(env, info);
if (kzg_settings == nullptr) {
return env.Undefined();
return env.Null();
}
bool out;
C_KZG_RET ret = verify_kzg_proof(
&out,
commitment_bytes,
z_bytes,
y_bytes,
proof_bytes,
kzg_settings
&out, commitment_bytes, z_bytes, y_bytes, proof_bytes, kzg_settings
);
if (ret != C_KZG_OK) {
std::ostringstream msg;
msg << "Failed to verify KZG proof: " << from_c_kzg_ret(ret) ;
msg << "Failed to verify KZG proof: " << from_c_kzg_ret(ret);
Napi::Error::New(env, msg.str()).ThrowAsJavaScriptException();
return env.Undefined();
}
@ -376,36 +388,33 @@ Napi::Value VerifyKzgProof(const Napi::CallbackInfo& info) {
*
* @throws {TypeError} - for invalid arguments or failure of the native library
*/
Napi::Value VerifyBlobKzgProof(const Napi::CallbackInfo& info) {
Napi::Value VerifyBlobKzgProof(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
Blob *blob_bytes = get_blob(env, info[0]);
if (blob_bytes == nullptr) {
return env.Undefined();
return env.Null();
}
Bytes48 *commitment_bytes = get_bytes48(env, info[1], "commitmentBytes");
if (commitment_bytes == nullptr) {
return env.Undefined();
return env.Null();
}
Bytes48 *proof_bytes = get_bytes48(env, info[2], "proofBytes");
if (proof_bytes == nullptr) {
return env.Undefined();
return env.Null();
}
KZGSettings *kzg_settings = get_kzg_settings(env, info);
if (kzg_settings == nullptr) {
return env.Undefined();
return env.Null();
}
bool out;
C_KZG_RET ret = verify_blob_kzg_proof(
&out,
blob_bytes,
commitment_bytes,
proof_bytes,
kzg_settings);
&out, blob_bytes, commitment_bytes, proof_bytes, kzg_settings
);
if (ret != C_KZG_OK) {
std::ostringstream msg;
msg << "Error in verifyBlobKzgProof: " << from_c_kzg_ret(ret) ;
msg << "Error in verifyBlobKzgProof: " << from_c_kzg_ret(ret);
Napi::Error::New(env, msg.str()).ThrowAsJavaScriptException();
return env.Undefined();
}
@ -414,20 +423,22 @@ Napi::Value VerifyBlobKzgProof(const Napi::CallbackInfo& info) {
}
/**
* Given an array of blobs and their proofs, verify that they corresponds to their
* provided commitment.
* Given an array of blobs and their proofs, verify that they corresponds to
* their provided commitment.
*
* @remark blobs[0] relates to commitmentBytes[0] and proofBytes[0]
*
* @param[in] {Blob} blobs - An array of serialized blobs to verify
* @param[in] {Bytes48} commitmentBytes - An array of serialized commitments to verify
* @param[in] {Bytes48} proofBytes - An array of serialized KZG proofs for verification
* @param[in] {Bytes48} commitmentBytes - An array of serialized commitments to
* verify
* @param[in] {Bytes48} proofBytes - An array of serialized KZG proofs for
* verification
*
* @return {boolean} - true/false depending on batch validity
*
* @throws {TypeError} - for invalid arguments or failure of the native library
*/
Napi::Value VerifyBlobKzgProofBatch(const Napi::CallbackInfo& info) {
Napi::Value VerifyBlobKzgProofBatch(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
C_KZG_RET ret;
Blob *blobs = NULL;
@ -435,7 +446,10 @@ Napi::Value VerifyBlobKzgProofBatch(const Napi::CallbackInfo& info) {
Bytes48 *proofs = NULL;
Napi::Value result = env.Null();
if (!(info[0].IsArray() && info[1].IsArray() && info[2].IsArray())) {
Napi::Error::New(env, "Blobs, commitments, and proofs must all be arrays").ThrowAsJavaScriptException();
Napi::Error::New(
env, "Blobs, commitments, and proofs must all be arrays"
)
.ThrowAsJavaScriptException();
return result;
}
Napi::Array blobs_param = info[0].As<Napi::Array>();
@ -443,26 +457,32 @@ Napi::Value VerifyBlobKzgProofBatch(const Napi::CallbackInfo& info) {
Napi::Array proofs_param = info[2].As<Napi::Array>();
KZGSettings *kzg_settings = get_kzg_settings(env, info);
if (kzg_settings == nullptr) {
return env.Undefined();
return env.Null();
}
uint32_t count = blobs_param.Length();
if (count != commitments_param.Length() || count != proofs_param.Length()) {
Napi::Error::New(env, "Requires equal number of blobs/commitments/proofs").ThrowAsJavaScriptException();
Napi::Error::New(
env, "Requires equal number of blobs/commitments/proofs"
)
.ThrowAsJavaScriptException();
return result;
}
blobs = (Blob *)calloc(count, sizeof(Blob));
if (blobs == nullptr) {
Napi::Error::New(env, "Error while allocating memory for blobs").ThrowAsJavaScriptException();
Napi::Error::New(env, "Error while allocating memory for blobs")
.ThrowAsJavaScriptException();
goto out;
}
commitments = (Bytes48 *)calloc(count, sizeof(Bytes48));
if (commitments == nullptr) {
Napi::Error::New(env, "Error while allocating memory for commitments").ThrowAsJavaScriptException();
Napi::Error::New(env, "Error while allocating memory for commitments")
.ThrowAsJavaScriptException();
goto out;
}
proofs = (Bytes48 *)calloc(count, sizeof(Bytes48));
if (proofs == nullptr) {
Napi::Error::New(env, "Error while allocating memory for proofs").ThrowAsJavaScriptException();
Napi::Error::New(env, "Error while allocating memory for proofs")
.ThrowAsJavaScriptException();
goto out;
}
@ -475,7 +495,9 @@ Napi::Value VerifyBlobKzgProofBatch(const Napi::CallbackInfo& info) {
goto out;
}
memcpy(&blobs[index], blob, BYTES_PER_BLOB);
Bytes48 *commitment = get_bytes48(env, commitments_param[index], "commitmentBytes");
Bytes48 *commitment = get_bytes48(
env, commitments_param[index], "commitmentBytes"
);
if (commitment == nullptr) {
goto out;
}
@ -489,17 +511,12 @@ Napi::Value VerifyBlobKzgProofBatch(const Napi::CallbackInfo& info) {
bool out;
ret = verify_blob_kzg_proof_batch(
&out,
blobs,
commitments,
proofs,
count,
kzg_settings
&out, blobs, commitments, proofs, count, kzg_settings
);
if (ret != C_KZG_OK) {
std::ostringstream msg;
msg << "Error in verifyBlobKzgProofBatch: " << from_c_kzg_ret(ret) ;
msg << "Error in verifyBlobKzgProofBatch: " << from_c_kzg_ret(ret);
Napi::Error::New(env, msg.str()).ThrowAsJavaScriptException();
goto out;
}
@ -513,35 +530,58 @@ out:
return result;
}
Napi::Object Init(Napi::Env env, Napi::Object exports) {
KzgAddonData* data = (KzgAddonData*)malloc(sizeof(KzgAddonData));
KzgAddonData *data = (KzgAddonData *)malloc(sizeof(KzgAddonData));
if (data == nullptr) {
Napi::Error::New(env, "Error allocating memory for kzg setup handle").ThrowAsJavaScriptException();
Napi::Error::New(env, "Error allocating memory for kzg setup handle")
.ThrowAsJavaScriptException();
return exports;
}
data->is_setup = false;
napi_status status = napi_set_instance_data(env, data, delete_kzg_addon_data, NULL);
napi_status status = napi_set_instance_data(
env, data, delete_kzg_addon_data, NULL
);
if (status != napi_ok) {
Napi::Error::New(env, "Error setting kzg bindings instance data").ThrowAsJavaScriptException();
Napi::Error::New(env, "Error setting kzg bindings instance data")
.ThrowAsJavaScriptException();
return exports;
}
// Functions
exports["loadTrustedSetup"] = Napi::Function::New(env, LoadTrustedSetup, "setup");
exports["blobToKzgCommitment"] = Napi::Function::New(env, BlobToKzgCommitment, "blobToKzgCommitment");
exports["computeKzgProof"] = Napi::Function::New(env, ComputeKzgProof, "computeKzgProof");
exports["computeBlobKzgProof"] = Napi::Function::New(env, ComputeBlobKzgProof, "computeBlobKzgProof");
exports["verifyKzgProof"] = Napi::Function::New(env, VerifyKzgProof, "verifyKzgProof");
exports["verifyBlobKzgProof"] = Napi::Function::New(env, VerifyBlobKzgProof, "verifyBlobKzgProof");
exports["verifyBlobKzgProofBatch"] = Napi::Function::New(env, VerifyBlobKzgProofBatch, "verifyBlobKzgProofBatch");
exports["loadTrustedSetup"] = Napi::Function::New(
env, LoadTrustedSetup, "setup"
);
exports["blobToKzgCommitment"] = Napi::Function::New(
env, BlobToKzgCommitment, "blobToKzgCommitment"
);
exports["computeKzgProof"] = Napi::Function::New(
env, ComputeKzgProof, "computeKzgProof"
);
exports["computeBlobKzgProof"] = Napi::Function::New(
env, ComputeBlobKzgProof, "computeBlobKzgProof"
);
exports["verifyKzgProof"] = Napi::Function::New(
env, VerifyKzgProof, "verifyKzgProof"
);
exports["verifyBlobKzgProof"] = Napi::Function::New(
env, VerifyBlobKzgProof, "verifyBlobKzgProof"
);
exports["verifyBlobKzgProofBatch"] = Napi::Function::New(
env, VerifyBlobKzgProofBatch, "verifyBlobKzgProofBatch"
);
// Constants
exports["BYTES_PER_BLOB"] = Napi::Number::New(env, BYTES_PER_BLOB);
exports["BYTES_PER_COMMITMENT"] = Napi::Number::New(env, BYTES_PER_COMMITMENT);
exports["BYTES_PER_FIELD_ELEMENT"] = Napi::Number::New(env, BYTES_PER_FIELD_ELEMENT);
exports["BYTES_PER_COMMITMENT"] = Napi::Number::New(
env, BYTES_PER_COMMITMENT
);
exports["BYTES_PER_FIELD_ELEMENT"] = Napi::Number::New(
env, BYTES_PER_FIELD_ELEMENT
);
exports["BYTES_PER_PROOF"] = Napi::Number::New(env, BYTES_PER_PROOF);
exports["FIELD_ELEMENTS_PER_BLOB"] = Napi::Number::New(env, FIELD_ELEMENTS_PER_BLOB);
exports["FIELD_ELEMENTS_PER_BLOB"] = Napi::Number::New(
env, FIELD_ELEMENTS_PER_BLOB
);
return exports;
}