How to use the circomlib.eddsa function in circomlib

* along with semaphorejs.  If not, see .
 */

const crypto = require('crypto');
const path = require('path');
const {unstringifyBigInts, stringifyBigInts} = require('websnark/tools/stringifybigint.js');

const chai = require('chai');
const assert = chai.assert;

const snarkjs = require('snarkjs');
const circomlib = require('circomlib');

const bigInt = snarkjs.bigInt;

const eddsa = circomlib.eddsa;
const mimcsponge = circomlib.mimcsponge;

const proof_util = require('../util');

const fetch = require('node-fetch');

const Web3 = require('web3');

const ethers = require('ethers');

let logger;

/* uint8array to hex */

function hex(byteArray) {
  return Array.prototype.map.call(byteArray, function(byte) {

const chai = require('chai');
const path = require('path');
const snarkjs = require('snarkjs');
const compiler = require('circom');
const fs = require('fs');
const circomlib = require('circomlib');

const test_util = require('../../src/test_util');
const build_merkle_tree_example = test_util.build_merkle_tree_example;

const assert = chai.assert;

const bigInt = snarkjs.bigInt;

const eddsa = circomlib.eddsa;
const mimc7 = circomlib.mimc7;

describe('circuit test', function () {
    let circuit;

    this.timeout(100000);

    before( async () => {
      const cirDef = JSON.parse(fs.readFileSync(path.join(__dirname,'../../build/circuit.json')).toString());
      circuit = new snarkjs.Circuit(cirDef);

      console.log('NConstrains Semaphore: ' + circuit.nConstraints);
  });

  it('does it', () => {
        const prvKey = Buffer.from('0001020304050607080900010203040506070809000102030405060708090001', 'hex');

const BN = require('bn.js');
const chai = require('chai');

const crypto = require('crypto');
const fs = require('fs');
const del = require('del');
const path = require('path');

const snarkjs = require('snarkjs');
const circomlib = require('circomlib');

const test_util = require('../../src/test_util');

const bigInt = snarkjs.bigInt;

const eddsa = circomlib.eddsa;
const mimc7 = circomlib.mimc7;

const groth = snarkjs.groth;
const {unstringifyBigInts} = require('snarkjs/src/stringifybigint.js');

const assert = chai.assert;

const Semaphore = artifacts.require('Semaphore');

const RocksDb = require('../../../sbmtjs/src/storage/rocksdb');
const MerkleTree = require('../../../sbmtjs/src/tree');
const Mimc7Hasher = require('../../../sbmtjs/src/hasher/mimc7');

beBuff2int = function(buff) {
    let res = bigInt.zero;
    for (let i=0; i

const crypto = require('crypto');
const fs = require('fs');
const path = require('path');
const {unstringifyBigInts, stringifyBigInts} = require('snarkjs/src/stringifybigint.js');


const chai = require('chai');
const assert = chai.assert;

const snarkjs = require('snarkjs');
const circomlib = require('circomlib');

const bigInt = snarkjs.bigInt;

const eddsa = circomlib.eddsa;

const groth = snarkjs.groth;

const fetch = require("node-fetch");

const Web3 = require('web3');

const winston = require('winston');

const BASE_DIR = process.env.BASE_DIR || process.cwd();

const SemaphoreABI = require(BASE_DIR + '/build/contracts/Semaphore.json');

const SemaphoreModules = require('./semaphore.js');
const SemaphoreClient = SemaphoreModules.client;
const generate_identity = SemaphoreModules.generate_identity;