Error: Cannot find module - Windows OS

[directcuteo]

I am trying to run a simple example from the HelloWorld tutorial but there is an error when I try to build the file:

npm run build
node build/src/main.js

D:\mina\hello-world-zk-app\node_modules\snarkyjs\dist\node\_node_bindings\snarky_js_node.bc.cjs:7427
         throw err;
         ^
Error: Cannot find module 'D:\D:\mina\hello-world-zk-app\node_modules\snarkyjs\dist\node\snarkyjs-bindings\js\node\node-backend.js'
    at Module._resolveFilename (node:internal/modules/cjs/loader:1082:15)
    at Module._load (node:internal/modules/cjs/loader:928:27)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:83:12)
    at MessagePort.<anonymous> (node:internal/main/worker_thread:185:26)
    at [nodejs.internal.kHybridDispatch] (node:internal/event_target:762:20)
    at exports.emitMessage (node:internal/per_context/messageport:23:28)
Emitted 'error' event on Worker instance at:
    at [kOnErrorMessage] (node:internal/worker:323:10)
    at [kOnMessage] (node:internal/worker:334:37)
    at MessagePort.<anonymous> (node:internal/worker:229:57)
    at [nodejs.internal.kHybridDispatch] (node:internal/event_target:762:20)
    at exports.emitMessage (node:internal/per_context/messageport:23:28) {
  code: 'MODULE_NOT_FOUND',
  requireStack: []
}

it is pretty clear what the error is: there is double "D" -> D:\D:\mina\hello-world-zk-app.......

My setup:

Windows 11
node v20.1.0
tsc 4.9.3
npm 8.4.1

[mitschabaude]

Hi @directcuteo, thanks for the report! I can't reproduce the bug, but I'm on Linux. I wonder if it's a bug with node 20 on windows.

• Do you experience the same on node 19?
• Can you share the code of a minimal main.ts which reproduces the problem?

[directcuteo]

Yes, I installed node v19 and I encounter the same error.

This is the entire code (I've put everything in one file). tsc command runs fine

import { AccountUpdate, Field, isReady, method, Mina, PrivateKey, shutdown, SmartContract, state, State } from 'snarkyjs';

export class Square extends SmartContract {
  @state(Field) num = State<Field>();

  init() {
    super.init();
    this.num.set(Field(3));
  }

  @method update(square: Field) {
    const currentState = this.num.get();
    this.num.assertEquals(currentState);
    square.assertEquals(currentState.mul(currentState));
    this.num.set(square);
  }
}

await isReady;
console.log('SnarkyJS loaded');
const useProof = false;
const Local = Mina.LocalBlockchain({ proofsEnabled: useProof });
Mina.setActiveInstance(Local);
const { privateKey: deployerKey, publicKey: deployerAccount } = Local.testAccounts[0];
const { privateKey: senderKey, publicKey: senderAccount } = Local.testAccounts[1];

const zkAppPrivateKey = PrivateKey.random();
const zkAppAddress = zkAppPrivateKey.toPublicKey();

const zkAppInstance = new Square(zkAppAddress);
const deployTxn = await Mina.transaction(deployerAccount, () => {
  AccountUpdate.fundNewAccount(deployerAccount);
  zkAppInstance.deploy();
});
await deployTxn.sign([deployerKey, zkAppPrivateKey]).send();


// get the initial state of Square after deployment
const num0 = zkAppInstance.num.get();
console.log('state after init:', num0.toString());

// ----------------------------------------------------
const txn1 = await Mina.transaction(senderAccount, () => {
  zkAppInstance.update(Field(9));
});
await txn1.prove();
await txn1.sign([senderKey]).send();

const num1 = zkAppInstance.num.get();
console.log('state after txn1:', num1.toString());
// ----------------------------------------------------

console.log('Shutting down');
await shutdown();

The error is gone if I comment the line await txn1.prove();
Thank you for helping!

[directcuteo]

@mitschabaude I hope there is enough information so you can investigate this issue. I am waiting for your response. Thank you!

[mitschabaude]

Thanks @directcuteo, I'll find someone on the team with Windows so we can investigate this