Web Worker Node Issue

[itsMikeLowrey]

Hi I am running this code from the demo in node:

const monerojs = require("monero-javascript");

main();
async function main() {
  let daemon = await monerojs.connectToDaemonRpc("https://stagenet.xmr.ditatompel.com")
  console.log(daemon)
}

code source

When I execute the above code I get this error stack :

node:internal/errors:477 ErrorCaptureStackTrace(err); ^

TypeError [ERR_INVALID_URL_SCHEME]: The URL must be of scheme file at new NodeError (node:internal/errors:387:5) at Object.fileURLToPath (node:internal/url:1436:11) at new Worker (C:\Users\Donely\Desktop\giftmoneronodedemo\node_modules\web-worker\cjs\node.js:108:19) at Function.getWorker (C:\Users\Donely\Desktop\giftmoneronodedemo\node_modules\monero-javascript\src\main\js\common\LibraryUtils.js:165:30) at Function.invokeWorker (C:\Users\Donely\Desktop\giftmoneronodedemo\node_modules\monero-javascript\src\main\js\common\LibraryUtils.js:207:37) at Function.connect (C:\Users\Donely\Desktop\giftmoneronodedemo\node_modules\monero-javascript\src\main\js\daemon\MoneroDaemonRpc.js:1472:24) at Function._connectToDaemonRpc (C:\Users\Donely\Desktop\giftmoneronodedemo\node_modules\monero-javascript\src\main\js\daemon\MoneroDaemonRpc.js:109:59) at Object.module.exports.connectToDaemonRpc (C:\Users\Donely\Desktop\giftmoneronodedemo\node_modules\monero-javascript\index.js:133:88) at main (C:\Users\Donely\Desktop\giftmoneronodedemo\offline_wallet_generator.js:5:31) at Object. (C:\Users\Donely\Desktop\giftmoneronodedemo\offline_wallet_generator.js:3:1) at Module._compile (node:internal/modules/cjs/loader:1126:14) at Object.Module._extensions..js (node:internal/modules/cjs/loader:1180:10) at Module.load (node:internal/modules/cjs/loader:1004:32) at Function.Module._load (node:internal/modules/cjs/loader:839:12) at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12) at node:internal/main/run_main_module:17:47 { code: 'ERR_INVALID_URL_SCHEME' }

I would like to use a remote public node instead of a local one for this example. Any help would be much appreciated.

[woodser]

It's failing to get the web worker for some reason, citing an invalid local path being used.

Have you npm installed dependencies?

You can try with the web worker disabled:

let daemon = await monerojs.connectToDaemonRpc({uri: "https://stagenet.xmr.ditatompel.com", proxyToWorker: false});

Also, can you print the worker path being used? i.e.

console.log("Worker path: " + monerojs.LibraryUtils.WORKER_DIST_PATH);

Produces output like:

Worker path: /Users/woodser/git/monero-javascript/src/main/js/common/MoneroWebWorker.js

[itsMikeLowrey]

Disabling webworker made the code work for me. I have ran yarn install also but I still have the issue. The worker path is: Worker path: C:\Users\Donely\Desktop\giftmoneronodedemo\node_modules\monero-javascript\src\main\js\common\MoneroWebWorker.js .

Thanks for the quick response.

[woodser]

Does the file exist at path C:\Users\Donely\Desktop\giftmoneronodedemo\node_modules\monero-javascript\src\main\js\common\MoneroWebWorker.js?

[itsMikeLowrey]

Yes. I believe the file does exist. When I run ls in the folder I get: ` Directory: C:\Users\Donely\Desktop\giftmoneronodedemo\node_modules\monero-javascript\src\main\js\common

Mode LastWriteTime Length Name

---

-a---- 8/25/2022 12:25 AM 33958 biginteger.js -a---- 8/25/2022 12:25 AM 779 Filter.js -a---- 8/25/2022 12:25 AM 48977 GenUtils.js -a---- 8/25/2022 12:25 AM 17786 HttpClient.js -a---- 8/25/2022 12:25 AM 8407 LibraryUtils.js -a---- 8/25/2022 12:25 AM 18362 MoneroConnectionManager.js -a---- 8/25/2022 12:25 AM 378 MoneroConnectionManagerListener.js -a---- 8/25/2022 12:25 AM 665 MoneroError.js -a---- 8/25/2022 12:25 AM 15695 MoneroRpcConnection.js -a---- 8/25/2022 12:25 AM 1015 MoneroRpcError.js -a---- 8/25/2022 12:25 AM 17244 MoneroUtils.js -a---- 8/25/2022 12:25 AM 35728 MoneroWebWorker.js -a---- 8/25/2022 12:25 AM 1147 SslOptions.js -a---- 8/25/2022 12:25 AM 1192 TaskLooper.js -a---- 8/25/2022 12:25 AM 1945 ThreadPool.js`

I am on windows 10 if that helps. I could also get you the node version and more system info if that is useful.

[itsMikeLowrey]

If I add these lines of code to the top of my code it seems to work : if (monerojs.LibraryUtils.WORKER_DIST_PATH.indexOf("C:") == 0 && monerojs.LibraryUtils.WORKER_DIST_PATH.indexOf("file://") == -1) monerojs.LibraryUtils.WORKER_DIST_PATH = "file://"+monerojs.LibraryUtils.WORKER_DIST_PATH;

I found this code here

[woodser]

Thanks, I've added similar logic in release v0.7.4 to prefix "C:" paths with "file://".

[itsMikeLowrey]

Thank you so much for the help and the work you do for this project!