spawn process of node js giving error in electron app in production mode

Question

I am developing an electron app with react and I have a python file which I want to run through main process of electron.

I am using child-process of node js to spawn the python exe(esic.exe) file. I created the python exe file using pyinstaller which runs fine in standalone mode.

const exeLocation = path.join(__dirname, 'dist/esic.exe')
const process = spawn(exeLocation, [args])

In development mode everything runs properly, main process of electron could able to spawn the process and send arguments and receive the output, but once I package the electron app using electron-builder it gives me this ENOENT code error

I searched about ENOENT error and found that it's the error which indicates that the specified path for a file or directory does not exist in the filesystem so I tried to unpackage the electron build which has a app.asar file. On unpackaging the asar file I found that it contains the dist directory and there is a esic.exe file in it, so that means the electron-builder packaged the build correctly.

Now I am totally confused about why it runs in development mode but not in production mode.

tdy · Accepted Answer · 2024-05-05 16:20:25Z

0

Place the exe file outside the app.asar and set the third parameter of spawn to {shell: true}.

edited May 5, 2024 at 16:20

tdy

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answered May 5, 2024 at 3:48

Madoka Kami

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Comments

skyconfusion · Accepted Answer · 2025-01-09 03:54:51Z

0

keep this exe outside asar. give its absolute path to spawn. like this

if (app.isPackaged) {
    workerPath = path.join(
      path.dirname(app.getPath("exe")),
      "resources",
      "bin",
      "esic.exe"
    );
  } else {
    workerPath = path.join(__dirname, "..", "bin", "esic.exe");
  }

in package.js build section add

"extraResources": [
      {
        "from": "bin/",
        "to": "bin/",
        "filter": [
          "**/*"
        ]
      }

answered Jan 9 at 3:54

skyconfusion

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