Error of creating Multiple Instances of Windows in MacOS after building

Describe the bug I am building an vue-cli-electron app that uses pm2 and nedb. it is mainly to use pm2 to start external .js script provided the path, and also nedb to store the saved configurations. The code works fine when I use electron:serve, but when i use electron:build, the app will work fine for a while, but after restarting the pc, the app will no longer work (including the external modules), and will repeated open multiple instances of the app.

To Reproduce Steps to reproduce the behavior: In vue.config.js,

  pluginOptions: {
      electronBuilder: {
        preload: 'src/preload.js',
        externals: ['pm2','nedb'],
        builderOptions: {
          extraResources: ['src/serverconfig.db']
        },
      }
  }

In background.js ,

const Datastore = require('nedb')
const pm2 = require('pm2')
...
const isBuild = process.env.NODE_ENV === 'production'
const pathToDbFile = path.join(
  isBuild ? __dirname : __static,
  '../src/serverconfig.db',
);

let db = new Datastore({ filename: pathToDbFile });
db.persistence.setAutocompactionInterval(5000)

...
ipcMain.on('start', (event, arg) => {
  console.log(arg)

  pm2.start({
      name: arg[0],
      cwd: path.dirname(arg[2]),
      script: arg[1],
      logDateFormat: 'YYYY-MM-DD HH:mm Z',
      interpreter:(process.platform !== 'darwin')?'node':'/usr/local/bin/node'
    }, (e, r) => {
        if (e) {
          const message = arg[0] + ' server failed to start!'
          console.log (message)
          win.webContents.send('ipcMessage',message)
        } else {
          const message = arg[0] + ' server started'
          console.log (message)
          win.webContents.send('ipcMessage',message)
        }
      })
})

ipcMain.on('saveDb', async (event, arg) => {

  console.log(arg)
  db.loadDatabase()
  var doc = { name:arg[0],
              cwd: path.dirname(arg[2]),
              script: arg[1],
              logDateFormat: 'YYYY-MM-DD HH:mm Z',
              interpreter:(process.platform !== 'darwin')?'node':'/usr/local/bin/node'
            }
  await db.insert(doc, function (err, newDoc) {
    const message = newDoc.name + ' config successfully saved'
    win.webContents.send('ipcMessage',message)
  });
  db.persistence.compactDatafile()

})

In setup.js, //where the script is saved and use pm2 to start

...
      const ipcArray=[appName,script,path]
      window.ipcRenderer.send('start',ipcArray)
      window.ipcRenderer.send('saveDb',ipcArray)
...

Environment (please complete the following information):

MacOS 10.15.5 "nedb": "^1.8.0", "pm2": "^4.4.0", node 12.14.0

I have tried requestSingleInstanceLock of electron to solve the issue. although it can restrict the spawning of the multiple instances, but my app is non functional, both nedb and pm2 cant be used.

i checked on the pm2 log, and this is the problem (node:2085) ProtocolDeprecateCallback: The callback argument of protocol module APIs is no longer needed. (node:2090) ProtocolDeprecateCallback: The callback argument of protocol module APIs is no longer needed. (node:2096) ProtocolDeprecateCallback: The callback argument of protocol module APIs is no longer needed. (node:2102) ProtocolDeprecateCallback: The callback argument of protocol module APIs is no longer needed. (node:2109) ProtocolDeprecateCallback: The callback argument of protocol module APIs is no longer needed. (node:2114) ProtocolDeprecateCallback: The callback argument of protocol module APIs is no longer needed. (node:2119) ProtocolDeprecateCallback: The callback argument of protocol module APIs is no longer needed.

I have run and build this app on windows and there is not a single problem. The problem only appears when i build it and run it on Mac

nklayman / vue-cli-plugin-electron-builder

Error of creating Multiple Instances of Windows in MacOS after building #919