[Help] how to run the built application and npm run dev at the same time?

[DenniLa2]

On macos unable to run built app and npm run dev at the same time.
If built app is running, then npm run dev returns

otherwise nothing happens.

[DenniLa2]

Need comment this:

if (!app.requestSingleInstanceLock()) {
  app.quit()
  process.exit(0)
}

)

[caoxiemeihao]

Maybe the following code is better.

- if (!app.requestSingleInstanceLock()) {
-   app.quit()
-   process.exit(0)
- }

[DenniLa2]

Maybe the following code is better.

- if (!app.requestSingleInstanceLock()) {
-   app.quit()
-   process.exit(0)
- }

Indeed, allowing many instances if it is not required is a bad idea. So I decided to do this:

if (isDevMode()) {
  app.setName(`${app.name}-dev`)
}

if (!app.requestSingleInstanceLock()) {
  app.quit()
  process.exit(0)
}

@caoxiemeihao thanks

[DenniLa2]

The compiled application and launched through npm run dev get one pid. Because of this, I cannot run both the built and developed applications at the same time.
@caoxiemeihao How to make the assembled application get a name not from package.json.name?

[caoxiemeihao]

import { app } from 'electron'

app.getName()

[DenniLa2]

If I understand correctly, then the OS generates a PID based on the application name. When assembled, the name is taken from package.json.name. When I run the built app and when I run the app from npm run dev they have the same PID. Because of this, I can't run a built app and a development app at the same time.
But if I specify a different name when building in package.json.name, then the assembled application gets a different name. And, as a result, another PID. But it's not convenient.
I want to substitute a name during assembly that is different from what is in package.json.name. How to do it?