electron-vite-vue/src/main/index.ts

import path from 'path'
import { app, BrowserWindow } from 'electron'
import { register } from './communication'

let win: BrowserWindow | null = null

function bootstrap() {
  win = new BrowserWindow({
    webPreferences: {
      preload: path.join(__dirname, '../preload/index.js'),
    },
  })

  if (app.isPackaged) {
    win.loadFile(path.join(__dirname, '../render/index.html'))
  } else {
    win.maximize()
    win.webContents.openDevTools()
    win.loadURL(`http://localhost:${process.env.PORT}`)
  }

  // something init setup
  register(win)
}

app.whenReady().then(bootstrap)

app.on('window-all-closed', () => { win = null })