main.js

const { app, BrowserWindow, ipcMain } = require('electron');
const path = require('path');
const isDev = require('electron-is-dev');

function createWindow() {
  const win = new BrowserWindow({
    width: 1200,
    height: 800,
    minWidth: 800,
    minHeight: 600,
    frame: false,
    webPreferences: {
      nodeIntegration: true,
      contextIsolation: false,
      enableRemoteModule: true,
      webviewTag: true
    }
  });

  win.loadURL(
    isDev
      ? 'http://localhost:3000'
      : `file://${path.join(__dirname, './dist/index.html')}`
  );

  if (isDev) {
    win.webContents.openDevTools();
  }
}

app.whenReady().then(createWindow);

app.on('window-all-closed', () => {
  if (process.platform !== 'darwin') {
    app.quit();
  }
});

app.on('activate', () => {
  if (BrowserWindow.getAllWindows().length === 0) {
    createWindow();
  }
});