main.js

// Modules to control application life and create native browser window
const { app, BrowserWindow } = require("electron");
const path = require("path");
// Keep a global reference of the window object, if you don't, the window will
// be closed automatically when the JavaScript object is garbage collected.
let mainWindow;

function createWindow() {
  // Create the browser window.
  mainWindow = new BrowserWindow({
    minWidth: 990,
    minHeight: 540,
    width:1200,
    height:700,
    webPreferences: {
      preload: path.join(__dirname, "preload.js"),
      nodeIntegration: true
    }
  });

  mainWindow.setMenuBarVisibility(false);

  // and load the index.html of the app.
  mainWindow.loadFile("./login.html");

  // Open the DevTools.
  // mainWindow.webContents.openDevTools()

  // Emitted when the window is closed.
  mainWindow.on("closed", function() {
    // Dereference the window object, usually you would store windows
    // in an array if your app supports multi windows, this is the time
    // when you should delete the corresponding element.
    mainWindow = null;
  });
  mainWindow.on("ready-to-show", () => {
    mainWindow.show();
  });
}

// This method will be called when Electron has finished
// initialization and is ready to create browser windows.
// Some APIs can only be used after this event occurs.
app.on("ready", createWindow);

// Quit when all windows are closed.
app.on("window-all-closed", function() {
  // On macOS it is common for applications and their menu bar
  // to stay active until the user quits explicitly with Cmd + Q
  if (process.platform !== "darwin") app.quit();
});

app.on("activate", function() {
  // On macOS it's common to re-create a window in the app when the
  // dock icon is clicked and there are no other windows open.
  if (mainWindow === null) createWindow();
});

// In this file you can include the rest of your app's specific main process
// code. You can also put them in separate files and require them here.

app.on('web-contents-created', (e, contents) => {
  contents.on('new-window', (e, url) => {
    e.preventDefault();
    require('open')(url);
  });
  // contents.on('will-navigate', (e, url) => {
  //   if (url !== contents.getURL()) e.preventDefault(), require('open')(url);
  // });
});