main.js

'use strict';

// Import parts of electron to use
const { app, ipcMain, BrowserWindow } = require('electron');
const path = require('path');
const url = require('url');

// handle IPC reqs
ipcMain.handle('getPath', async (event, arg) => app.getPath(arg));

// 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;

// Keep a reference for dev mode
let dev = false;

if (process.env.NODE_ENV !== undefined && process.env.NODE_ENV === 'development') {
  dev = true;
}

// Temporary fix broken high-dpi scale factor on Windows (125% scaling)
// info: https://github.com/electron/electron/issues/9691
if (process.platform === 'win32') {
  app.commandLine.appendSwitch('high-dpi-support', 'true');
  app.commandLine.appendSwitch('force-device-scale-factor', '1');
}

function createWindow() {
  // Create the browser window.
  mainWindow = new BrowserWindow({
    title: 'Ahoy!',
    minWidth: 768,
    minHeight: 360,
    show: false,
    webPreferences: {
      nodeIntegration: true,
      contextIsolation: false,
    },
  });

  // and load the index.html of the app.
  let indexPath;

  if (dev && process.argv.indexOf('--noDevServer') === -1) {
    indexPath = url.format({
      protocol: 'http:',
      host: 'localhost:8080',
      pathname: 'index.html',
      slashes: true,
    });
  } else {
    indexPath = url.format({
      protocol: 'file:',
      pathname: path.join(__dirname, 'dist', 'index.html'),
      slashes: true,
    });
  }

  mainWindow.loadURL(indexPath);

  // Don't show until we are ready and loaded 
  mainWindow.once('ready-to-show', () => {
    mainWindow.show();

    // Open the DevTools automatically if developing
    if (dev) {
      const { default: installExtension, REACT_DEVELOPER_TOOLS } = require('electron-devtools-installer');

      installExtension(REACT_DEVELOPER_TOOLS)
        .catch((err) => console.error('Error loading React DevTools: ', err));
      mainWindow.webContents.openDevTools();
    }
  });

  // Emitted when the window is closed.
  mainWindow.on('closed', () => {
    // 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;
  });
}

// 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);