main.js

// Require Node.JS Dependencies
const { join } = require("path");

// Require Third-party Dependencies
const { app, BrowserWindow } = require("electron");

process.env.ELECTRON_DISABLE_SECURITY_WARNINGS = true;

// 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 win;

function createWindow() {

    // Create the browser window.
    win = new BrowserWindow({ width: 1200, height: 700 });

    // and load the index.html of the app.
    win.loadFile(join(__dirname, "view", "index.html"));

    // Open the DevTools.
    win.webContents.openDevTools();

    // Emitted when the window is closed.
    win.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.
        win = 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);

// Quit when all windows are closed.
app.on("window-all-closed", () => {
    // 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", () => {
    // 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 (win === null) {
        createWindow();
    }
});