kalkulator/index.js

const { app, BrowserWindow } = require('electron');

app.whenReady().then(() => {
    createWindow();

    // This event works on macOS only.
    // If the user clicks on app's icon on the dock and there are no open windows, create one.
    app.on('activate', () => {
        if (BrowserWindow.getAllWindows().length === 0) createWindow();
    });
});

// If all windows are closed and we're not running macOS, quit the app.
app.on('window-all-closed', () => {
    if (process.platform !== 'darwin') app.quit();
});

function createWindow() {
    const win = new BrowserWindow({
        width: 280,
        height: 485,
        resizable: false,
        autoHideMenuBar: true,
    });

    win.loadFile('static/index.html');
}