Electron.js How to minimize/close window to system tray and restore window back from tray?

I actually figured it out a long time ago but for folks who encounter the same problem here is one way you could achieve minimizing to tray and restoring from tray. The trick is to catch the close and minimize events.

var BrowserWindow = require('browser-window'),

var mainWindow = new BrowserWindow({
    width: 850,
    height: 450,
    title: "TEST",
    icon:'./icon.png'
});

mainWindow.on('minimize',function(event){
    event.preventDefault();
    mainWindow.hide();
});

mainWindow.on('close', function (event) {
    if(!application.isQuiting){
        event.preventDefault();
        mainWindow.hide();
    }

    return false;
});

and restoring from Tray

var contextMenu = Menu.buildFromTemplate([
    { label: 'Show App', click:  function(){
        mainWindow.show();
    } },
    { label: 'Quit', click:  function(){
        application.isQuiting = true;
        application.quit();
    } }
]);