[Vuejs]-How can I remove title from transparent, frameless window

Try that:

mainApp = new BrowserWindow({
        width: 200,
        height: 200,
        x: 100,
        y: 100,
        resizable: false,
        alwaysOnTop: true,
        frame: false,
        focusable: true,
        minimizable: false,
        maximizable: false,
        closable: false,
        autoHideMenuBar: true,
        transparent: true,
        show: false,
        webPreferences: {
             overlayScrollbars: true
        }
});
mainApp.name ='give a name';
mainApp.setMenu(null);
mainApp.setVisibleOnAllWorkspaces(true);