> Give Emporter a try and let me know how it compares to an Electron app.

I don't see how this technique is comparable to Electron. The article does not describe anything related to a cross-platform user interface, which is what Electron addresses. You can write non-UI logic that is cross-platform in half a dozen mainstream languages and another dozen less popular ones. That's not a big deal. It's the UI component that is harder to achieve, and that is what Electron offers.