[ancras]

This is a tricky issue! Here's my take on your Module Federation/Next.js reload problem and some potential solutions:

The Root Cause: Next.js's next/link component is tightly coupled to its internal routing system, which expects to control the entire page. In a microfrontend architecture with Module Federation, you're essentially trying to run two routers (Next.js and your shell) simultaneously, leading to conflicts.

Possible Solutions: Client-Side Routing Alignment (Ideal): Shared Routing Library: If possible, strive for a unified routing solution between your React shell and Next.js microfrontend. Consider libraries like react-router that both can integrate with. This might require restructuring, but offers the cleanest long-term solution.

Custom Event Bus: If a shared router isn't feasible, create a lightweight event bus. When next/link triggers navigation within the Next.js app, emit an event. The shell can listen for this event and use its own routing mechanism to update the URL, preventing a full reload.

Next.js Configuration Tweaks: assetPrefix: If your Next.js app is hosted on a subpath, ensure the assetPrefix in your next.config.js is set correctly to avoid asset loading issues. basePath (Next.js 13+): Similar to assetPrefix, but for routing. This can help isolate the Next.js portion of your URL structure.

Strategic Link Handling: Conditional Rendering: For links within the Next.js microfrontend, continue using next/link. For links pointing outside to other microfrontends or the shell, use the shell's routing mechanism.

Also check Module Federation Version Compatibility: Ensure your versions of Next.js, React, and the Module Federation plugin are compatible.