[Module Federation] Expose Native Federation fileName config option

[jberndsen-planon]

Context:
The @nx/module-federation package exposes the ModuleFederationConfig interface, which abstracts the underlying Webpack/Rspack configuration passed to @module-federation/enhanced. However, this abstraction currently hides the fileName property (reference).

Problem:
With the recommendation of using mf-manifest.json as the preferred method for initializing Micro Frontends, there is a need to cache-bust the generated remoteEntry.mjs. The preferred approach is to append a chunkhash to the filename (e.g., remoteEntry.[chunkhash].mjs) and ensure this is reflected in the generated mf-manifest.json.

Current Workarounds Considered:

• Configuring the web server to set cache-control headers specifically for remoteEntry.mjs and disabling caching altogether. This has an undesired impact on performance.
• Attempted to implement a Module Federation Runtime plugin that modifies the URL used to load remoteEntry.mjs by appending a version query parameter (e.g., ?v=123). However, no adequate hook seems available to support this behavior. @ScriptedAlchemy Can you confirm whether such a hook exists or suggest an alternative?

Feature Request:
Expose the fileName property in ModuleFederationConfig to allow customization of the remoteEntry filename, including support for chunkhash. This would enable proper cache busting when also correctly reflected in mf-manifest.json.

[ScriptedAlchemy]

All hooks work. Init or before load / before request just mutate the object values. Federation examples has a runtime plugins dir where i do that in a few examples for reference @jberndsen-planon

[jberndsen-planon]

I struggle with finding out how. I can control cache busting just fine for mf-manifest.json, but the only option I can find to update the reference to remoteEntry.mjs is something like below, but from the screenshot you can see it doesn't have the desired effect. All other references I can find in args for init or beforeRequest point to the mf-manifest.json.

import type { FederationRuntimePlugin } from '@module-federation/enhanced/runtime';

const CacheBustingPlugin = (): FederationRuntimePlugin => ({
  name: 'cache-busting-plugin',
  // init: (args) => {
  //   args.origin.moduleCache.forEach((value, key) => {
  //     value.remoteInfo.entry += '?v=123';
  //   });
  //   return args;
  // },
  beforeRequest: (args) => {
    const entry = args.origin.moduleCache.get(args.id);
    if (entry) {
      entry.remoteInfo.entry += '?v=123';
      args.origin.moduleCache.set(args.id, entry);
      console.log(`updated ${args.id}`, entry);
    }

    return args;
  },
});

export default CacheBustingPlugin;

[ScriptedAlchemy]

youd check if theres already a cache bust on it, if so skip it?