shared configuration not fully reflected in mf-manifest.json (enhanced federation with Rsbuild)

[foxylion]

Describe the bug

I tried configuring the shared section of the module federation configuration, but some changes are not being reflected in the mf-manifest.json file.

Steps to Reproduce:

• Clone the repository from here.
• Start the project located at rsbuild/module-federation-enhanced/consumer, the configuration includes the following:

   shared: {
     react: { singleton: false, requiredVersion: '^18.0.0' },
     'react-dom': { singleton: false, requiredVersion: '^18.0.0' },
   }

• Check the mf-manifest.json file at http://localhost:2000/mf-manifest.json, the shared block in the manifest contains the following:

   "shared": [
     {
       "id": "federation_consumer:react-dom",
       "name": "react-dom",
       "version": "18.2.0",
       "singleton": true,
       "requiredVersion": "^18.2.0",
       "assets": {
         "js": {
           "async": [
             "static/js/async/vendors-node_modules_pnpm_react_18_2_0_node_modules_react_index_js.js"
           ],
           "sync": [
             "static/js/async/vendors-node_modules_pnpm_react-dom_18_2_0_react_18_2_0_node_modules_react-dom_index_js.js"
           ]
         },
         "css": {
           "async": [],
           "sync": []
         }
       }
     },
     {
       "id": "federation_consumer:react",
       "name": "react",
       "version": "18.2.0",
       "singleton": true,
       "requiredVersion": "^18.2.0",
       "assets": {
         "js": {
           "async": [],
           "sync": [
             "static/js/async/vendors-node_modules_pnpm_react_18_2_0_node_modules_react_index_js.js"
           ]
         },
         "css": {
           "async": [],
           "sync": []
         }
       }
     }
   ]

The mf-manifest.json file reflects the singleton setting as true, despite my configuration setting it to false. Additionally, the requiredVersion specified in my configuration (^18.0.0) seems to be overridden by default values.

Reproduction

https://github.com/foxylion/rspack-examples/tree/repro/share-config-not-in-mf-manifest-json (Diff)

Used Package Manager

pnpm

System Info

System:
  OS: Linux 6.8 Ubuntu 24.04.1 LTS 24.04.1 LTS (Noble Numbat)
  CPU: (20) x64 12th Gen Intel(R) Core(TM) i7-12700H
  Memory: 4.60 GB / 31.02 GB
  Container: Yes
  Shell: 5.9 - /bin/zsh
Binaries:
  Node: 20.18.0 - ~/.nvm/versions/node/v20.18.0/bin/node
  npm: 10.8.2 - ~/.nvm/versions/node/v20.18.0/bin/npm
  pnpm: 9.12.1 - ~/.local/share/pnpm/pnpm
Browsers:
  Chrome: 129.0.6668.100

Validations

• Read the docs.
• Read the common issues list.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Make sure this is a Module federation issue and not a framework-specific issue.
• The provided reproduction is a minimal reproducible example of the bug.

[foxylion]

@ScriptedAlchemy do you have any thoughts on that? Is this possibly another Rsbuild related problem?

[ScriptedAlchemy]

@2heal1 can you cake a look at this?