RSBuild with Module federation issue while have multiple child apps

[ambujbpl]

Hello RSBuild Team,
I am trying to set two child apps with host app.
and my second app not loaded fine with host app but when I try to run and configure single child app than both apps working fine (individually).

host rsbuild.config.js

moduleFederation: {
       options: {
           name: 'host',
           remotes: {
               app1: 'app1@http://localhost:5000/remoteEntry.js',
               app2: 'app2@http://localhost:4000/remoteEntry.js',
           },
           shared: {
               ...dependencies,
               react: {
                   singleton: true,
                   requiredVersion: dependencies.react,
               },
               'react-dom': {
                   singleton: true,
                   requiredVersion: dependencies['react-dom'],
               },
           },
       },

app 1 rsbuild.config.js

 moduleFederation: {
    options: {
        name: 'app1',
        exposes: {
            './App': './src/App',
        },
        filename: 'remoteEntry.js',
        shared: {
            ...dependencies,
            react: {
                singleton: true,
                requiredVersion: dependencies.react,
            },
            'react-dom': {
                singleton: true,
                requiredVersion: dependencies['react-dom'],
            },
        },
    },
}

app 2 rsbuild.config.js

 moduleFederation: {
    options: {
        name: 'app2',
        exposes: {
            './App': './src/App',
        },
        filename: 'remoteEntry.js',
        shared: {
            ...dependencies,
            react: {
                singleton: true,
                requiredVersion: dependencies.react,
            },
            'react-dom': {
                singleton: true,
                requiredVersion: dependencies['react-dom'],
            },
        },
    },
}

I am not able to get one child app helper minified js files (screenshot attached)

[chenjiahan]

Hi, can you provide a reproduction for this issue?

[capndave]

I work on a team with @ambujbpl. The problem was that both of the child applications were named "shared" in their package.json files. When the remoteEntry.js file for them was created, they provided conflicting information to the parent (module-federated) app. See here for more info.

If anyone sees similar weirdness, especially if they encounter a Cannot read properties of undefined (reading 'call') error, make sure the name values in each package.json are unique!