[Bug]: Upgrade from 1.5.8 to 1.6.0 breaks module federation.

[skearney414]

System Info

System:
OS: Windows 11 10.0.22631
CPU: (20) x64 13th Gen Intel(R) Core(TM) i7-1370P
Memory: 1.99 GB / 31.66 GB
Binaries:
Node: 24.4.1 - C:\Program Files\nodejs\node.EXE
Yarn: 1.22.21 - C:\Users\Sean.Kearney\AppData\Roaming\npm\yarn.CMD
npm: 11.4.2 - C:\Program Files\nodejs\npm.CMD
pnpm: 9.12.2 - C:\Users\Sean.Kearney\AppData\Local\pnpm\pnpm.EXE
bun: 1.3.1 - C:\Users\Sean.Kearney.bun\bin\bun.EXE
Browsers:
Chrome: 141.0.7390.123
Edge: Chromium (140.0.3485.54)
Firefox: 139.0.4 - C:\Program Files\Mozilla Firefox\firefox.exe
Internet Explorer: 11.0.22621.3527

Details

Update to 1.6.0 causes module federation build to fail
● ━━━━━━━━━━━━━━━━━━━━━━━━━ (10%) building container entry (default) [["./AppShell",{"name":null,"import":["./microfrontendEntries/appShell.tsx"]}]error: script "build-serve" exited with code 5

Reproduce link

No response

Reproduce Steps

Add a baseline build with module federation. serve and it no longer works.

[skearney414]

This is my config

new rspack.container.ModuleFederationPlugin({
name: 'Financials.Shell',
library: { type: 'var', name: 'Financials_Shell' },
filename: 'remoteEntry.js',
exposes: {
'./AppShell': './microfrontendEntries/appShell.tsx',
'./ExportHandler': './microfrontendEntries/exportHandler.tsx',
'./IntercomButton': './microfrontendEntries/intercomButton.tsx',
'./ModuleFederationInitHandler': './microfrontendEntries/moduleFederationInitHandler.tsx',
'./CookieHandler': './microfrontendEntries/cookieHandler.tsx',
},
shared: {
react: { singleton: true, requiredVersion: '18.3.1' },
'react-dom': { singleton: true, requiredVersion: '18.3.1' },
'@access-erp/common': { singleton: true },
'@access-erp/ui-components': { singleton: true },
'@financials/graphql-api': { singleton: true },
'styled-components': { singleton: true },
'react-hook-form': { singleton: true },
'@financials/common': { singleton: true },
'@financials-core/transactions': { singleton: true },
'@apollo/client': { singleton: true },
'launchdarkly-react-client-sdk': { singleton: true },
graphql: { singleton: true },
'react-router': { singleton: true },
zod: { singleton: true },
yup: { singleton: true },
},
}),

[github-actions]

Hello @skearney414, sorry we can't investigate the problem further without reproduction demo, please provide a repro demo by forking rspack-repro, or provide a minimal GitHub repository by yourself. Issues labeled by need reproduction will be closed if no activities in 14 days.

[github-actions]

Since the issue was labeled with need reproduction, but no response in 14 days. This issue will be closed. Feel free to comment and reopen it if you have any further questions.