extractLicenses crashes with "Cannot read properties of undefined (reading 'trim')" when using Module Federation shared modules with webpack >= 5.107 #34360

Command

build

Is this a regression?

• Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

21.x (with webpack <= 5.106.2)

Description

@angular-devkit/build-angular:browser production builds that use Module Federation shared modules (for example, via @angular-architects/module-federation) crash when extractLicenses is true.

The crash comes from license-webpack-plugin 4.0.2, a dependency of @angular-devkit/build-angular. webpack 5.107.0 (webpack/webpack#20860) changed ProvideSharedModule.identifier() from provide module (scope) name@version = request to provide module (scope) name@version|request. The plugin still parses the identifier with filename.split('=')[1].trim() (dist/WebpackInnerModuleIterator.js), which throws.

@angular-devkit/build-angular 22.2.x depends on webpack 5.111.0, so every Module Federation app on the webpack builder is affected unless it disables extractLicenses (and so loses 3rdpartylicenses.txt).

license-webpack-plugin has had no commits since 2023. I reported the bug there as well: .

Possible actions:

• patch, fork or vendor license-webpack-plugin in @angular-devkit/build-angular, or
• guard the provide module case (the fix is a few lines, see the linked issue).

Minimal Reproduction

1. ng new mf-app (Angular 22), then ng add @angular-architects/module-federation --type host.
2. Make sure webpack.config.js declares at least one shared package (the default shareAll(...) is enough).
3. ng build --configuration production (with extractLicenses: true, the default for production).

Exception or Error

- Generating browser application bundles (phase: setup)...
✔ Browser application bundle generation complete.
An unhandled exception occurred: Cannot read properties of undefined (reading 'trim')

Your Environment

Angular CLI: 22.2.x
Node: 24.21.0
@angular-devkit/build-angular: 22.2.2
@angular-architects/module-federation: 22.0.0
webpack: 5.111.0
license-webpack-plugin: 4.0.2
OS: Linux

Anything else relevant?

Workaround: apply the fix to license-webpack-plugin with patch-package. Setting "extractLicenses": false also avoids the crash, but then no license file is generated.