fix(@angular-devkit/build-angular): externalize Angular dependencies in Vitest runner #31600
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…in Vitest runner Marks common Angular packages and RxJS as external within the Vitest test runner's build configuration. This allows Vite to perform dependency pre-bundling on these libraries, which can significantly improve build and rebuild performance during test execution. The implementation introduces a constant to hold the list of packages and merges them with any externalDependencies that may already exist in the base build options, preserving user configuration.
jkrems
approved these changes
Oct 25, 2025
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Marks common Angular packages and RxJS as external within the Vitest test runner's build configuration. This allows Vite to perform dependency pre-bundling on these libraries, which can significantly improve build and rebuild performance during test execution.
The implementation introduces a constant to hold the list of packages and merges them with any externalDependencies that may already exist in the base build options, preserving user configuration.