fix(@angular/build): inherit preserveSymlinks option from build target in unit-test builder#33452
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…t in unit-test builder The unit-test builder did not pass the preserveSymlinks configuration to Vitest's custom configuration plugin and resolved it directly from buildTargetOptions in Karma executor without considering process arguments. This caused module resolution failures in unit tests for symlinked packages. This change inherits preserveSymlinks from the referenced buildTarget options, falling back to process.execArgv if not defined. The resolved value is then successfully forwarded to the underlying bundlers and executors (Karma and Vitest).
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This pull request adds support for the preserveSymlinks option in the unit-test builder. It resolves the option from either the build target options or the process execution arguments, and propagates it to both the Karma and Vitest test runners, ensuring consistent symlink resolution behavior during testing. I have no feedback to provide as there are no review comments.
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Jun 25, 2026
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The unit-test builder did not pass the preserveSymlinks configuration to Vitest's custom configuration plugin and resolved it directly from buildTargetOptions in Karma executor without considering process arguments. This caused module resolution failures in unit tests for symlinked packages.
This change inherits preserveSymlinks from the referenced buildTarget options, falling back to process.execArgv if not defined. The resolved value is then successfully forwarded to the underlying bundlers and executors (Karma and Vitest).