fix(@angular/build): allow vitest-based unit testing to use watch option #30275
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When using the `application` build system with the experimental `unit-test` vitest support, the `watch` option will now be passed through to the underlying test runner. This allows vitest to be used for watch-based test development. Incremental test file updates from the build system are also enabled in watch mode as well to remove the need to rewrite all output files on a rebuild.
When using the experimental `unit-test` builder with `vitest` as the runner, an error message will now be shown if the `vitest` package cannot be loaded. The error message includes a suggestion to install the package if not present.
jkrems
approved these changes
May 8, 2025
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The changes were merged into the following branches: main, 20.0.x |
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When using the
applicationbuild system with the experimentalunit-testvitest support, thewatchoption will now be passed through to the underlying test runner. This allows vitest to be used for watch-based test development. Incremental test file updates from the build system are also enabled in watch mode as well to remove the need to rewrite all output files on a rebuild.