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refactor(@angular/build): guard closed chokidar operations and remove v5 unlink workaround - #34471
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This pull request simplifies the Chokidar file watcher implementation by removing complex baseline and unlink logic, and adds safety checks to prevent errors when adding or removing paths after the watcher is closed. The review feedback correctly points out that 'auto' is not a supported value for Chokidar's backend option and suggests using undefined instead to let Chokidar automatically select the appropriate backend.
… v5 unlink workaround Chokidar 6 makes `FSWatcher.close()` terminal, throwing synchronously if `watcher.add()` is called once closing has started. Guard `add()`, `remove()`, `scheduleBaselineCheck()`, and `checkChokidarBaselines()` against `watcher.closed`, and clear tracked file state when the watcher is closed. Additionally, replace the deprecated `usePolling` and `interval` Chokidar options with `backend` and `pollingInterval`. Remove the Chokidar 5 `unlink` re-watch workaround and its corresponding baseline check branch, as Chokidar 6 natively awaits recreated paths from their nearest existing ancestor across all watched directories.
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Chokidar 6 makes
FSWatcher.close()terminal, throwing synchronously ifwatcher.add()is called once closing has started. Guardadd(),remove(),scheduleBaselineCheck(), andcheckChokidarBaselines()againstwatcher.closed, and clear tracked file state when the watcher is closed.Additionally, replace the deprecated
usePollingandintervalChokidar options withbackendandpollingInterval. Remove the Chokidar 5unlinkre-watch workaround and its corresponding baseline check branch, as Chokidar 6 natively awaits recreated paths from their nearest existing ancestor across all watched directories.