chenyangjun-xy a152a45284 fix(usage-bar): bound template file cache to prevent unbounded watche… (#98990) ...

* fix(usage-bar): bound template file cache to prevent unbounded watcher growth

Add MAX_CACHED_TEMPLATE_FILES=64 limit; evict the oldest entry (closing
its fs.watch watcher) before allocating a watcher for a new key when
the cache is full.

Eviction runs before watcher allocation so we never create a watcher
only to close it immediately. Eviction triggers only when inserting a
new key (!fileCache.has(path)) — retries for an existing key must
not evict other entries.

Fixes #98960

Co-Authored-By: Claude <noreply@anthropic.com>

* refactor(test): replace mutable dir variable with cleanup-stack pattern in template.test.ts

Co-Authored-By: Claude <noreply@anthropic.com>

* chore(test): add curly braces for eslint curly rule

Co-Authored-By: Claude <noreply@anthropic.com>

* test(usage-bar): register watcher proof cleanup

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Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Vincent Koc <vincentkoc@ieee.org>

2026-07-06 01:21:32 -07:00

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