Function enforceCacheLimit

src/ui/diff/useHighlightedDiff.ts:20–27

Evict the oldest entries when the cache exceeds MAX_CACHE_ENTRIES. * Map iteration order is insertion order, so the first keys are the oldest.

()

/** Evict the oldest entries when the cache exceeds MAX_CACHE_ENTRIES.
 *  Map iteration order is insertion order, so the first keys are the oldest. */
function enforceCacheLimit() {
  while (SHARED_HIGHLIGHTED_DIFF_CACHE.size > MAX_CACHE_ENTRIES) {
    const oldest = SHARED_HIGHLIGHTED_DIFF_CACHE.keys().next().value;
    if (oldest !== undefined) {
      SHARED_HIGHLIGHTED_DIFF_CACHE.delete(oldest);
    }
  }
}

/** Summarize rendered diff lines without serializing whole arrays into the cache key. */
function lineSetFingerprint(lines: string[] | undefined) {