From 20a304fc365191fc94d2cc469f6c890fe3526bfe Mon Sep 17 00:00:00 2001
From: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Date: Wed, 8 Jul 2026 17:56:36 +0000
Subject: [PATCH] Trust cached null entry augmentation in range path (!==
 undefined)

The range-augmentation path used ?? , so a legitimately-cached null
augmentation was treated as a miss and re-extracted. Match make()'s
!== undefined check so null-augmentation entries hit the cache.

Co-Authored-By: Konstantin Wohlwend <n2d4xc@gmail.com>
---
 .../piledriver/data-structures/augmented-tree-map.ts      | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/apps/bulldozer-js/src/databases/piledriver/data-structures/augmented-tree-map.ts b/apps/bulldozer-js/src/databases/piledriver/data-structures/augmented-tree-map.ts
index ddaef6fd2..d51ee23b1 100644
--- a/apps/bulldozer-js/src/databases/piledriver/data-structures/augmented-tree-map.ts
+++ b/apps/bulldozer-js/src/databases/piledriver/data-structures/augmented-tree-map.ts
@@ -637,8 +637,12 @@ export class AugmentedTreeMultiMap<Key extends PiledriverObject, Value extends P
     for (let i = 0; i < node.entries.length; i++) {
       result = await this.merge(result, await this.augmentation(node.children[i] ?? null, range));
       if (aboveLowerBound(node.entries[i][0]) && belowUpperBound(node.entries[i][0])) {
-        const entryAug = ((node.version ?? 0) >= 1 ? node.entryAugmentations?.[i] : undefined)
-          ?? await this.options.extractAugmentation(await this.loadValue(node.entries[i][1]), node.entries[i][0].key, node.entries[i][0].id);
+        // Trust the cached augmentation only for versioned nodes, and check `!== undefined` (not
+        // `??`) so a legitimately-cached `null` augmentation is still a hit rather than re-extracted.
+        const cachedEntryAug = (node.version ?? 0) >= 1 ? node.entryAugmentations?.[i] : undefined;
+        const entryAug = cachedEntryAug !== undefined
+          ? cachedEntryAug
+          : await this.options.extractAugmentation(await this.loadValue(node.entries[i][1]), node.entries[i][0].key, node.entries[i][0].id);
         result = await this.merge(result, entryAug);
       }
     }