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perf: Optimize Collection.equals() to reduce redundant map lookups (#11344)

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* Initial plan

* Optimize Collection.equals() to avoid redundant map lookups

Co-authored-by: iCrawl <20760160+iCrawl@users.noreply.github.com>

* Add explanatory comment for equals() undefined check optimization

Co-authored-by: iCrawl <20760160+iCrawl@users.noreply.github.com>

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: iCrawl <20760160+iCrawl@users.noreply.github.com>
Co-authored-by: Almeida <github@almeidx.dev>
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>
This commit is contained in:
Copilot
2025-12-09 21:22:14 +00:00
committed by GitHub
parent 6a129bc054
commit 548d75258b
2 changed files with 22 additions and 1 deletions
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6
packages/collection/src/collection.ts
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@@ -822,7 +822,11 @@ export class Collection<Key, Value> extends Map<Key, Value> {
if (this === collection) return true;
if (this.size !== collection.size) return false;
for (const [key, value] of this) {
if (!collection.has(key) || value !== collection.get(key)) {
const otherValue = collection.get(key);
// If values differ, collections aren't equal.
// For undefined values, we must also verify the key exists in the other collection,
// since get() returns undefined for both missing keys and keys with undefined values.
if (otherValue !== value || (otherValue === undefined && !collection.has(key))) {
return false;
}
}