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fix(community): possible race condition on FileSystemChatMessageHistory #9436

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Merged
christian-bromann merged 4 commits into from
Dec 5, 2025
Merged

fix(community): possible race condition on FileSystemChatMessageHistory #9436

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17ef37c
fix(community): possible race condition
sinedied Nov 18, 2025
7d5c792
chore: add changeset
sinedied Nov 18, 2025
e1ba3fa
Merge branch 'main' into fix-race-condition
sinedied Dec 1, 2025
411df8f
Merge branch 'main' into fix-race-condition
sinedied Dec 4, 2025
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5 changes: 5 additions & 0 deletions .changeset/crisp-kiwis-end.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"@langchain/community": patch
---

Fix possible race condition in FileSystemChatMessageHistory
1 change: 0 additions & 1 deletion libs/langchain-community/src/stores/message/file_system.ts
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Expand Up @@ -113,7 +113,6 @@ export class FileSystemChatMessageHistory extends BaseListChatMessageHistory {

protected async loadStore(): Promise<FileChatStore> {
try {
await fs.access(this.filePath, fs.constants.F_OK);
const store = await fs.readFile(this.filePath, "utf-8");
return JSON.parse(store) as FileChatStore;
} catch (_error) {
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