LibreChat/packages/api/src/middleware/index.ts
Danny Avila 6169d4f70b
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🚦 fix: 404 JSON Responses for Unmatched API Routes (#11976)
* feat: Implement 404 JSON response for unmatched API routes

- Added middleware to return a 404 JSON response with a message for undefined API routes.
- Updated SPA fallback to serve index.html for non-API unmatched routes.
- Ensured the error handler is positioned correctly as the last middleware in the stack.

* fix: Enhance logging in BaseClient for better token usage tracking

- Updated `getTokenCountForResponse` to log the messageId of the response for improved debugging.
- Enhanced userMessage logging to include messageId, tokenCount, and conversationId for clearer context during token count mapping.

* chore: Improve logging in processAddedConvo for better debugging

- Updated the logging structure in the processAddedConvo function to provide clearer context when processing added conversations.
- Removed redundant logging and enhanced the output to include model, agent ID, and endpoint details for improved traceability.

* chore: Enhance logging in BaseClient for improved token usage tracking

- Added debug logging in the BaseClient to track response token usage, including messageId, model, promptTokens, and completionTokens for better debugging and traceability.

* chore: Enhance logging in MemoryAgent for improved context

- Updated logging in the MemoryAgent to include userId, conversationId, messageId, and provider details for better traceability during memory processing.
- Adjusted log messages to provide clearer context when content is returned or not, aiding in debugging efforts.

* chore: Refactor logging in initializeClient for improved clarity

- Consolidated multiple debug log statements into a single message that provides a comprehensive overview of the tool context being stored for the primary agent, including the number of tools and the size of the tool registry. This enhances traceability and debugging efficiency.

* feat: Implement centralized 404 handling for unmatched API routes

- Introduced a new middleware function `apiNotFound` to standardize 404 JSON responses for undefined API routes.
- Updated the server configuration to utilize the new middleware, enhancing code clarity and maintainability.
- Added tests to ensure correct 404 responses for various non-GET methods and the `/api` root path.

* fix: Enhance logging in apiNotFound middleware for improved safety

- Updated the `apiNotFound` function to sanitize the request path by replacing problematic characters and limiting its length, ensuring safer logging of 404 errors.

* refactor: Move apiNotFound middleware to a separate file for better organization

- Extracted the `apiNotFound` function from the error middleware into its own file, enhancing code organization and maintainability.
- Updated the index file to export the new `notFound` middleware, ensuring it is included in the middleware stack.

* docs: Add comment to clarify usage of unsafeChars regex in notFound middleware

- Included a comment in the notFound middleware file to explain that the unsafeChars regex is safe to reuse with .replace() at the module scope, as it does not retain lastIndex state.
2026-02-27 22:49:54 -05:00

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TypeScript

export * from './access';
export * from './admin';
export * from './error';
export * from './notFound';
export * from './balance';
export * from './json';
export * from './concurrency';