[WIP] Enhance Error Handling: Centralized File Access and Response Utilities

[utukku77]

Enhance Error Handling: Centralized File Access and Response Utilities

Description

Summary of Work

This pull request introduces a comprehensive error handling system for file-related operations, improving application robustness and providing consistent error responses.

Key Improvements

• Added TypeScript middleware for file access error handling
• Created a centralized error response utility
• Implemented standardized error logging and reporting
• Enhanced type safety and error management

Motivation

To provide a more reliable and predictable error handling mechanism across the application, with special focus on file access and CDN resource interactions.

Changes Made

1. Introduced FileAccessError custom error class in TypeScript
2. Implemented fileErrorHandler middleware for express
3. Added checkFileAccess utility function to safely validate file permissions
4. Created createErrorResponse and createErrorLog utilities in error-response.js
5. Defined standardized ERROR_TYPES for consistent error reporting

Tests and Verification

• Verified middleware error handling scenarios
• Tested file access permission checks
• Validated error response generation
• Ensured proper error type mapping
• Confirmed TypeScript type safety

PRs Merged

The following pull requests have been merged:

Signatures

Staking Key

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Public Key

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