JavaScript app built with Claude Code? Let’s review it.
Expert code review for JavaScript apps built with Claude Code. We find Claude Code-specific bugs, fix JavaScript security issues, and optimize performance. From $19.
Claude Code issues we find in JavaScript projects
Problems specific to Claude Code's code generation patterns when building JavaScript apps.
Over-permissive CORS configuration
Claude Code sometimes sets CORS to allow all origins during development and forgets to restrict it for production, allowing any website to make API requests.
Missing rate limiting
API endpoints are generated without rate limiting, allowing attackers to brute-force auth endpoints or abuse expensive operations.
Over-engineered abstractions
Claude Code creates multiple layers of abstraction, generic utilities, and design patterns for simple problems — making the code harder to understand and maintain.
Edge cases in complex logic
While Claude handles the main flow well, complex conditional logic sometimes has edge cases that produce incorrect results with unusual inputs.
JavaScript issues we check for
Common JavaScript problems that affect production readiness.
Prototype pollution
AI-generated code merges user-supplied objects into prototypes via Object.assign or spread operators without sanitization, enabling property injection attacks.
Loose equality comparisons
Using == instead of === leads to type coercion bugs where '0' == false, null == undefined, and other non-obvious truthy/falsy comparisons cause silent logic errors.
Unhandled promise rejections
Async functions without try/catch or .catch() handlers cause unhandled rejection warnings and silent failures in production.
Global variable leaks
Missing 'const' or 'let' declarations create implicit globals that pollute the global scope and cause unpredictable behavior across modules.
Start with a self-serve audit
Get a professional review of your Claude Code JavaScript project at a fixed price.
External Security Scan
Black-box review of your public-facing app. No code access needed.
- OWASP Top 10 vulnerability check
- SSL/TLS configuration analysis
- Security header assessment
- Expert review within 24h
Code Audit
In-depth review of your source code for security, quality, and best practices.
- Security vulnerability analysis
- Code quality review
- Dependency audit
- Architecture review
- Expert + AI code analysis
Complete Bundle
Both scans in one package with cross-referenced findings.
- Everything in both products
- Cross-referenced findings
- Unified action plan
100% credited toward any paid service. Start with an audit, then let us fix what we find.
Frequently asked questions
Can you review JavaScript code generated by Claude Code?
Yes. We regularly audit JavaScript projects built with Claude Code and understand the specific patterns and issues it introduces. Our review covers security, performance, and deployment readiness.
What JavaScript issues does Claude Code typically create?
Common issues in Claude Code-generated JavaScript code include: over-permissive cors configuration, missing rate limiting, over-engineered abstractions. Combined with JavaScript-specific concerns like prototype pollution and loose equality comparisons.
How do I make my Claude Code JavaScript project production-ready?
Start with our code audit ($19) to get a prioritized list of issues. For Claude Code-built JavaScript projects, the typical path is: fix security gaps, address JavaScript-specific performance issues, then configure deployment. We provide a fixed quote after the audit.
How much does it cost to review Claude Code-generated JavaScript code?
Our code audit starts at $19 and covers security, performance, architecture, and deployment readiness. For fixes, our Fix & Ship plan is $199. Larger projects get a custom fixed quote — no hourly billing or surprises.
Related resources
Need help with your Claude Code JavaScript project?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.