Testing for your Claude Code-built JavaScript app
Expert testing for JavaScript apps built with Claude Code. We audit Claude Code-generated JavaScript code for testing issues. 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.
JavaScript testing issues we check for
Testing-specific JavaScript problems that need attention before production.
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.
What our testing covers
Everything included when we testing your Claude Code JavaScript project.
Start with a self-serve audit
Get a professional testing 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.
How it works
Three steps to get your Claude Code JavaScript app production-ready.
Tell us about your app
Share your project details and what you need help with.
Expert + AI audit
A human expert assisted by AI reviews your code within 24 hours.
Launch with confidence
We fix what needs fixing and stick around to help.
Frequently asked questions
Can you testing my Claude Code-built JavaScript app?
Yes. We regularly handle testing for JavaScript projects built with Claude Code. We understand Claude Code's code patterns and the specific JavaScript issues they introduce. Our review covers the full stack from frontend to backend.
What JavaScript testing issues does Claude Code typically create?
Common testing issues in Claude Code-generated JavaScript code include: over-permissive cors configuration, missing rate limiting, over-engineered abstractions. On the JavaScript side, we often find: prototype pollution, loose equality comparisons, unhandled promise rejections.
How much does testing cost for a Claude Code JavaScript project?
Start with our $19 automated audit to get a prioritized list of issues. For hands-on testing work on Claude Code-built JavaScript projects, we provide a fixed quote after reviewing the audit results. No surprises.
Related resources
Other JavaScript Technologies
Other Claude Code JavaScript Services
Get testing for your Claude Code JavaScript app
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.