JavaScript app built with Supermaven? Let’s review it.
Expert code review for JavaScript apps built with Supermaven. We find Supermaven-specific bugs, fix JavaScript security issues, and optimize performance. From $19.
Supermaven issues we find in JavaScript projects
Problems specific to Supermaven's code generation patterns when building JavaScript apps.
Fast completions accepted without review introduce subtle type errors
Supermaven's speed is its core advantage, but it encourages accepting completions quickly. TypeScript type errors, incorrect function signatures, and wrong argument orders frequently slip through when developers tab-accept completions at high speed.
Security-sensitive code patterns completed without security review
In security-critical code paths like authentication, token validation, and database queries, Supermaven's completions can introduce subtle vulnerabilities — such as completing a SQL query without parameterization or missing a signature verification step.
Existing codebase anti-patterns replicated across new files at high velocity
Supermaven learns from your codebase, which means bad patterns — deprecated APIs, insecure functions, or architectural mistakes — get propagated to new code rapidly due to how quickly completions are accepted.
Test completions mirror happy-path structure without edge case coverage
When completing test code, Supermaven tends to replicate the structure of surrounding tests, which often means test completions also omit edge cases, error paths, and boundary conditions that the surrounding tests miss.
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 Supermaven 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 Supermaven?
Yes. We regularly audit JavaScript projects built with Supermaven and understand the specific patterns and issues it introduces. Our review covers security, performance, and deployment readiness.
What JavaScript issues does Supermaven typically create?
Common issues in Supermaven-generated JavaScript code include: fast completions accepted without review introduce subtle type errors, security-sensitive code patterns completed without security review, existing codebase anti-patterns replicated across new files at high velocity. Combined with JavaScript-specific concerns like prototype pollution and loose equality comparisons.
How do I make my Supermaven JavaScript project production-ready?
Start with our code audit ($19) to get a prioritized list of issues. For Supermaven-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 Supermaven-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 Supermaven JavaScript project?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.