JavaScript app built with Replit Agent? Let’s review it.
Expert code review for JavaScript apps built with Replit Agent. We find Replit Agent-specific bugs, fix JavaScript security issues, and optimize performance. From $19.
Replit Agent issues we find in JavaScript projects
Problems specific to Replit Agent's code generation patterns when building JavaScript apps.
Secrets stored in Replit environment
API keys and credentials stored in Replit's secrets manager don't transfer when you export the project. Developers often hardcode them as a workaround, creating security risks.
No HTTPS or security headers
Replit's development environment doesn't enforce HTTPS or set security headers. Apps deployed without proper configuration are vulnerable to man-in-the-middle attacks.
Database connection instability
Replit's hosted databases can disconnect unexpectedly. Without connection pooling and retry logic, apps crash or lose data during these interruptions.
File system assumptions
Replit Agent sometimes writes to the file system assuming persistent storage, which breaks on containerized or serverless deployments.
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 Replit Agent 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 Replit Agent?
Yes. We regularly audit JavaScript projects built with Replit Agent and understand the specific patterns and issues it introduces. Our review covers security, performance, and deployment readiness.
What JavaScript issues does Replit Agent typically create?
Common issues in Replit Agent-generated JavaScript code include: secrets stored in replit environment, no https or security headers, database connection instability. Combined with JavaScript-specific concerns like prototype pollution and loose equality comparisons.
How do I make my Replit Agent JavaScript project production-ready?
Start with our code audit ($19) to get a prioritized list of issues. For Replit Agent-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 Replit Agent-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 Replit Agent JavaScript project?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.