Building a e-commerce store with JavaScript? Let us review it.
Expert code review for e-commerce stores built with JavaScript. We fix JavaScript-specific security gaps, optimize performance, and handle deployment. From $19.
Common JavaScript issues we find
Real problems from JavaScript codebases we've reviewed.
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.
E-Commerce Store challenges to solve
Key e-commerce store concerns that AI-generated code often misses.
Payment security and PCI compliance
You're handling credit card transactions. While Stripe and similar services handle PCI compliance on their end, your integration must not expose card data, must verify webhook signatures, and must handle failed payments gracefully.
Inventory management
What happens when two customers buy the last item simultaneously? AI tools don't implement inventory locking or race condition prevention. Overselling damages trust and creates costly fulfillment problems.
Order processing pipeline
Orders move through states: pending, confirmed, processing, shipped, delivered. Each transition triggers actions (emails, inventory updates, accounting entries). AI tools build the checkout but not the order lifecycle.
Shipping and tax calculation
Real shipping costs vary by weight, destination, and carrier. Sales tax varies by jurisdiction. These calculations need to be accurate and up-to-date — getting them wrong is either illegal (tax) or margin-killing (shipping).
What we check
Key areas we review for JavaScript e-commerce store projects.
Payment integration — Stripe checkout, webhook verification, refund handling
Inventory management — stock tracking, oversell prevention
Order lifecycle — state machine, status emails, admin management
Security — PCI best practices, data protection, auth on admin routes
Not sure if your app passes? Our code audit ($19) checks all of these and more.
Start with a self-serve audit
Get a professional review of your JavaScript e-commerce store 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
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 review a e-commerce store built with JavaScript?
Yes. We regularly audit JavaScript e-commerce store projects and understand the specific patterns and pitfalls of this combination. Our review covers security, performance, and deployment readiness.
What issues do you find in JavaScript e-commerce stores?
Common issues include prototype pollution and loose equality comparisons on the JavaScript side, combined with e-commerce store-specific concerns like payment security and pci compliance and inventory management. We check for all of these and more.
How do I make my JavaScript e-commerce store production-ready?
Start with our code audit ($19) to get a prioritized list of issues. For JavaScript e-commerce store projects, the typical path is: fix security gaps, address e-commerce store-specific requirements, optimize JavaScript performance, then configure deployment. We provide a fixed quote after the audit.
How long does it take to audit a JavaScript e-commerce store?
Our code audit delivers a full report within 24 hours. For JavaScript e-commerce store projects, we check security, architecture, performance, and deployment readiness across all JavaScript-specific patterns. Fixes are scoped separately with a fixed quote.
Related resources
JavaScript by Use Case
Need help with your JavaScript e-commerce store?
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