Deploy your JavaScript app to Railway
Step-by-step deployment help for JavaScript apps on Railway. We fix JavaScript-specific deployment issues, configure Railway, and get your app live. From $19.
JavaScript issues we fix before deploying
Common JavaScript problems that affect Railway deployments.
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.
Railway deployment issues we check for
Common Railway problems that break JavaScript apps in production.
Nixpacks detects the wrong build system
Monorepo projects or apps with multiple package managers confuse Nixpacks auto-detection, resulting in incorrect build commands and failed deployments.
Volume data lost on redeploy
AI-generated apps store uploaded files or SQLite databases on the filesystem without configuring Railway volumes, losing all data on each new deployment.
Private networking misconfigured between services
Internal service communication uses public URLs instead of Railway's private network (*.railway.internal), adding latency and exposing internal APIs publicly.
Health check endpoint missing
Railway restarts services that fail health checks. AI-generated servers often lack a /health endpoint, causing unnecessary restart loops.
Start with a self-serve audit
Get a professional review of your JavaScript project before deploying to Railway.
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
How do I deploy a JavaScript app to Railway?
We handle JavaScript deployments to Railway end to end. Start with our code audit ($19) to identify deployment blockers specific to your JavaScript project, then we configure Railway, fix issues, and get your app live in production.
What JavaScript issues affect Railway deployments?
JavaScript projects commonly have prototype pollution and loose equality comparisons. On Railway, these combine with nixpacks detects the wrong build system and volume data lost on redeploy to cause deployment failures.
Can SpringCode deploy my JavaScript project to Railway?
Yes. We specialize in deploying JavaScript applications to Railway. We audit your codebase for JavaScript-specific issues, configure Railway correctly, and handle the full deployment so your app runs reliably in production.
What does JavaScript deployment to Railway cost?
Our code audit ($19) identifies all Railway deployment blockers in your JavaScript project. Full deployment assistance is scoped with a fixed quote after the audit — no hourly billing or surprise charges.
Related resources
Other techs on Railway
Deploy JavaScript elsewhere
Need help deploying JavaScript to Railway?
Tell us about your project. We'll respond within 24 hours with a clear plan and fixed quote.