Node.js code audit
JavaScript apps grow fast, often inherited, rushed to launch, or partly written by AI. We review your Node.js back end, Next.js or React front end, and TypeScript against the problems these apps actually have, and tell you in plain English which ones matter and what to fix first.
Every Node.js audit covers the eight areas in every code audit, plus checks written for Node.js, Next.js, React, and TypeScript.
API routes, server actions, and route handlers that skip authorization, lookups that aren’t scoped to the signed-in user, sign-in checked only in middleware, and permissions enforced only in the UI.
JWT verification, cookie and CORS settings, password hashing, rate limits on sign-in, and API keys shipped to the browser in the client bundle or a NEXT_PUBLIC_ variable.
Request bodies used without validation, SQL and NoSQL injection through raw queries, unsafe file paths and uploads, server-side request forgery, prototype pollution, and dangerouslySetInnerHTML.
Multi-step writes without transactions, schema sync instead of migrations in production, money stored as floating point, webhooks that skip signature checks, and types that don’t match what’s really in the data.
Work that blocks the event loop, N+1 queries, connection pooling, outbound calls without timeouts, accidental dynamic rendering and caching surprises in Next.js, and oversized React bundles.
Whether your Node.js and Next.js versions still get security fixes, React and TypeScript versions that drift apart, abandoned packages, and how strict your TypeScript really is.
Every audit runs npm audit, OSV-Scanner, Semgrep, ESLint, and the TypeScript compiler against your code, but scanners only find the patterns they know. The findings that hurt most in JavaScript apps are usually ones a scanner can’t see:
Those come from reading the code, not from a scan.
Three levels, each a fixed fee. Essentials covers the most important Node.js and Next.js checks; Standard and Comprehensive cover all of them. See everything every audit includes.
A fast health check
$1,000 fixed fee
Best for: Answering "is this codebase OK?" before you buy, hire, or launch.
A thorough review
$1,500 fixed fee
Best for: An inherited codebase, a pre-launch review, or before hiring a team.
Everything in Essentials, plus:
Due diligence depth
$2,500 fixed fee
Best for: Acquisitions and technical due diligence, compliance preparation, or after an incident.
Everything in Standard, plus:
Node.js supports each even-numbered LTS line for about two and a half years, and Next.js supports each major for about two years, so many apps are running versions that no longer get security fixes. Every Node.js audit checks your Node.js and Next.js versions against the official schedules, and that the same Node.js version is pinned everywhere it runs.
If you’re behind, the report lays out the upgrade step by step, along with the React, TypeScript, and package changes that come with it. When you’re ready, we can do the upgrade too.
Checked November 13, 2026 against the Node.js release schedule.
Follows federal and state grant opportunities and tells you on your phone about new matches, moved deadlines and amended notices, with AI summaries of long notices. Android and iOS apps, with a web admin area.
Pick a job and a place to see what it pays, from the Bureau of Labor Statistics' wage data, where your own pay falls, and which local jobs pay the wage you want.
The same fixed fees as every audit: $1,000 for Essentials, $1,500 for Standard, and $2,500 for Comprehensive. Compare the levels. Hire us for hourly development within 30 days of your report and up to $1,000 of the fee comes off your first invoice.
Yes. Every Node.js code audit includes a security audit: data access, sign-in, sessions, secrets, injection, file uploads, and webhooks, plus npm audit, OSV-Scanner, and Semgrep scans of your code and packages.
Yes. Next.js apps get their own checks: authorization in every server action and route handler, data that leaks from server to client components, cached pages served to the wrong user, and the caching rules for your version. Apps on the Pages Router, or halfway between, get the same review.
Yes. A React app gets its own checks whatever it talks to: secrets in the bundle, where tokens are stored, permissions enforced only in the UI, and performance. If the back end is Rails, Laravel, or Python, it can be part of the audit too.
Essentials reviews the code without running it. Standard and Comprehensive boot your app and run your tests in an isolated, disposable environment. Either way, we never connect to your production servers, databases, or accounts.
Yes. We can work alongside your team or take it on ourselves, and the audit credit applies.
Tell us about your app and we'll recommend the level that fits.
