Security & Code Audit for TypeScript Projects

CodeAudit.dev checks your TypeScript codebase for the vulnerabilities, performance issues, and architecture problems most common to TypeScript applications.

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Common TypeScript Issues

Extensive use of 'any' defeating type safety

Unsafe type assertions ('as Type')

Missing 'strict' mode in tsconfig.json

Inconsistent error typing in catch blocks

Implicit any in function parameters

Missing return types on complex functions

Misuse of non-null assertions ('!')

Example Finding

[Medium]

Unsafe Type Assertion Bypassing Validation

An object is being forcefully cast to a type using the 'as' keyword without verifying its shape at runtime. If the underlying data changes (e.g., from an API response), this will cause unexpected crashes.

Fix:Replace the type assertion with a runtime validation library like Zod or custom type guards to ensure the data matches the expected structure before processing.

Why TypeScript Projects Need Specialized Checks

TypeScript is phenomenal for developer experience, but it only provides compile-time guarantees. Relying heavily on 'any', forceful type casting, or skipping strict mode creates a false sense of security where runtime errors still occur. CodeAudit helps you maximize TypeScript's value by catching unsafe patterns and ensuring your types align with reality.

Frequently Asked Questions

Can CodeAudit help me migrate to strict mode?

Yes. We highlight the most critical areas where types are missing or unsafe, giving you a prioritized path to enabling strict mode.

Does it check my tsconfig.json?

Yes. We review your TypeScript compiler options to ensure security and performance best practices are enabled.

Ready to secure your TypeScript app?

Join the waitlist to get early access to CodeAudit.dev and make sure your code is production-ready.

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