nodejs-best-practices

Implement centralized error handling in Node.js by using custom error classes and mapping them to consistent HTTP responses. This pattern reduces debugging time by catching errors at the application boundary instead of scattering try-catch blocks.

Validate environment variables and input in a Node.js API by running startup environment checks and using modern validation libraries like Zod. This fail-fast approach prevents runtime errors caused by missing or malformed configuration data.

Yes, this Node.js best practices guidance works with Fastify and NestJS. It targets API backend projects across frameworks like Express, Hono, NestJS, and Prisma-based data layers for review and refactor workflows.

Apply security hygiene patterns to a Node.js backend by implementing rate limiting, helmet, parameterized queries, and JWT verification. These patterns protect against brute force attacks, header injection, SQL injection, and unauthorized access.

Audit an existing Node.js project against best practices by reviewing its architectural drift, error handling, validation, and security hygiene. Use the provided guidelines to refactor the project structure and enforce consistent module boundaries.