How do you keep your code maintainable in long-term web projects?

I don't really do anything special for maintainability, and that’s why I can’t get fired! But seriously, in a team environment, it’s helpful to use familiar frameworks and libraries. If the code structure is standard and everything is modular, it allows others to easily read and understand it without much trouble. Solid documentation can help, but organization is key.

Having a sensible architecture is crucial. Start with a good foundation of global types and core APIs to build upon. Always abstract third-party code to avoid maintenance issues affecting other parts of the project. Don’t just dive into using external packages without thorough evaluation.

I believe in minimizing the use of classes and services in favor of functional programming. It makes the code more readable for both people and machines. By passing state as function parameters, the code becomes easier to test. Also, I advocate for fewer libraries on your project—less code is better than more. If possible, using functional programming languages can significantly simplify the codebase, making refactoring much easier.

I get how legacy code can become a burden on a project. I prioritize consistent coding standards and active code reviews over extensive documentation. Documentation can become outdated unless someone actively maintains it. When considering new tech, I always ask if it simplifies the team’s mental model or just adds complexity. Regular testing and small continuous refactors are what save us in the long run—big rewrites can lead to more chaos than resolution. Just curious, what type of projects are you tackling? Team size and project scope can really change things up.

After working on multiple React/Next.js projects, we found a few strategies that work: using TypeScript everywhere pays off quickly, and we colocate documentation with code instead of keeping it separate. The testing strategy is significant—focus on unit and integration tests rather than just chasing high coverage numbers. Also, maintaining strict patterns prevents architectural drift. We dedicate some sprint time for refactoring to handle tech debt gradually, which keeps everything running smoothly and the team happy. Team culture is key too; if code reviews are seen as learning opportunities, better quality tends to follow naturally.

Always apply the rule of least power and resist the temptation to rely on shortcuts like installing tons of packages to solve issues. Keep it simple to ensure your code remains manageable.