How Do You Keep Code Maintainable in Long-Term Web Projects?

I don't focus on maintainability, and somehow I still manage to stay employed! Joking aside, in collaborative teams, using familiar frameworks and libraries while keeping custom components tidy is key. Solid documentation helps, but if you set things up in a modular fashion and follow conventional flows, it makes it easier for others to navigate the code and maintain it.

After managing numerous long-term React/Next.js projects, I've noticed several best practices: First, using TypeScript has been invaluable; it pays off quickly by making refactoring safer. Second, I suggest colocating documentation with your code—this way, answers to why things are done a certain way are right where they belong. Third, focus on quality testing, not just high coverage percentages. Lastly, fostering a team culture where code reviews are seen as educational rather than just a gatekeeping process really helps maintain quality. We also dedicate part of each sprint to tech debt, which keeps our codebase healthy.

Always strive to use less powerful tools. Avoid the temptation to just install a package to fix your issues.

I believe sensible architecture and clear separation of concerns are most important. Focus on creating a solid foundation with global type definitions and core APIs. By abstracting third-party code, you ensure that maintenance won’t disrupt the rest of your system.

I push for more functional programming in our codebase, dialing back on classes and services when possible. The idea is that it makes the code more readable and testable since the state is passed as function parameters rather than spread across different places. Fewer libraries mean less complex code, and functional programming languages make refactoring easier!