Lately I’ve been spending a lot of time working on UI components, especially things like modals, and it keeps reinforcing the same lesson over and over. Reusable and scalable UI components are not just a nice-to-have. They are a requirement if you want an application to grow without becoming a nightmare to maintain.

Modals are a great example. On the surface, they seem simple. A container, some content, maybe a close button. But once an app grows, you quickly realize how many different places need them. Forms, confirmations, warnings, previews, settings. If each one is built slightly differently, things fall apart fast.

What I’ve learned is that investing time early into one solid modal component pays off immediately. A reusable modal gives you:

  • Consistency across the entire application
  • Faster development when new features need dialogs
  • Cleaner code with less duplication
  • Easier updates when designs or behavior change

Scalability is the real win here. When your modal supports slots, props, and predictable behavior, it adapts to new use cases without needing to be rewritten. The same idea applies to buttons, inputs, alerts, and layout components. Build them once, build them right, and let them carry the weight of the app.

In my experience, reusable UI components change how you think about development. You stop hacking things together and start designing systems. The codebase feels calmer. Features feel easier to add. And future you spends a lot less time fixing avoidable problems.

Small components. Big impact. 🧠💡