From idea to component: how a frontend feature comes to be

“We just need a search with filters.” From the outside, a request like that sounds like an hour of work. But in between lie a few deliberate steps that decide whether the feature only works in the demo or holds up in real, everyday use. Here is how a requirement turns into a finished component for me, using exactly such a product search as an example.

1. Understand before I build

The first work is not code, it is listening. What should the search really do? How many products, how many filters, what happens when there are no results? Will it mostly be used on a phone or on a desktop? Often there is a more important question behind “a search,” for example: how do customers find what they want to buy faster? That question shapes the result, not the technology.

2. The component: small and clear

Instead of one big search that does everything at once, I build small, clearly separated parts: the input field, the filter chips, the results list, the empty state. Each part has exactly one job and a meaningful name. For this I work with Vue and TypeScript: TypeScript catches many mistakes already while writing, long before a user ever sees them. Small parts can also be reused later and checked individually.

3. Test what matters

Once the logic is in place, I secure it with automated tests, especially the uncomfortable cases: what happens with zero results, with very many, with several filters active at once? These tests are the safety net for later (more on this in My code, my responsibility). They cost a little time up front and save it many times over on every later change.

4. Go live, but in control

In the end it gets built, reviewed and shipped, in small, traceable steps rather than one big launch. I look at the feature on real devices, not just in the developer browser, and keep an eye on it after release to see whether it behaves as intended. If something stands out, it gets fixed before it becomes a problem.

From the outside, all you see in the end is: “The search works.” The real work is making sure it still works in a year, and with ten times as many products.

If you have a frontend feature in mind and are wondering how to build it cleanly, feel free to reach out.