Summary

In this chapter, we planned our app and got comfortable previewing and debugging it. Both of these steps are vital to creating a good developer experience. First of all, we do not want to face any major surprises – that’s why we want to plan ahead. You could compare this to how a building is built. No self-respecting construction worker would start setting up walls and doors before making, or at least looking at, a blueprint. We, as software developers, are building a digital product and not a building, but we’re using the word “to build” for very good reasons.

Second of all, we need to know how to check whether what we’re writing is actually working. Your code may look logical to you, but that does not mean that it will work after JavaScript tries to understand your logic. That is why every web developer has a browser window open while working, and why a mobile app developer needs to look at a phone or a phone simulator. Since we...