September 2025
Intermediate to advanced
206 pages
5h 50m
English
Content preview from Building Web Apps with Bolt
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Chapter 4. Fixes, Checkpoints, and Rollbacks
No development journey is without its detours and bumps in the road. As you build apps with Bolt, there will be times when you need to correct mistakes, improve what’s already there, or even backtrack on a change that didn’t work out. The good news is that Bolt provides tools to manage these situations gracefully.
In this chapter, I’ll explore how to fix issues and refine your app, how to use checkpoints and rollbacks to navigate through different versions of your project, and how all this fits into an iterative development process. By understanding these features, you’ll gain confidence that you can always recover from a wrong turn and continuously improve your application.
Troubleshooting
Let’s face it: even with an AI helper, things can go wrong. Maybe a feature isn’t working as intended, or a design change had unintended side effects. The first line of defense is to troubleshoot and fix the issue. In the previous chapter, you saw that you can directly ask Bolt to debug a problem. But let’s go a bit deeper into practical troubleshooting steps in Bolt.
Suppose you notice a bug. Your app is throwing an error (you see a red error overlay in the preview or an error message in the browser console log), or perhaps nothing happens when you click a button that should do something. Here’s a systematic approach:
- Step 1: Identify the problem clearly
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Try to pinpoint what’s not working. Maybe it’s that clicking the Add to Cart button doesn’t ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.