It was able to rewrite (partially, some didn't get fully done) 10 files before I hit my budget limits from Vue 2 Class Component syntax to Vue 3 Composition API. It would have needed another iteration or so to iron out the issues (plus some manual clean up/checking from me) but that's within spitting distance of being worth it. For now I'll use ChatGPT/Claude (which I pay for) to do this work but I will keep a close eye on this project, it's super cool!