How I built my own Claude code in Typescript

I Built a Mini Claude Code from Scratch. Here's What I Learned A few months ago I went down a rabbit hole: reading OpenCode's GitHub repo, studying screenshots of Claude Code's behavior, reverse engineering the flows. I wanted to understand how these terminal coding agents actually work under the hood, not just use them, but build one. This post is about what I built, the real technical challenges I hit, and what I'm planning next. What I Built A CLI-based AI coding agent. You o...