I Made Streaming Markdown 300x Faster — Here's the Architecture
javascript
dev.to
Every AI chat app has the same hidden performance bug. Go open ChatGPT. Stream a long response. Open DevTools → Performance tab → Record. Watch the flame chart. Every single token triggers a full re-parse of the entire accumulated markdown string. Every heading re-detected. Every code block re-highlighted. Every table re-measured. After 500 tokens on a 2KB response, your app has re-parsed 1,000,000 characters. The work scales quadratically. I built StreamMD to make this structurally impossib