Jai Prakash Singh

Every AI chat app re-parses the entire markdown on each token—O(n²) slowdown. After 500 tokens, that’s 500 full re-renders. StreamMD fixes this with incremental block parsing: only new text is processed, completed blocks are memoized (no re-render), and only the active block updates. Result: ~300x less work. Built-in syntax highlighting (15 langs, ~3kB, zero deps). Drop-in:

Every AI chat app has the same bug — scrollbar jitter when streaming tokens. ZeroJitter is a React component that renders streaming LLM text on instead of the DOM. The result: → 0 layout reflows (DOM causes 1 per token) → 60fps locked (DOM drops to 45-58fps) → <1ms layout time (DOM: 0.3-2ms) → Zero dependencies → Full accessibility (aria-live mirror) → International text (CJK, BiDi, Thai, emoji) Text measurement happens in a Web Worker. The main thread just paints pixels.

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