Type Studio

A desktop AI-Powered writing app for Typst and MarkDown

What it does

• Live preview. Edit on the left, see the rendered PDF on the right. View → Toggle Sidecar Preview (⌘⇧P).
• Monaco editor with a Typst language mode, slash-command palette, and Cmd+S snapshots so you can walk back to any earlier save.
• Markdown mode. Open .md and the app converts it to a hidden .typ so you get the same live preview without leaving Markdown.
• LSP features from tinymist: diagnostics, hover, completion, go-to.
• File tree with create/rename/delete, watched for external changes.
• PDF export via the current file's Typst world.

Running

Prerequisites: Rust (stable), Node 20+, and Xcode command-line tools on macOS.

npm install
npm run tauri dev      # dev build + hot reload
npm run tauri build    # production app bundle

A bundled tinymist binary is resolved at startup; no separate install needed.

Tests

npm run test:run                       # frontend (Vitest, jsdom)
cargo test --manifest-path src-tauri/Cargo.toml   # Rust side

84 frontend tests and 61 Rust tests at last count.

Layout

src/                 React app
  components/        Editor, Preview, FileExplorer, Layout, FileHistory
  stores/            Zustand editor store
  hooks/             usePreview, etc.
src-tauri/           Rust backend
  src/lib.rs         commands, menu, compile actor
  src/preview_sidecar.rs   tinymist preview process manager
  src/lsp_bridge.rs  LSP WebSocket bridge to tinymist

Status

Early, single-developer project. Expect rough edges; file issues freely.