Para docs

Para is two independent products:

• Lang — parse-time TypeScript syntax. Purity (pure), error chains (..> / ..! / ..&), pipelines (|>), ranges (a..b / a..=b), reactive signals (signal / derived / effect / when), JSON Schema data shapes (schema), pattern matching (match), decimal literals (0.1d). Lowers to standard JavaScript at parse time — runs anywhere Node, Bun, Deno, or browsers run. Files end in .pts / .ptsx (or .pjs / .pjsx over plain JS).
• Runtime (ParaBun) — a fork of Bun with native modules linked into the binary: parabun:llm (CUDA / Metal inference), parabun:speech (Whisper STT + Piper TTS), parabun:vision, parabun:gpu, parabun:camera, parabun:audio, parabun:gpio / i2c / spi. Built for using one machine’s hardware fully — single-node multi-GPU is in scope; distributed is not.

Neither requires the other. Lang compiles to JS that runs on stock Bun / Node / Deno; Runtime runs vanilla .ts / .js without any Para syntax. Pick one, both, or neither — they share a name because the design decisions reinforce each other, not because they depend on each other.

Try Lang in the browser at the Playground — no install needed.

Sections

• Install (Lang) — compile .pts to JS plus the @para/* runtime packages (cross-runtime: Node / Bun / Deno / browsers).
• Install (Runtime) — single-script install for ParaBun on Linux / macOS.
• Language reference — every Lang extension with the JavaScript it desugars to.
• Architecture — how @para/* (cross-runtime npm) and parabun:* (native Runtime) split, with the full module index.
• Modules — API references in the sidebar. Cross-runtime: @para/signals · parallel · arena · lifecycle · simd · csv · arrow · rtp · mcp. Runtime-only: parabun:llm · speech · vision · image · video · audio · camera · gpu · gpio · i2c · spi · assistant. Plus @para/pipeline and @para/decimal which back Lang’s |> operator and Nd-literal features.
• Examples — worked projects across frontend, backend, edge, IoT, voice assistants, and more.