Playground

The BioLang Playground lets you write and run BioLang code directly in your browser using WebAssembly. No installation, no server — just open the page and start coding.

Features

• Persistent state between runs — variables and functions carry over
• Block numbering and "Run All Above + This" for multi-block scripts
• Inline SVG chart rendering from bar_chart(), scatter(), histogram(), etc.
• Syntax highlighting with BioLang-aware tokenizer
• Dark/light theme toggle

How It Works

• The playground compiles BioLang to WebAssembly via the br-wasm crate
• Each code block runs in a shared interpreter instance (thread-local)
• Output is captured as JSON: { ok, value, type, output, error }
• SVG output is rendered inline with white background

Keyboard Shortcuts

Limitations

• File I/O reads via synchronous XHR (__blFetch.sync) — works for URLs only
• No filesystem access (use the REPL for local files)
• Single-threaded — no parallel execution
• ~50MB WASM binary download on first visit (cached by service worker)

Open the Playground →