🧩 Deno Comes to ComfyUI — Write Custom Nodes in TypeScript

What if you could build ComfyUI custom nodes without writing a single line of Python?

ComfyUI's node ecosystem has been Python-only since day one. That's great if Python is your thing, but it locks out millions of JavaScript and TypeScript developers who want to extend their AI art workflows.

Now, a community project brings Deno — the modern JS/TS runtime created by Node.js founder Ryan Dahl — into the ComfyUI custom node ecosystem. This means you can write, test, and deploy ComfyUI nodes entirely in TypeScript.

**Why this matters:**

• **Massive developer pool unlocked** — JS/TS developers can now contribute nodes without learning Python first
• **Native TypeScript** — Full type safety out of the box, catching bugs at write time instead of runtime
• **Built-in security** — Deno's permission system means custom nodes can only access files and network resources you explicitly allow
• **Zero config** — No virtual environments, no pip dependency hell. Just write and run

ComfyUI is already the power-user's choice for AI image generation workflows. Opening up node development beyond Python could accelerate the ecosystem significantly — more developers means more nodes, more innovation, and more creative possibilities for everyone.

As ComfyUI continues its evolution with Nodes 2.0 and Vue migration in 2026, multi-language node support feels like a natural next step.