Assuming you meant Deno, we used Node for the CLI because most web devs already have npm installed. We want the getting started process to be as simple as possible. Our Node CLI is just a wrapper really, as nearly all of the commands are actually implemented in Rust. You don't even need Node to build a Tauri app anymore. Node is not including in a shipped Tauri app, although we plan on supporting both Node and Deno as optional replacements for Rust in the future.