tl;dr: Deno 2.9 introduces `deno desktop`, a command that bundles a Deno/TypeScript project (including Next.js, Astro, SvelteKit, etc.) into a self-contained cross-platform desktop binary with the Deno runtime and a webview. It defaults to the OS's native webview for smaller binaries (with optional bundled Chromium), uses in-process bindings instead of IPC, supports cross-compilation from a single machine, and includes built-in binary-diff auto-updates. The feature is currently only available in the canary build and APIs may change before stabilization.