Programming

Today, we’re thrilled to announce Deno 2, which includes:

• Backwards compatibility with Node.js and npm, allowing you to run existing Node applications seamlessly
• Native support for package.json and node_modules
• Package management with new deno install, deno add, and deno remove commands
• A stabilized standard library
• Support for private npm registries
• Workspaces and monorepo support
• Long Term Support (LTS) releases
• JSR: a modern registry for sharing JavaScript libraries across runtimes

We are also continually improving many existing Deno features:

• deno fmt can now format HTML, CSS, and YAML
• deno lint now has Node specific rules and quick fixes
• deno test now supports running tests written using node:test
• deno task can now run package.json scripts
• deno doc’s HTML output has improved design and better search
• deno compile now supports code signing and icons on Windows
• deno serve can run HTTP servers across multiple cores, in parallel
• deno init can scaffold now scaffold libraries or servers
• deno jupyter now supports outputting images, graphs, and HTML
• deno bench supports critical sections for more precise measurements
• deno coverage can now output reports in HTML

Deno is a single binary for the TypeScript and JavaScript ecosystems. Deno is secure by default (installing npm libs do not automatically have full system perms/access).

The new standard library stabilizes a vetted collection of safe binaries instead of having to search for and install random libraries for basic or common use cases with [or without] own security assessments.

Deno compile compiles the TS/JS project into a single binary.

The backwards compatibility to npm and npm/js frameworks enables deno usage in existing projects and with existing libs with the benefits of deno and a path to incremental migration.

The announcement video is worth watching. The intro is great.