Deno 1.42, the latest release of the JavaScript, TypeScript, and WebAssembly runtime, introduces support for JSR, a new package registry for JavaScript and TypeScript. The release also improves Node and NPM compatibility and startup times.

Deno 1.42 was announced March 28. Users can upgrade in their terminal by running the deno upgrade command.

Deno 1.42 allows users to consume and publish modules to the JSR package registry directly from Deno, using the deno add and deno publish subcommands. At the same time, Deno continues to support NPM. JSR offers a modern, TypeScript-first and cross-platform-compatible registry, integrated into Deno, Deno’s developers said.

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