deno

Secure by default. No file, network, or environment access, unless explicitly enabled.

Supports TypeScript out of the box.

Ships only a single executable file.

Has built-in utilities like a dependency inspector (deno info) and a code formatter (deno fmt).

Has a set of reviewed (audited) standard modules that are guaranteed to work with Deno: deno.land/std

Has a number of companies interested in using and exploring Deno