Deno

Deno is an open-source JavaScript and TypeScript runtime created by Ryan Dahl - the original author of Node.js - and unveiled in 2018 as a response to the design flaws he saw in Node.

Deno is secure by default (a script must explicitly request network, filesystem or other access), supports TypeScript natively, uses Web standards (fetch, ESM, Web APIs) and ships with its own tooling (formatter, linter, test runner, bundler).

Version 2 (2024) brought full npm compatibility and serverless deployment through Deno Deploy, making it a serious option for the edge and modern tooling.