At least for me one of my favorite things is how integrated it is, after having used Rust for a while, having the compiler, linter, lightweight testing and formatting all in one bundle is an amazing time saver and a major boon for me. No more fiddling with ever growing configurations for ESLint, or having to install Jest/Ava/uvu/tap for testing and their ESLint rules and then Prettier which may also require ESLint... I realize not everyone cares enough to configure it, but the approach of Deno (and Rust, and Go, and so on) is such a weight of my shoulders when starting a project. Just open Neovim, create a TypeScript file, write some tests, all without having to do any kind of configuration or installation of packages.