What is Dart, Flutter's programming language?

Flutter chose Dart for specific technical reasons: its AOT compilation allows generating native ARM code without JavaScript bridges (which are the main cause of slowness in React Native), and its JIT compilation during development enables instant hot reload. JavaScript cannot compile to native ARM — it always needs a bridge that introduces latency. Dart eliminates that latency.

No. Dart has one of the gentlest learning curves among modern languages. Its syntax is familiar to any developer with experience in Java, Kotlin, Swift, TypeScript or C#. Most developers are productive in Dart within 2-4 weeks. The official Dart documentation (dart.dev) is excellent and there are abundant resources for transitioning from other languages.

Dart was originally designed to run in the browser as an alternative to JavaScript. Today its primary use is Flutter, but it can also be used server-side (Dart Shelf) and in command-line scripts. However, the mass adoption of Dart came alongside Flutter — it is practically impossible to talk about Dart without talking about Flutter in 2025.

Yes. Dart's package ecosystem — available at pub.dev — has over 40,000 published packages. Most are Flutter packages, but there are also backend and utility packages. The most critical packages (firebase_core, http, provider, riverpod, dio) are maintained by Google or by the community with thousands of active users.