Use this page to find the formal Dart language specification. For a gentler introduction to Dart, see the language tour.

Dart 2

The Dart 2 language specification is available in PDF format:

• Formal specification (Dart 2.2)
• Latest, in-progress specification (produced from a LaTeX file)

New language features are typically described using informal language feature specifications in the dart-lang/language repo:

• Accepted informal proposals
• Drafts of potential features

Dart 1.x

The formal Dart 1.x language specification is available from the Ecma International website:

• Dart Programming Language Specification, 4^th Edition