Complex sentence: This is identical to how code is written in the Dart programming language, but with some extra constraints (described below) it would be possible to "infer" the types of all the variables at compile time.
Split into simpler sentences: This is identical to how code is written in the Dart programming language except that it is subject to some additional constraints as described below. It would be possible to "infer" the types of all the variables at compile time.