What is a purpose of alloy being react like?

[artsiommiksiuk]

I do understand the premise of alloy being a mapping layer from TypeSpec to [Target Language]. I don't understand why making alloy react like for this, if purpose of TypeSpec and Alloy as a consequence is to be stateless. You don't have an all time running stateful application to support incremental updates. The only reason I see is exactly to support incremental builds, but then efforts and outcome are in very huge disproportion here.

So, my question is why making alloy following react style when what it needs to be is to be just a set of function to map TypeSpec to TypeScript, Python, whatever?