How does casting work from untyped nodes to typed nodes when building the linting AST?

[lancejpollard]

I asked this StackExchange question, perhaps you could help illuminate the conceptual framework around how the typed AST nodes work, and how you can do editing even.

https://softwareengineering.stackexchange.com/questions/446141/how-does-rslint-casting-work-from-untyped-nodes-to-typed-nodes-when-building-the

Thank you 🙏