Comment by airspeedswift

You can read about the trade-offs in the language proposal here: https://github.com/swiftlang/swift-evolution/blob/main/propo...

In particular:

> Even with the introduction of typed throws into Swift, the existing (untyped) throws remains the better default error-handling mechanism for most Swift code. The section "When to use typed throws" describes the circumstances in which typed throws should be used.