Looks like 18.2 (beta) already has far more major changes. A couple that stood out to me were new CSS support for View Transitions and many other declarations, and WebAssembly (WASM) support for garbage collection and tail calls.

https://developer.apple.com/documentation/safari-release-not...

Safari on Mac keeps freezing when I open pages from the TypeScript Handbook, and the latest release hasn’t resolved this issue:

https://www.typescriptlang.org/docs/handbook/2/narrowing.htm...

Works fine for me on macOS 13 with Safari Version 18.1 (18619.2.8.111.5, 18619)

FWIW, this page works fine in Safari 18.2 (via macOS 15.2 beta).

Works fine on 18.1 (20619.2.8.11.10)