I would say it has certainly become elegant in recent years. I imagine instead of alternatives we will see a lot of things being compiled from X down to WebAss

I would say it has certainly become elegant in recent years. I imagine instead of alternatives we will see a lot of things being compiled from X down to WebAssembly. I see Rust/Go/Haskell targeting WASM in the near future. WebAssembly has a lot of potential, but I think JS will have its place for a long time to come as it always has on the web. It makes me laugh whenever I think I might be writing Java for the frontend again, but it could actually happen! Asking if TypeScript is good enough is kind of an odd question, good enough for what exactly? If you meant web development it certainly has its use case, but I think the discussion around TS and Flow is still open.