To me "TypeScript runtime" means running TypeScript in a mode that runs faster than JavaScript by actually using the type info to generate better machine code. It does not mean translating to JavaScript at runtime and running in V8.
For example at one time there was an experimental version of Chrome that had a Dart Runtime. A quick google finds this HN thread when they decided NOT to have a dart runtime
https://news.ycombinator.com/item?id=9264531
So can we get clear? Does Deno plan to execute TypeScript natively (not via V8 or via a heavily modified V8) or are the plans to continue compiling TypeScript to JavaScript internally and actually just run JavaScript
This is the marketing line on the front page of the Deno project:
> A secure runtime for JavaScript and TypeScript.
They are using the same term "runtime" to describe JS as well as TS. All replies here by Deno team members use the language "Typescript support" but nobody here is saying TypeScript runtime.