We most certainly did not, TypeScript is and continues to be a primary concern for us and we plan on continuing to support it as a first-class citizen of the ecosystem
> Deno is a runtime for JavaScript and TypeScript that is based on the V8 JavaScript engine and the Rust programming language.
We've simply incorporated the type-checking and transpiling steps into the deno cli, making it super simple to get going, no config needed.
> A secure runtime for JavaScript and TypeScript.
Shouldn't require caveats, with the caveat being that there is no runtime for TS.
There is reason to believe that the extra information given from TS typings could be carried into runtime wins, and so there is absolutely pent up demand for an actual TS runtime.