We will be working with other ECMA members and the wider JS community on the next iterations of JavaScript, in the TC39 working group. We will be pushing for features and improvements to the language that benefit everyone, but especially users of server-side JavaScript.

Specific features they plan to push forward are better support for non-JS assets in the ES module graph, better support for explicit resource management, and more extensive standard library functions for async iteration. Oh, and this:

As TypeScript is a core part of the Deno ecosystem, we are also very interested in pushing for even closer alignment of TypeScript and JavaScript in the future.