Deno’s compatibility data can now be found in the compatibility chart on MDN. The official blog notes that Deno embraces modern Web APIs, and they believe that when features are added to runtime, it is best to do so in the form of Web APIs. This is both good for developers, who are already familiar with these APIs, and good for Deno, who can leverage existing tests.
In addition, this data is also available programmatically through the mdn/browser-compat-data repository.
See the official blog for details.