Two very common use cases in React are reporting type issues on Aleph/Deno. The first one is window.open:

  window.open("https://github.com/akaFTS/bcc-data", "_blank");

Property 'open' does not exist on type 'Window & typeof globalThis'.deno-ts(2339)

And the other one is "e.target.value" when handling uncontrolled inputs:

onChange={(e) => setInput(e.target.value)}

Property 'value' does not exist on type 'EventTarget & HTMLInputElement'.deno-ts(2339)

Not sure if those issues are related to Aleph or Deno itself, but I couldn't find any solutions online.