import { ReadableStreamDefaultController } from "https://deno.land/x/deno@v1.27.1/ext/web/lib.deno_web.d.ts";
type
{ prototype: ReadableStreamDefaultController; new (): ReadableStreamDefaultController; }
x/deno/ext/web/lib.deno_web.d.ts>ReadableStreamDefaultController
import { ReadableStreamDefaultController } from "https://deno.land/x/deno@v1.27.1/ext/web/lib.deno_web.d.ts";