import { ReadableByteStreamController } from "https://deno.land/x/deno@v1.29.0/ext/web/lib.deno_web.d.ts";
type
{ prototype: ReadableByteStreamController; new (): ReadableByteStreamController; }
x/deno/ext/web/lib.deno_web.d.ts>ReadableByteStreamController
import { ReadableByteStreamController } from "https://deno.land/x/deno@v1.29.0/ext/web/lib.deno_web.d.ts";