import { MessageChannel } from "https://deno.land/x/deno@v1.28.3/cli/tsc/dts/lib.webworker.d.ts";
type
{ prototype: MessageChannel; new (): MessageChannel; }
x/deno/cli/tsc/dts/lib.webworker.d.ts>MessageChannel
import { MessageChannel } from "https://deno.land/x/deno@v1.28.3/cli/tsc/dts/lib.webworker.d.ts";