interface MessageEventInit
implements EventInit
import { type MessageEventInit } from "https://deno.land/x/deno@v1.41.0/ext/web/lib.deno_web.d.ts";
x/deno/ext/web/lib.deno_web.d.ts>MessageEventInit
import { type MessageEventInit } from "https://deno.land/x/deno@v1.41.0/ext/web/lib.deno_web.d.ts";