Slow message passing with workers

deno_main.mjs

let msgCount = 100000;
console.log("Sending", msgCount, " messages ...");

let worker = new Worker(new URL("./deno_worker.mjs", import.meta.url).href, {
  type: "module",
});

worker.onmessage = (msg) => {
  if (msg.data >= msgCount) {
    worker.terminate();
    Deno.exit();
  } else {
    worker.postMessage(msg.data + 1);
  }
};

worker.postMessage(0);

deno_worker.mjs

self.onmessage = (msg) => {
  self.postMessage(msg.data);
};

node_main.mjs

import { Worker } from "worker_threads";

let msgCount = 100000;
console.log("Sending", msgCount, " messages ...");

let worker = new Worker("./node_worker.mjs", { type: "module" });
worker.on("message", (id) => {
  if (id > msgCount) {
    worker.terminate();
    process.exit();
  } else {
    worker.postMessage(id + 1);
  }
});

worker.postMessage(0);

node_worker.mjs

import { parentPort } from "worker_threads";

parentPort.on("message", (id) => {
  parentPort.postMessage(id);
});