comlink/docs/examples/04-eventlistener-example/event.transferhandler.js

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Comlink.transferHandlers.set("event", {
  canHandle(obj) {
    return obj instanceof Event;
  },
  serialize(obj) {
    return [
      {
        targetId: obj && obj.target && obj.target.id,
        targetClassList: obj &&
          obj.target &&
          obj.target.classList && [...obj.target.classList],
        detail: obj && obj.detail,
      },
      [],
    ];
  },
  deserialize(obj) {
    return obj;
  },
});