René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Example snippet does not behave like it should","articleBody":"### Affected URL(s)\n\nhttps://nodejs.org/api/worker_threads.html#considerations-when-cloning-objects-with-prototypes-classes-and-accessors\n\n### Description of the problem\n\nThe following code is supposed to print `{}`:\n```js\nconst { port1, port2 } = new MessageChannel();\n\nport1.onmessage = ({ data }) =\u003e console.log(data);\n\nport2.postMessage(new URL('https://example.org'));\n\n// Prints: { } \n```\nHowever, when running it, it gives the following:\n```\nnode:internal/per_context/domexception:76\n    const self = new Error();\n                 ^\n\nDOMException [DataCloneError]: Cannot clone object of unsupported type.\n    at new DOMException (node:internal/per_context/domexception:76:18)\n    at file:///my-folder-structure/test.mjs:6:7\n    at ModuleJob.run (node:internal/modules/esm/module_job:377:25)\n    at async onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:691:26)\n    at async asyncRunEntryPointWithESMLoader (node:internal/modules/run_main:101:5)\n```","author":{"url":"https://github.com/davidebombelli","@type":"Person","name":"davidebombelli"},"datePublished":"2025-10-31T00:49:14.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/60504/node/issues/60504"}