René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Thrown AbortErrors are not DOMExceptions","articleBody":"### Version\n\nv17.0.1\n\n### Platform\n\nany\n\n### Subsystem\n\n_No response_\n\n### What steps will reproduce the bug?\n\n```js\r\nimport { readFile } from 'fs/promises';\r\n\r\nconst ref = new DOMException('The operation was aborted', 'AbortError');\r\nconsole.log('REF INSTANCE', ref instanceof DOMException);\r\nconsole.log('REF OBJECT', ref);\r\n\r\nconst ab = new AbortController();\r\nab.abort();\r\n\r\ntry {\r\n    await readFile('does_not_matter', { signal: ab.signal });\r\n}\r\ncatch (err) {\r\n    console.log('ERR INSTANCE', err instanceof DOMException);\r\n    console.log('ERR OBJECT', err);\r\n}\r\n```\n\n### How often does it reproduce? Is there a required condition?\n\n100%, including for all other native APIs that supports signals.\n\n### What is the expected behavior?\n\nFrom the docs:\r\n\r\n> If a request is aborted the promise returned is rejected with an `AbortError`\r\n\r\nThere is no mention that this is a non-standard `new DOMException(message, 'AbortError')` error. As such, I expect 'REF' and 'ERR' logged objects to be the same (except the stack).\n\n### What do you see instead?\n\n```\r\nREF INSTANCE true\r\nREF OBJECT DOMException [AbortError]: The operation was aborted\r\n    at file://\u003csnip>/fail.mjs:3:13\r\n    at ModuleJob.run (node:internal/modules/esm/module_job:185:25)\r\n    at async Promise.all (index 0)\r\n    at async ESMLoader.import (node:internal/modules/esm/loader:281:24)\r\n    at async loadESM (node:internal/process/esm_loader:88:5)\r\n    at async handleMainPromise (node:internal/modules/run_main:65:12)\r\nERR INSTANCE false\r\nERR OBJECT AbortError: The operation was aborted\r\n    at checkAborted (node:internal/fs/promises:373:11)\r\n    at readFile (node:internal/fs/promises:845:3)\r\n    at file://\u003csnip>/fail.mjs:11:11\r\n    at ModuleJob.run (node:internal/modules/esm/module_job:185:25)\r\n    at async Promise.all (index 0)\r\n    at async ESMLoader.import (node:internal/modules/esm/loader:281:24)\r\n    at async loadESM (node:internal/process/esm_loader:88:5)\r\n    at async handleMainPromise (node:internal/modules/run_main:65:12) {\r\n  code: 'ABORT_ERR'\r\n}\r\n```\n\n### Additional information\n\nThis is only an issue in node 17+, since previous versions did not have a `DOMException` global.","author":{"url":"https://github.com/kanongil","@type":"Person","name":"kanongil"},"datePublished":"2021-11-01T13:56:23Z","url":"https://github.com/nodejs/node/issues/40692"}