René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Regression in Node 17.5, Assigning a function to prototype of an Object results in a TypeError: Cannot assign to read only property 'x' of object 'y' at Object.\u003canonymous>","articleBody":"### Version\n\n17.5\n\n### Platform\n\nLinux aras-Lenovo-Legion-5-17ARH05H 5.13.0-21-generic #21-Ubuntu SMP Tue Oct 19 08:59:28 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux\n\n### Subsystem\n\n_No response_\n\n### What steps will reproduce the bug?\n\nWe maintain the mongoose-project. Devs reported that node 17.5 is throwing a TypeError when using the package. \r\nI tested it with node 17.5 and run the unit tests, and could reproduce the Error. When I test with node 17.4, there is no TypeError.\r\nI checked the Changelog and there is no remark regarding a breaking change, nor does the changes implicate a breaking change in nodes behaviour.\r\n\r\nSo I assume that there is a Regression in node 17.5.\r\n\r\nMaybe something with the attribute \"map\" is special? \r\n\r\nAlso is reported that adding \"engines\": { \"node\": \">=12.0.0 \u003c17.5.0\" }, to package.json fixes the issue.\r\nIs there some nodejs quirk mode? Do we have to change something in our codebase to not raise this Error?\r\n\r\nJust checkout mongoose-project, install dependencies, and run the tests under node 17.5\r\n\r\nSee also:\r\nhttps://github.com/Automattic/mongoose/issues/11377\r\n\r\n\n\n### How often does it reproduce? Is there a required condition?\n\nHappens always.\n\n### What is the expected behavior?\n\nShould not throw a TypeError like it did not throw in node \u003c= 17.4 and unit tests should pass as usual.\n\n### What do you see instead?\n\nWhen running the tests we get:\r\n\r\n```\r\nTypeError: Cannot assign to read only property 'map' of object '#\u003cQueryCursor>'\r\n    at Object.\u003canonymous> (/home/aras/Workspace/mongoose/lib/cursor/QueryCursor.js:144:27)\r\n    at Module._compile (node:internal/modules/cjs/loader:1097:14)\r\n    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1151:10)\r\n    at Module.load (node:internal/modules/cjs/loader:975:32)\r\n    at Function.Module._load (node:internal/modules/cjs/loader:822:12)\r\n    at Module.require (node:internal/modules/cjs/loader:999:19)\r\n    at require (node:internal/modules/cjs/helpers:102:18)\r\n    at Object.\u003canonymous> (/home/aras/Workspace/mongoose/lib/query.js:12:21)\r\n    at Module._compile (node:internal/modules/cjs/loader:1097:14)\r\n    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1151:10)\r\n    at Module.load (node:internal/modules/cjs/loader:975:32)\r\n    at Function.Module._load (node:internal/modules/cjs/loader:822:12)\r\n    at Module.require (node:internal/modules/cjs/loader:999:19)\r\n    at require (node:internal/modules/cjs/helpers:102:18)\r\n    at Object.\u003canonymous> (/home/aras/Workspace/mongoose/lib/index.js:18:15)\r\n    at Module._compile (node:internal/modules/cjs/loader:1097:14)\r\n    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1151:10)\r\n    at Module.load (node:internal/modules/cjs/loader:975:32)\r\n    at Function.Module._load (node:internal/modules/cjs/loader:822:12)\r\n    at Module.require (node:internal/modules/cjs/loader:999:19)\r\n    at require (node:internal/modules/cjs/helpers:102:18)\r\n    at Object.\u003canonymous> (/home/aras/Workspace/mongoose/index.js:9:18)\r\n    at Module._compile (node:internal/modules/cjs/loader:1097:14)\r\n    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1151:10)\r\n    at Module.load (node:internal/modules/cjs/loader:975:32)\r\n    at Function.Module._load (node:internal/modules/cjs/loader:822:12)\r\n    at Module.require (node:internal/modules/cjs/loader:999:19)\r\n    at require (node:internal/modules/cjs/helpers:102:18)\r\n    at Object.\u003canonymous> (/home/aras/Workspace/mongoose/test/common.js:7:18)\r\n    at Module._compile (node:internal/modules/cjs/loader:1097:14)\r\n    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1151:10)\r\n    at Module.load (node:internal/modules/cjs/loader:975:32)\r\n    at Function.Module._load (node:internal/modules/cjs/loader:822:12)\r\n    at Module.require (node:internal/modules/cjs/loader:999:19)\r\n    at require (node:internal/modules/cjs/helpers:102:18)\r\n    at Object.\u003canonymous> (/home/aras/Workspace/mongoose/test/aggregate.test.js:7:15)\r\n    at Module._compile (node:internal/modules/cjs/loader:1097:14)\r\n    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1151:10)\r\n    at Module.load (node:internal/modules/cjs/loader:975:32)\r\n    at Function.Module._load (node:internal/modules/cjs/loader:822:12)\r\n    at ModuleWrap.\u003canonymous> (node:internal/modules/esm/translators:168:29)\r\n    at ModuleJob.run (node:internal/modules/esm/module_job:197:25)\r\n    at async Promise.all (index 0)\r\n    at async ESMLoader.import (node:internal/modules/esm/loader:337:24)\r\n    at async importModuleDynamicallyWrapper (node:internal/vm/module:437:15)\r\n    at async formattedImport (/home/aras/Workspace/mongoose/node_modules/mocha/lib/nodejs/esm-utils.js:7:14)\r\n    at async Object.exports.requireOrImport (/home/aras/Workspace/mongoose/node_modules/mocha/lib/nodejs/esm-utils.js:48:32)\r\n    at async Object.exports.loadFilesAsync (/home/aras/Workspace/mongoose/node_modules/mocha/lib/nodejs/esm-utils.js:103:20)\r\n    at async singleRun (/home/aras/Workspace/mongoose/node_modules/mocha/lib/cli/run-helpers.js:125:3)\r\n    at async Object.exports.handler (/home/aras/Workspace/mongoose/node_modules/mocha/lib/cli/run.js:374:5)\r\n```\n\n### Additional information\n\n_No response_","author":{"url":"https://github.com/Uzlopak","@type":"Person","name":"Uzlopak"},"datePublished":"2022-02-11T00:13:01Z","url":"https://github.com/nodejs/node/issues/41926"}