René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"vm: `Object.defineProperty` doesn't work properly for `globalThis`","articleBody":"### Version\n\n26.3.0\n\n### Platform\n\n```text\nDarwin hostname 25.5.0 Darwin Kernel Version 25.5.0: Mon Apr 27 20:38:00 PDT 2026; root:xnu-12377.121.6~2/RELEASE_ARM64_T8103 arm64\n```\n\n### Subsystem\n\n_No response_\n\n### What steps will reproduce the bug?\n\nRun a script below\n\n```javascript\nimport { createContext, Script } from \"node:vm\";\n\nconst context = {};\ncreateContext(context);\nnew Script(\n    `globalThis.foo = 0; Object.defineProperty(globalThis, \"foo\", { enumerable: false });`,\n).runInContext(context);\n\nconsole.log(context.foo);\n```\n\n### How often does it reproduce? Is there a required condition?\n\nalways\n\n### What is the expected behavior? Why is that the expected behavior?\n\nthe script should print \"0\", because `Object.defineProperty` without `value` option should keep the original value:\n\n```javascript\nglobalThis.foo = 0;\nObject.defineProperty(globalThis, \"foo\", { enumerable: false });\nconsole.log(globalThis.foo); // 0\n```\n\n### What do you see instead?\n\nthe script prints \"undefined\"\n\n### Additional information\n\nThe script works as intended in v26.2.0.","author":{"url":"https://github.com/fabon-f","@type":"Person","name":"fabon-f"},"datePublished":"2026-06-19T17:08:04.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":2},"url":"https://github.com/64008/node/issues/64008"}