René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"stream/iter: broadcast consumer can leave earlier next() pending after overlapping next() calls","articleBody":"### Version\n\n26.2.0\n\n### Platform\n\n```text\nmacOS 26.5.0\n```\n\n### Subsystem\n\nstream\n\n### What steps will reproduce the bug?\n\n```js\nimport { broadcast } from 'node:stream/iter';\n\nconst { writer, broadcast: bc } = broadcast();\nconst it = bc.push()[Symbol.asyncIterator]();\n\nconst first = it.next();\nconst second = it.next();\n\nawait writer.write('x');\n\nconsole.log('second next():', await second);\n\nconst result = await Promise.race([\n  first.then((value) =\u003e ['settled', value]),\n  new Promise((resolve) =\u003e setTimeout(resolve, 50, ['pending'])),\n]);\n\nconsole.log('first next():', ...result);\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\n```console\nsecond next(): { done: true, value: undefined }\nfirst next(): settled { done: false, value: [ Uint8Array(1) [ 120 ] ] }\n```\n\n### What do you see instead?\n\n```console\nsecond next(): { done: false, value: [ Uint8Array(1) [ 120 ] ] }\nfirst next(): pending\n```\n\n### Additional information\n\n_No response_","author":{"url":"https://github.com/trivikr","@type":"Person","name":"trivikr"},"datePublished":"2026-05-23T04:20:57.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/63499/node/issues/63499"}