René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`readableStream.tee()` doesn't work when using `process.nextTick(...)`","articleBody":"### Version\r\n\r\nv16.6.2\r\n\r\n### Platform\r\n\r\nLinux solus 5.13.8-191.current #1 SMP PREEMPT Fri Aug 6 11:29:58 UTC 2021 x86_64 GNU/Linux\r\n\r\n### Subsystem\r\n\r\nstream/web\r\n\r\n### What steps will reproduce the bug?\r\n\r\n```js\r\nimport {ReadableStream} from 'stream/web';\r\n\r\nlet controller;\r\nlet start = c =\u003e (controller = c);\r\nlet pull = () =\u003e {\r\n  if (pull.called) return;\r\n  pull.called = true;\r\n\r\n  process.nextTick(() =\u003e {\r\n   controller.enqueue(new Uint8Array([102, 111, 111, 98, 97, 114]))\r\n\r\n    process.nextTick(() =\u003e {\r\n     controller.close()\r\n    });\r\n  });\r\n};\r\n\r\nconst [a, b] = new ReadableStream({start, pull}).tee();\r\n\r\nfor (const stream of [a, b]) {\r\n  const chunks = [];\r\n\r\n  for await (const chunk of stream) {\r\n    chunks.push(chunk);\r\n  }\r\n\r\n  console.log('received:', Buffer.concat(chunks).toString());\r\n}\r\n```\r\n\r\n### How often does it reproduce? Is there a required condition?\r\n\r\nAlways.\r\n\r\n### What is the expected behavior?\r\n\r\n```\r\nreceived: foobar\r\nreceived: foobar\r\n```\r\n\r\n### What do you see instead?\r\n\r\n```\r\nreceived: foobar\r\nreceived:\r\n```\r\n\r\n### Additional information\r\n\r\nDeno for reference: https://github.com/denoland/deno/blob/a0285e2eb88f6254f6494b0ecd1878db3a3b2a58/ext/web/06_streams.js#L1465-L1543\r\n\r\n/cc @ronag @mcollina @jasnell","author":{"url":"https://github.com/szmarczak","@type":"Person","name":"szmarczak"},"datePublished":"2021-08-13T16:10:58.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":12},"url":"https://github.com/39758/node/issues/39758"}