René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"The desiredSize of `Writable.toWeb()` is incorrect","articleBody":"### Version\n\nv22.12.0\n\n### Platform\n\n_No response_\n\n### Subsystem\n\n_No response_\n\n### What steps will reproduce the bug?\n\n```ts\nimport { Writable } from \"node:stream\";\n\nconst nodeWriteable = new Writable({\n  write(chunk, encoding, callback) {\n    // pending\n  },\n  highWaterMark: 5,\n  objectMode: false,\n});\nconst webWritable = Writable.toWeb(nodeWriteable);\nconst writer = webWritable.getWriter();\nwriter.write(new Uint8Array(3));\nconsole.log(nodeWriteable.writableLength, writer.desiredSize); // expect 3,2  actual 0,4\n\nlet promise = writer.write(new Uint8Array(3));\n\nconsole.log(nodeWriteable.writableLength, writer.desiredSize); // expect  6, -1， actual  0,3\n\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\nI think `writer.desiredSize` should be equal to `highWaterMark - odeWriteable.writableLength`\nOtherwise, after the Writable.toWeb() conversion, the buffer queue for the writable stream is expanded\n\n### What do you see instead?\n\nnone\n\n### Additional information\n\n_No response_","author":{"url":"https://github.com/eavidy","@type":"Person","name":"eavidy"},"datePublished":"2024-12-16T07:38:50.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/56269/node/issues/56269"}