claude-code - 💡(How to fix) Fix Auto-updater has a design flaw that causes silent... [1 comments, 2 participants]

[{"error":"RangeError [ERR_CHILD_PROCESS_STDIO_MAXBUFFER]: stdout maxBuffer length exceeded\n at Socket.onChildStdout (node:child_process:484:14)\n at Socket.emit (node:events:518:28)\n at Socket.emit (node:domain:489:12)\n at addChunk (node:internal/streams/readable:561:12)\n at readableAddChunkPushByteMode (node:internal/streams/readable:512:3)\n at Readable.push (node:internal/streams/readable:392:5)\n at Pipe.onStreamRead (node:internal/stream_base_commons:189:23)","timestamp":"2026-04-21T19:47:40.272Z"},{"error":"fv1: Failed to install new version of claude: npm error code ENOTEMPTY\nnpm error syscall rename\nnpm error path /Users/shivsid/.npm-global/lib/node_modules/@anthropic-ai/claude-code\nnpm error dest /Users/shivsid/.npm-global/lib/node_modules/@anthropic-ai/.claude-code-vcznjTZZ\nnpm error errno -66\nnpm error ENOTEMPTY: directory not empty, rename '/Users/shivsid/.npm-global/lib/node_modules/@anthropic-ai/claude-code' -> '/Users/shivsid/.npm-global/lib/node_modules/@anthropic-ai/.claude-code-vcznjTZZ'\nnpm error A complete log of this run can be found in: /Users/shivsid/.npm/_logs/2026-04-21T19_47_43_598Z-debug-0.log\n at lY1 (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:2204:388)\n at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n at async file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:3177:8694","timestamp":"2026-04-21T19:47:44.054Z"},{"error":"Error: 404 {"type":"error","error":{"type":"not_found_error","message":"model: claude-3-5-haiku-20241022"},"request_id":"req_011CaHVcf9zgegua2xxLiUAe"}\n at B4.generate (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:895:21060)\n at yP.makeStatusError (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:1034:2131)\n at yP.makeRequest (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:1034:5344)\n at process.processTicksAndRejections (node:internal/process/task_queues:105:5)","timestamp":"2026-04-21T19:47:52.338Z"},{"error":"SyntaxError: Unexpected token 'A', "API Error:"... is not valid JSON\n at JSON.parse (<anonymous>)\n at file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:747:9932\n at Q (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:713:13287)\n at Hy2 (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:1046:37066)\n at process.processTicksAndRejections (node:internal/process/task_queues:105:5)","timestamp":"2026-04-21T19:47:52.339Z"},{"error":"fv1: Failed to install new version of claude: npm error code ENOTEMPTY\nnpm error syscall rename\nnpm error path /Users/shivsid/.npm-global/lib/node_modules/@anthropic-ai/claude-code\nnpm error dest /Users/shivsid/.npm-global/lib/node_modules/@anthropic-ai/.claude-code-vcznjTZZ\nnpm error errno -66\nnpm error ENOTEMPTY: directory not empty, rename '/Users/shivsid/.npm-global/lib/node_modules/@anthropic-ai/claude-code' -> '/Users/shivsid/.npm-global/lib/node_modules/@anthropic-ai/.claude-code-vcznjTZZ'\nnpm error A complete log of this run can be found in: /Users/shivsid/.npm/_logs/2026-04-21T19_47_56_092Z-debug-0.log\n at lY1 (file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:2204:388)\n at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n at async file:///usr/local/lib/node_modules/@anthropic-ai/claude-code/cli.js:3177:8694","timestamp":"2026-04-21T19:47:56.242Z"},{"error":"fv1: Failed to install new version of claude: npm error code ENOTEMPTY\nnpm error syscall rename\nnpm error path /Users/shivsid/.npm-global/lib/node_modules/@anthropic-ai/claude-code\nnpm error dest /Users/shivsid/.npm-global/lib/node_modules/@anthropic-ai/.claude-code-vcz

TL;DR

The most likely fix is to detect and remove orphan .claude-code-* directories on startup to prevent silent failure accumulation.

Guidance

• The issue is caused by the auto-updater running npm install -g from inside the running Claude binary, which fails due to file handles held by the running process.
• To verify the issue, check for orphan .claude-code-* directories in the .npm-global/lib/node_modules/@anthropic-ai/ directory.
• A potential workaround is to manually delete these orphan directories to allow updates to proceed.
• Implementing the suggested fix (Option 1) would involve adding ~5 lines of code to detect and remove these directories on startup.

Example

No code example is provided as the issue does not require a specific code snippet to understand the solution.

Notes

The provided error logs suggest that the issue is related to the auto-updater failing due to file system constraints, but the exact implementation details of the fix may vary depending on the specific requirements of the Claude application.

Recommendation

Apply workaround: detect and remove orphan .claude-code-* directories on startup. This is the easiest and most straightforward solution to prevent silent failure accumulation, as suggested in the issue description.