claude-code - 💡(How to fix) Fix [Feature Request] Add project subagents support to desktop application [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:508:28)\n at addChunk (node:internal/streams/readable:559:12)\n at readableAddChunkPushByteMode (node:internal/streams/readable:510:3)\n at Readable.push (node:internal/streams/readable:390:5)\n at Pipe.onStreamRead (node:internal/stream_base_commons:189:23)","timestamp":"2026-04-15T21:54:17.255Z"}]

TL;DR

Increase the maxBuffer limit for child processes to prevent the stdout maxBuffer length exceeded error.

Guidance

• The error message indicates that the maxBuffer limit for child processes has been exceeded, suggesting that the output from a child process is too large.
• To mitigate this, you can try increasing the maxBuffer limit by using the stdio option when creating a child process, for example, by setting stdio: 'pipe' and maxBuffer: 1024 * 1024 (1MB).
• Verify that the error is resolved by checking the application logs for the RangeError [ERR_CHILD_PROCESS_STDIO_MAXBUFFER] error after applying the change.
• Consider optimizing the output from the child process to reduce the amount of data being written to stdout, if possible.

Example

const { spawn } = require('child_process');

const childProcess = spawn('command', {
  stdio: 'pipe',
  maxBuffer: 1024 * 1024, // 1MB
});

Notes

The optimal maxBuffer value will depend on the specific requirements of your application and the amount of output generated by the child process.

Recommendation

Apply workaround: Increase the maxBuffer limit for child processes, as this is a more targeted solution that addresses the specific error being encountered.