robobun 3d46ae2fa4 fix(node-fetch): convert old-style Node.js streams to Web streams (#26226) ...

## Summary
- Fix multipart uploads using form-data + node-fetch@2 +
fs.createReadStream() being truncated
- Convert old-style Node.js streams (that don't implement
`Symbol.asyncIterator`) to Web ReadableStreams before passing to native
fetch

## Test plan
- [x] New tests in `test/regression/issue/26225.test.ts` verify:
  - Multipart uploads with form-data and createReadStream work correctly
  - Async iterable bodies still work (regression test)
  - Large file streams work correctly
- [x] Tests fail with `USE_SYSTEM_BUN=1` and pass with debug build

Fixes #26225

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Co-authored-by: Claude Bot <claude-bot@bun.sh>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

2026-01-18 13:19:02 -08:00

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