## Summary
Consolidates the fix and tests from #1285 and #1293 into a single PR.
- **js-sdk**: `uploadFile` used to pass a Node `Readable` directly to
`fetch`, causing undici to fall back to `Transfer-Encoding: chunked`. S3
presigned PUT URLs reject chunked with 501 NotImplemented. Fix buffers
the archive first so `Content-Length` is set. Includes:
- Regression test that spins up a local HTTP server and asserts
`Content-Length` is set and matches the body, and `Transfer-Encoding` is
not chunked.
- Type-fix for the CLI's typecheck (cast `Pack` →
`AsyncIterable<Buffer>`).
- Dynamic import of `node:stream/consumers` so the browser bundle
doesn't pull it in.
- **python-sdk**: Adds sync + async regression tests for `upload_file`
that guard against the same class of bug (someone swapping
`tar_buffer.getvalue()` for a stream/generator). No Python code change —
the current implementation already passes bytes to `httpx.put(...,
content=...)`.
Authorship of the original JS fix commit preserved (truffle-dev).
Closes#1243.
## Test plan
- [x] `pnpm run test tests/template/uploadFile.test.ts` — passes
- [x] `pnpm run typecheck` / `lint` clean across js-sdk and cli
- [x] `poetry run pytest tests/sync/template_sync/test_upload_file.py
tests/async/template_async/test_upload_file.py -v` — both pass
- [x] `poetry run make format` / `make lint` / `make typecheck` clean
🤖 Generated with [Claude Code](https://claude.com/claude-code)
---------
Co-authored-by: truffle <truffleagent@gmail.com>
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
Mish Ushakov
3167e19b4f