fix(code-interpreter): preserve result data in JSON

[pei711]

Fixes #1938.

Problem and change

Serializing Code Interpreter executions drops Result.data in JavaScript and drops empty data objects in Python. Preserve that field when supplied, including {}, while keeping absent data out of the serialized result. Python sync and async code paths share the corrected result model.

The production fix is one line in each SDK. Added JS and sync/async Python parser-to-serialization regressions and a patch changeset for both Code Interpreter packages.

Usage

const saved = JSON.parse(JSON.stringify(execution))
// saved.results[0].data now retains the structured data from the result.

saved = json.loads(execution.to_json())
# saved['results'][0]['data'] now retains an empty data object too.

Validation

• Before the fix: 2 JS regressions fail; 2 Python empty-data regressions fail. Absent data and populated Python data already pass.
• JS offline messaging, serialization, sandbox-URL and kernel-readiness tests: 16 passed.
• Python offline serialization, diagnostics, timeout, sandbox-URL and kernel-readiness tests: 38 passed.
• Code Interpreter JS lint, TypeScript check, changed-file Prettier check and base JS SDK build pass.
• Built Code Interpreter JS package passes a real loopback HTTP fixture through Sandbox.connect / runCode, then JSON serialization preserves empty and populated data. This allocates no cloud sandbox and performs no real code execution.
• Code Interpreter Python package-wide Ruff lint/format and ty check e2b_code_interpreter pass.
• git diff --check passes.

Tested on Windows with Node 24.13.1, Python 3.13.12 and pinned pnpm 10.34.5. The root pnpm run format, lint and typecheck wrappers were attempted; each stops when a Python package invokes make, which is unavailable here. The affected Python package's equivalent Ruff and ty commands passed directly through uv. Cloud sandbox tests and other runtimes were not run; these checks make no sandbox or provider calls.

This PR was fully generated with OpenAI Codex, including code, tests and description. Codex reviewed the change and ran the checks above; no human review is claimed.

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[cla-bot]

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[changeset-bot]

🦋 Changeset detected

Latest commit: 1549d0e

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@e2b/code-interpreter	Patch
@e2b/code-interpreter-python	Patch

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[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.

[devin-ai-integration]

TASTE.md review: no violations. The diff touches only Result serialization; checked parity (T-1), empty-object-as-present (T-13), undefined for absence (T-20), and docstrings (T-69). With this change, JS and Python both report data in formats() and serialize it, including {}, and both leave it out when it is missing or null.

Written by Devin

[pei711]

@cla-bot check

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