fix(code-interpreter): list text and chart in JS Result.formats()

[lemonzoey]

Summary

Result.formats() in the JS Code Interpreter SDK reported every available representation except text and chart, so a result carrying either reported no formats at all (a text+chart result returned []). This diverged from the Python SDK, whose Result.formats() lists both. Fixes #1981.

The JS formats() listed html, markdown, svg, png, jpeg, pdf, latex, json, javascript, data, and extra keys — but not text or chart. This adds text (first) and chart (after data), matching the Python SDK's ordering:

   formats(): string[] {
     const formats = []
+    if (this.text) {
+      formats.push('text')
+    }
     if (this.html) { formats.push('html') }
     ...
     if (this.data) {
       formats.push('data')
     }
+    if (this.chart) {
+      formats.push('chart')
+    }

Usage example

const execution = await sandbox.runCode('print("hello")')
const result = execution.results[0]

// Before: [] — the result has a text representation but formats() reported none
// After:
result.formats() // ['text']

const execution = await sandbox.runCode(`
  import matplotlib.pyplot as plt
  plt.bar(['a', 'b'], [1, 2])
  plt.show()
`)
const result = execution.results[0]

// Before: []  (chart present but invisible to formats())
// After:
result.formats() // ['text', 'chart']

Discovery via formats() now works as expected:

if (result.formats().includes('chart')) {
  renderChart(result.chart)
}

Testing

formats() had no JS test coverage. Adds packages/code-interpreter-js/tests/formats.test.ts covering: a text-only result, a chart result, a text+chart result (asserting the Python order), a result with every format (asserting the full Python ordering), and a bare result (empty). All no-credential unit tests pass; format / lint / typecheck clean (the one remaining messaging.ts lint warning is pre-existing and unrelated).

Scope

JS-only — Python already does the right thing. This is separate from the ongoing Result serialization work and does not overlap:

• fix(code-interpreter): preserve result data in JSON #1939 / fix(code-interpreter): preserve Result.data in JSON serialization #1971 — data in toJSON() / Python formats() empty-data.
• fix(code-interpreter): include Result.chart in JS toJSON output #1948 — chart in toJSON().
• fix(code-interpreter): deserialize SuperChart from elements #1826 — chart deserialization in Result.

It complements #1948: that makes chart survive toJSON() serialization; this makes chart discoverable via formats().

🤖 Generated with kscc

---

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🦋 Changeset detected

Latest commit: 84f1220

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

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Name	Type
@e2b/code-interpreter	Patch

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[chatgpt-codex-connector]

Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-14T09:44:15.804647Z	02722b3	PR opened

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[devin-ai-integration]

TASTE.md review: compliant — checked T-1 (JS/Python parity; the new text/chart entries and their order now match Python Result.formats() exactly), T-15, T-19, T-69/T-72; 0 violations in the changed lines.

[devin-ai-integration]

✅ Devin Review: No Issues Found

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

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[lemonzoey]

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