engine_typescript(fix): export HTTP request/response runtime symbols

[miguelcsx]

This PR fixes a packaging issue in @boundaryml/baml where the TypeScript package entrypoint did not export several runtime symbols that generated clients expect to import.

Referenced here: Discord Message

Why this fixes the issue

The change adds the missing runtime exports in engine/language_client_typescript/typescript_src/index.ts for:

• HTTPRequest
• HTTPResponse
• SSEResponse

After this change:

• the package runtime matches its declared types
• generated clients can import these symbols correctly
• ESM consumers load without crashing at startup

What changed

• added the missing runtime in the TS/JS code
• bumped the local package version to 0.220.1

Developer impact

• fixes startup failures in TypeScript/ESM apps using generated BAML clients
• removes the mismatch between type definitions and runtime exports

Summary by CodeRabbit

• New Features

  • HTTPRequest, HTTPResponse, and SSEResponse are now exposed in the public API.
  • In browser environments, accessing these exports yields clear descriptive errors to prevent unsupported usage.

• Chores

  • Package version bumped to 0.220.1.

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: b2b908e5-816f-47eb-96b4-2bbd2acf3a4b

📥 Commits

Reviewing files that changed from the base of the PR and between 5e5c7ab and 2471450.

⛔ Files ignored due to path filters (1)

• engine/language_client_typescript/index.d.ts.map is excluded by !**/*.map

📒 Files selected for processing (4)

• engine/language_client_typescript/index.d.ts
• engine/language_client_typescript/index.js
• engine/language_client_typescript/package.json
• engine/language_client_typescript/typescript_src/index.ts

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📝 Walkthrough

Walkthrough

Adds HTTPRequest, HTTPResponse, and SSEResponse to the TypeScript language client public API, updates type re-exports to alias native implementations, and introduces a Node vs. browser import guard that throws on browser access for these HTTP/SSE symbols.

Changes

Cohort / File(s)	Summary
HTTP Type Exports engine/language_client_typescript/index.js, engine/language_client_typescript/typescript_src/index.ts, engine/language_client_typescript/index.d.ts	Added public exports HTTPRequest, HTTPResponse, SSEResponse; re-exported/aliased native implementations (HttpRequest as HTTPRequest, HttpResponse as HTTPResponse, SseResponse as SSEResponse) and added browser-path getters that throw a browser-specific error when accessed.
Package Version engine/language_client_typescript/package.json	Bumped package version from 0.220.0 to 0.220.1.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly describes the main change: exporting HTTP request/response runtime symbols for the TypeScript engine client package.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
promptfiddle	Skipped		Mar 13, 2026 11:25pm

[coderabbitai]

Actionable comments posted: 1

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 1f4e5374-a8be-4a41-b5eb-81ea16f67acf

📥 Commits

Reviewing files that changed from the base of the PR and between 2f58ba9 and ea67a2e.

📒 Files selected for processing (2)

• engine/language_client_typescript/index.js
• engine/language_client_typescript/package.json

[aaronvg]

ty for the fix, but we need to change the actual .ts code that generates these js files. These js files are autogenerated

[miguelcsx]

ty for the fix, but we need to change the actual .ts code that generates these js files. These js files are autogenerated

I didn't realize those files were autogenerated. I've updated the .ts source and regenerated the .js files. Thanks for the catch.