[sxlijin]

Summary

This is an alternative to #4052 for comparing the TypeScript Web SDK release scaffolding. It keeps the same package/release scope, but generates the Workers Wasm entrypoint through Cloudflare's workers-rs / worker-build toolchain instead of adapting wasm-bindgen's bundler output directly.

• pin worker and worker-build 0.8.5 with their wasm-bindgen 0.2.125 toolchain
• enable workers-rs only for the workerd build through a worker-build Cargo feature, leaving browser Wasm unchanged
• generate the Workers entrypoint and Wasm module with worker-build
• adapt the generated WorkerEntrypoint.prototype methods back into the named library API expected by @boundaryml/baml-bridge-web
• install worker-build through mise locally and in the Web SDK release workflow

Tradeoffs

• adds the workers-rs dependency graph and a larger Cargo.lock delta
• couples the package to the matching worker-build / wasm-bindgen versions
• currently disables release symbol stripping only for worker-build because workers-rs 0.8.5 requires the externref table for panic-recovery wrappers: [BUG] Can no longer compile with strip = true cloudflare/workers-rs#1014
• keeps the generated worker-build entrypoint untouched, but adds a small facade over its prototype-based exports

The runtime remains intentionally scaffold-only, matching #4052: the package imports and exposes its API, but runtime calls may fail until the Web/Workers implementation change is applied.

Validation

• mise run stow
• mise run fmt
• mise run clippy
• actionlint .github/workflows/build2-web-sdk.reusable.yaml
• debug and release package builds
• pnpm pack --dry-run
• Vitest Workers import/API smoke test

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
beps	Ready	Preview, Comment	Jul 16, 2026 6:57am
promptfiddle	Building	Preview, Comment	Jul 16, 2026 6:57am
promptfiddle2	Ready	Preview, Comment	Jul 16, 2026 6:57am

[coderabbitai]

Important

Review skipped

Draft detected.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: fdfc81d6-2369-41a9-8c67-2bc5160e8ec0

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch sam/typescript-web-worker-build-scaffold

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}

[github-actions]

⏭️ Performance benchmarks were skipped

Perf benchmarks (CodSpeed) are opt-in on pull requests — they no longer run on every push. They always run automatically after merge to canary/main.

To run them on this PR, do any of the following, then push a commit (or re-run CI):

• Add RUN_CODSPEED=1 to the PR description, or
• Include run-perf or /perf in the PR title or any commit message.

[github-actions]

Binary size checks passed

✅ 7 passed

	Artifact	Platform	File	Gzip	Gated on	Baseline	Delta	Status
✅	baml-cli	Linux	🔒 22.8 MB	9.7 MB	file	22.8 MB	+58.0 KB (+0.3%)	OK
✅	packed-program	Linux	🔒 16.3 MB	6.8 MB	file	16.3 MB	+24.6 KB (+0.2%)	OK
✅	baml-cli	macOS	🔒 17.6 MB	8.5 MB	file	17.5 MB	+49.7 KB (+0.3%)	OK
✅	packed-program	macOS	🔒 12.6 MB	6.0 MB	file	12.6 MB	+32 B (+0.0%)	OK
✅	baml-cli	Windows	🔒 19.1 MB	8.7 MB	file	18.7 MB	+414.7 KB (+2.2%)	OK
✅	packed-program	Windows	🔒 13.5 MB	6.1 MB	file	13.5 MB	+5.6 KB (+0.0%)	OK
✅	bridge_wasm	WASM	15.2 MB	🔒 4.3 MB	gzip	4.3 MB	+5.2 KB (+0.1%)	OK

🔒 = the size this artifact is GATED on (ceiling + delta). Binaries gate on file size (installed binary); WASM gates on gzip (download size). The other size is shown for information only.

---

Generated by cargo size-gate · workflow run

[sxlijin]

Closing in favor of #4052, which now includes the cargo-nextest setup for building and installing @boundaryml/baml-bridge-web into the TypeScript test fixtures.