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The Wire · Showcase

AI SDK FIXES FIREWORKS ERROR PARSING, WORKFLOW KILLS SILENT SANDBOX SIDE EFFECTS

By RepoJournal · Filed · About Vercel

Walter Korman github-actions[bot] TooTallNate github-actions VaguelySerious next-js-bot[bot]
6 people shipped this
Walter Korman @shaper 2 cited github-actions[bot] @github-actions[bot] 2 cited TooTallNate @TooTallNate 2 cited github-actions @github-actions 1 cited VaguelySerious @VaguelySerious 1 cited next-js-bot[bot] @next-js-bot[bot] 1 cited

The AI SDK patched a critical error-handling bug in the Fireworks provider that was silently swallowing structured error messages, while workflow's serialization layer now runs side-effect-free to prevent sandbox code execution during inspection.

Fireworks was returning errors as nested objects, but the AI SDK schema expected a bare string [1]. Parse failures fell back to HTTP reason phrases, burying the real error details. Walter Korman fixed the schema and added test coverage [2], with ai@7.0.48 shipping alongside five dependent package bumps [3] [4] [5]. Over in workflow, TooTallNate eliminated a deeper problem: serialization was triggering side effects by dispatching ordinary operations like `Array.from()` and `.toISOString()` into the sandboxed VM, executing user code at inspection time [6] [7]. The fix uses reflection primitives that stay on the host. VaguelySerious also shrunk the event-log race repro test from 1400 runs down to 14, cutting preview-deployment churn by 100x [8]. Next.js canary deprecated `experimental.useCache` and fixed hybrid Pages/App Router not-found handling [9].

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Action items

References

  1. [1] fix(provider/fireworks): parse the object error envelope ↗ vercel/ai
  2. [2] fix(examples/fireworks): await `consumeStream` in error message test (#18316) vercel/ai
  3. [3] Version Packages ↗ vercel/ai
  4. [4] @ai-sdk/policy-opa@1.0.48 ↗ vercel/ai
  5. [5] @ai-sdk/react@4.0.51 ↗ vercel/ai
  6. [6] feat(core): side-effect-free serialization of workflow VM values ↗ vercel/workflow
  7. [7] feat(core): side-effect-free serialization of workflow VM values (#3257) vercel/workflow
  8. [8] [ci] Shrink the event-log race repro job 100x and add a local world-postgres runner ↗ vercel/workflow
  9. [9] v16.3.0-canary.106 ↗ vercel/next.js

Quick answers

What shipped in Vercel on August 2, 2026?
The AI SDK patched a critical error-handling bug in the Fireworks provider that was silently swallowing structured error messages, while workflow's serialization layer now runs side-effect-free to prevent sandbox code execution during inspection. In total, 6 commits, 6 pull requests, and 11 releases landed.
Who contributed to Vercel on August 2, 2026?
6 developers shipped this update, including Walter Korman, github-actions, github-actions[bot], VaguelySerious, TooTallNate, and next-js-bot[bot].
What were the notable Vercel updates?
fix(provider/fireworks): parse the object error envelope, fix(examples/fireworks): await `consumeStream` in error message test (#18316), and Version Packages.

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