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Topics: JavaScript Full archive →

The Wire · Showcase

EVE SHIPS MOUNTED EXTENSIONS, NEXT.JS TACKLES TYPESCRIPT 7

By RepoJournal · Filed · About Vercel

AndrewBarba sampoder elprans karthikscale3 ctgowrie dnukumamras timneutkens
8 people shipped this
AndrewBarba @AndrewBarba 2 cited sampoder @sampoder 2 cited elprans @elprans 2 cited karthikscale3 @karthikscale3 2 cited ctgowrie @ctgowrie 1 cited dnukumamras @dnukumamras 1 cited timneutkens @timneutkens 1 cited ricardo-agz @ricardo-agz 1 cited

Eve's extension system just went from concept to production-ready, while Next.js adds an experimental TypeScript CLI backend to sidestep the JS API bottleneck until TypeScript 7 lands officially.

Eve landed mounted extensions [1], a game-changer for agent customization: author an extension as a package with tools, connections, skills, and hooks, mount it with one line under `agent/extensions/`, and the build automatically composes it into the agent under a namespace. This is the modular architecture teams have been waiting for. In parallel, Eve fixed two critical dev-mode failures: remote URL query parameters now preserve correctly [2], and deployment protection challenges (both SSO redirects and structured 401 responses) now trigger auth recovery [3]. Eve also hardened frontmatter parsing against code injection and pinned OpenAPI connections to HTTPS [4]. Over in Next.js, the TypeScript 7 support PR [5] adds `experimental.useTypeScriptCli` so projects can run their local `tsc` during build without waiting for the legacy JavaScript API to catch up. Turbopack meanwhile is maturing service worker support: it now compiles service workers from pages router [6] and outputs them to `/_next/static/` [7] for Vercel deployment compatibility. The vercel-py SDK shipped a major upgrade [8]: Celery and Kombu can now use Vercel Queues as a backend via the new `vercel-celery` package. Supporting infrastructure landed too: header context helpers [9] make it safe to spawn threads with proper OIDC context, and workflow namespacing [10] solves multi-entrypoint conflicts. Workflow telemetry improved with client-side stream latency spans [11] and STSO step progress tracking [12].

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Action items

References

  1. [1] feat(eve): mounted extensions ↗ vercel/eve
  2. [2] fix(eve): dev client - preserve remote URL query parameters ↗ vercel/eve
  3. [3] fix(eve): dev auth - recover Vercel protection challenges ↗ vercel/eve
  4. [4] fix(eve): safe-by-default frontmatter parsing and https-pinned OpenAPI connections ↗ vercel/eve
  5. [5] (TypeScript 7 Support) Add experimental TypeScript CLI backend ↗ vercel/next.js
  6. [6] [turbopack] Compile service workers registered from pages router pages ↗ vercel/next.js
  7. [7] [turbopack] Output service workers to `/_next/static/` ↗ vercel/next.js
  8. [8] Add `vercel-celery` -- Vercel Queues backend for Kombu and Runtime Cache storage backend for Celery ↗ vercel/vercel-py
  9. [9] vercel-headers: Add helpers to run threads/callabacks with header context ↗ vercel/vercel-py
  10. [10] [workflows sdk] support namespacing workflows ↗ vercel/vercel-py
  11. [11] feat(world-vercel): client-observed stream write/read e2e latency spans ↗ vercel/workflow
  12. [12] Report STSO step progress telemetry ↗ vercel/workflow

Quick answers

What shipped in Vercel on July 10, 2026?
Eve's extension system just went from concept to production-ready, while Next.js adds an experimental TypeScript CLI backend to sidestep the JS API bottleneck until TypeScript 7 lands officially. In total, 43 commits, 46 pull requests, and 5 releases landed.
Who contributed to Vercel on July 10, 2026?
8 developers shipped this update, including ctgowrie, AndrewBarba, dnukumamras, timneutkens, sampoder, elprans, ricardo-agz, and karthikscale3.
What were the notable Vercel updates?
feat(eve): mounted extensions, fix(eve): dev client - preserve remote URL query parameters, and fix(eve): dev auth - recover Vercel protection challenges.

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