Deno 2.8, Vercel's AI provider expansion, and Cloudflare's developer experience refinements

Deno 2.8 lands with a dozen new features

The biggest story this week is Deno v2.8, a major release that introduces workspace support for deno bump-version, a catalog: protocol for centralized dependency versions, and the implementation of module.registerHooks() for CommonJS and ESM. Six new CLI subcommands arrive: deno transpile, deno pack, deno bump-version, deno ci, deno why, and deno audit fix. Cold npm installs are now 3.66x faster, and the runtime upgrades TypeScript to 6.0.3 and V8 to 14.9. Network debugging is available directly in Chrome DevTools, and deno compile is now framework-aware. The changelog post also highlights import defer syntax — a forward-looking JavaScript feature — and text import stabilization.

AI SDKs: a new AWS provider and streaming fixes

Vercel's AI SDK saw particularly heavy activity. The headliner is the @ai-sdk/anthropic-aws v1.0.0 provider (with a matching canary release), enabling Anthropic model access through AWS infrastructure. Both the stable and canary Anthropic providers gained error handling for the websearch tool. The Google provider added search grounding support to generateImage, while Black Forest Labs fixed its fill pro model to use the correct image field. Gateway received a new service tier option (flex or priority), and the canary gateway also added optional Vercel team scoping for authentication. Both @ai-sdk/openai-compatible and its stable counterpart v2.0.48 now accept empty string role values in streaming delta chunks. MCP transport received a quality-of-life fix: duplicate auth refresh calls on HTTP transport are now deduplicated.

Cloudflare: smaller bundles, smarter tunnels, and new bindings

Cloudflare's Workers SDK shipped a bundle shrink worth noting. The vitest-pool-workers test utility now derives its external bundler list from package.json dependencies rather than a hand-maintained list, dropping the published bundle from ~489 KB to 125 KB — and eliminating accidental references to undici. The companion workers-utils package marked itself sideEffects: false for tree-shaking and moved undici to runtime dependencies.

The Vite plugin v1.38.0 prints a QR code alongside tunnel URLs when using wrangler dev --tunnel or tunnel: true — a small but pragmatic touch for mobile testing. Wrangler itself (v4.94.0) adds automatic AI skills installation for coding agents, with a --install-skills flag to skip the prompt, and the workerd runtime adds Kimi K2.6 model types and Web Search binding types. Miniflare v4.20260521.0 fixes TCP requests failing when outboundService is configured.

Next.js and Turborepo: defaults and fixes

Next.js v16.3.0-canary.26 enables three experimental features — varyParams, optimisticRouting, and cachedNavigations — by default. App Shell prefetches now respond on the server, and a Turbopack crash when node_modules/next is briefly unresolvable is fixed. The follow-up canary.27 reverts a change that included PPR routes in dynamicRoutes regardless of revalidate time, and prere renders static metadata under dynamic segments to canonical pathnames.

Turborepo v2.9.15-canary.6 restores task completion semantics and fixes nested Bun workspace dependency versions being lost. The subsequent canary.7 restores release PR auto-merge and adds gitignore matcher indexing. Vercel CLI v54.4.1 suppresses metrics query status output when using --format=json.