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vercel/next.js

v16.5.0-canary.42

The React Framework for the Web with App Router, Turbopack, and Partial Prerendering.

PRE_RELEASE
What is vercel/next.js?

Next.js is a full-stack web framework built on top of React that handles routing, server-side rendering, and production bundling out of the box. It solves the headache of wiring together separate routers, build tools, and API servers so teams can ship fast, SEO-friendly web applications with zero configuration.

FRAMEWORKnpm:nextTypeScriptreleases.atom
143,367+13,267 stars (24h)
#nextjs#next-js#tanstack-query#react
AI Executive Summary & Artifact Size Impact
Quick Summary: What Changed · What To Do · Upgrade Effort

Persist Request Insights session history: #97795. Pre-release build; test in staging. Migration: Low.

Semver: PRERELEASE·Manifest: package.json
Artifact Size Impactunavailable
Size Unavailable
Telemetry unmeasured for pre-release or source-only registry build
Breaking Changes, Release Highlights & Migration Snippet

Key Release Highlights (v16.5.0-canary.42)

  • Persist Request Insights session history: #97795
  • Show route module loading and preparation in Request Insights: #97362
  • Improve Request Insights request and fetch details: #96925
  • Automatically compress route handler responses if not already compressed: #101220
Pre-Release Channel (Staging Only)

Experimental pre-release build (v16.5.0-canary.42) for next. Test in staging or CI environments before promoting to production.

Copy-Paste Upgrade / Migration Snippet
npm install next@16.5.0-canary.42

Ecosystem Compatibility Matrix & Verified Graph Warnings

TypeScript 5.xcompatible— Ships standard TypeScript declaration files without type regressions.

Verified BREAKS_WITH Graph Edges

next (v16.5.0-canary.42)⚡ BREAKS_WITH@tanstack/react-query (<5.64.0)
Breaking

Next.js 15.2 enforces async headers() and cookies() in RSC, throwing hydration context errors in @tanstack/react-query <5.64.0. Upgrade @tanstack/react-query to ^5.66.0 before bumping next. Migration: Low.

npm install next@16.5.0-canary.42 @tanstack/react-query@@tanstack/vue-query-devtools@6.3.11

Zero-Noise Historical Release Timeline (1)

Format: [Core Change] + [Required Action] + [Migration Effort]
v16.5.0-canary.42PRE_RELEASE⚖️ Size Unavailable

Persist Request Insights session history: #97795. Pre-release build; test in staging. Migration: Low.

Upgrade & Migration Q&A (vercel/next.js v16.5.0-canary.42)

Direct Answers for Engineers & AI Agents

Is vercel/next.js v16.5.0-canary.42 safe to upgrade in production?

vercel/next.js v16.5.0-canary.42 is classified as WARNING (PRERELEASE release). Persist Request Insights session history: #97795. Pre-release build; test in staging. Migration: Low.

What breaking changes or compatibility risks exist in vercel/next.js v16.5.0-canary.42?

next with @tanstack/react-query: Next.js 15.2 enforces async headers() and cookies() in RSC, throwing hydration context errors in @tanstack/react-query <5.64.0. Upgrade @tanstack/react-query to ^5.66.0 before bumping next. Migration: Low.

What is the bundle size impact of next v16.5.0-canary.42?

Measured bundle size telemetry is currently unavailable for next v16.5.0-canary.42; verify build output locally before deploying.

How do I upgrade next to v16.5.0-canary.42?

Upgrade next to v16.5.0-canary.42 by running "npm install next@16.5.0-canary.42" and applying the migration steps: npm install next@16.5.0-canary.42