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next-upgrade

next-upgrade

github.com/vercel-labsDevelopment1.7k1.1k installsUpdated 34w ago
Repository

About next-upgrade

A skill that guides developers through upgrading an existing project to the latest Next.js version using official migration guides. Its workflow covers version checks, migration paths, codemods, dependency updates, and build testing.

Key features

  1. 01Check Next.js and related dependency versions
  2. 02Find the applicable official upgrade guide
  3. 03Plan incremental version migrations
  4. 04Run codemods first
  5. 05Update dependencies and TypeScript types
  6. 06Test builds and application behavior

Use cases

  1. 01Identify migration steps for a project
  2. 02Automate breaking-change transformations
  3. 03Upgrade Next.js and React dependencies together
  4. 04Verify builds and key functionality after upgrading

Install

Copy the command and run it in a terminal.

$npx skills add https://github.com/vercel-labs/openreview --skill next-upgrade

After installing, type/next-upgradein Claude Code to confirm it loaded.

Details

From the project README

Upgrade Next.js

Upgrade the current project to the latest Next.js version following official migration guides.

Instructions

  1. Detect current version: Read package.json to identify the current Next.js version and related dependencies (React, React DOM, etc.)

  2. Fetch the latest upgrade guide: Use WebFetch to get the official upgrade documentation:

  3. Determine upgrade path: Based on current version, identify which migration steps apply. For major version jumps, upgrade incrementally (e.g., 13 → 14 → 15).

  4. Run codemods first: Next.js provides codemods to automate breaking changes:

    npx @next/codemod@latest <transform> <path>

    Common transforms:

    • next-async-request-api - Updates async Request APIs (v15)
    • next-request-geo-ip - Migrates geo/ip properties (v15)
    • next-dynamic-access-named-export - Transforms dynamic imports (v15)

  5. Update dependencies: Upgrade Next.js and peer dependencies together:

    npm install next@latest react@latest react-dom@latest

  6. Review breaking changes: Check the upgrade guide for manual changes needed:

    • API changes (e.g., async params in v15)
    • Configuration changes in next.config.js
    • Deprecated features being removed

  7. Update TypeScript types (if applicable):

    npm install @types/react@latest @types/react-dom@latest

  8. Test the upgrade:

    • Run npm run build to check for build errors
    • Run npm run dev and test key functionality

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