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next-upgrade

next-upgrade

github.com/kokonut-labsDevelopment2.3k51 installsUpdated 2d ago
Repository

About next-upgrade

next-upgrade is a skill for bringing an existing Next.js project up to the latest version using official migration guides. It helps developers identify applicable changes, apply codemods, update dependencies, and test the result.

Key features

  1. 01Detects Next.js and related dependency versions
  2. 02Selects version-specific migration steps
  3. 03Applies codemods for breaking changes
  4. 04Updates dependencies and TypeScript types
  5. 05Checks the build and development app

Use cases

  1. 01Planning a major-version upgrade path
  2. 02Automating supported API migrations
  3. 03Reviewing configuration and API breaking changes
  4. 04Testing an upgraded Next.js project

Install

Copy the command and run it in a terminal.

$npx skills add https://github.com/kokonut-labs/kokonutui --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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