> ## Documentation Index
> Fetch the complete documentation index at: https://meganharrisonconsulting.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# next-upgrade

> Upgrade Next.js to the latest version following official migration guides and codemods. Use when upgrading Next.js versions, running codemods, or migrating between major releases.

This page is generated from the actual `SKILL.md` file on disk.

## Metadata

| Field               | Value                                                                                                                                                                               |
| ------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Source group        | Plugin Skills                                                                                                                                                                       |
| Source root         | `/Users/meganharrison/.codex/plugins/cache`                                                                                                                                         |
| Relative skill path | `vercel/vercel-plugin/61f1903bed7b322c9745f6ba67095bc006de7e63/skills/next-upgrade/SKILL.md`                                                                                        |
| Actual file         | `/Users/meganharrison/.codex/plugins/cache/vercel/vercel-plugin/61f1903bed7b322c9745f6ba67095bc006de7e63/skills/next-upgrade/SKILL.md`                                              |
| Description         | Upgrade Next.js to the latest version following official migration guides and codemods. Use when upgrading Next.js versions, running codemods, or migrating between major releases. |
| Docs overview       | [Plugin Skills](/skills/plugin-skills)                                                                                                                                              |

## Why this exists

Use this page when you want to review the real instructions behind a skill
without leaving the docs site. The content below is copied from the actual
`SKILL.md` file, not rewritten by hand.

## Raw SKILL.md

````md theme={null}
---
name: next-upgrade
description: Upgrade Next.js to the latest version following official migration guides and codemods. Use when upgrading Next.js versions, running codemods, or migrating between major releases.
metadata:
  priority: 6
  docs:
    - "https://nextjs.org/docs/app/guides/upgrading"
    - "https://nextjs.org/docs/app/guides/upgrading/codemods"
  pathPatterns:
    - 'next.config.*'
    - 'package.json'
  bashPatterns:
    - '\bnpx\s+@next/codemod\b'
    - '\bnpm\s+(install|i|add)\s+[^\n]*\bnext@'
    - '\bpnpm\s+(install|i|add)\s+[^\n]*\bnext@'
    - '\bbun\s+(install|i|add)\s+[^\n]*\bnext@'
    - '\byarn\s+add\s+[^\n]*\bnext@'
  promptSignals:
    phrases:
      - "upgrade next"
      - "upgrade nextjs"
      - "migrate next"
      - "update next.js"
      - "next.js upgrade"
      - "nextjs migration"
      - "next codemod"
    allOf:
      - [upgrade, next]
      - [migrate, next]
      - [update, nextjs]
    anyOf:
      - "breaking changes"
      - "codemod"
      - "migration guide"
      - "version upgrade"
    noneOf: []
    minScore: 6
retrieval:
  aliases:
    - next upgrade
    - nextjs migration
    - next codemod
  intents:
    - upgrade Next.js to latest version
    - run Next.js codemods
    - migrate between major Next.js versions
  entities:
    - codemod
    - migration
    - upgrade
    - breaking changes
chainTo:
  -
    pattern: 'getServerSideProps|getStaticProps|next/router|next/head|next/document'
    targetSkill: nextjs
    message: 'Pages Router patterns detected during upgrade — loading Next.js best practices for App Router migration.'

---

# 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:
   - Codemods: https://nextjs.org/docs/app/guides/upgrading/codemods
   - Version-specific guides (adjust version as needed):
     - https://nextjs.org/docs/app/guides/upgrading/version-16 
     - https://nextjs.org/docs/app/guides/upgrading/version-15
     - https://nextjs.org/docs/app/guides/upgrading/version-14

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:
   ```bash
   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:
   ```bash
   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):
   ```bash
   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

````