AI agent skill · by @Cap-go

Capacitor App Upgrade V4 To V5

Guides the agent through upgrading a Capacitor app from v4 to v5. Use when the project is on Capacitor 4 and needs the v5 migration path. Do not use for other major versions, plugin-only upgrades, or non-Capacitor apps.

Archived 2026-10-23 · Source updated 2026-07-13. Check the original repository for the latest version.

SKILL.md instructions

# Capacitor App Upgrade v4 to v5

Upgrade a Capacitor app from version 4 to version 5.

## When to Use This Skill

- User says the app is on Capacitor 4 and must move to v5
- User wants the exact v4 to v5 migration path
- User needs v5-specific native and package updates

## Live Project Snapshot

Current Capacitor packages from `package.json`:
!`node -e "const fs=require('fs');if(!fs.existsSync('package.json'))process.exit(0);const pkg=JSON.parse(fs.readFileSync('package.json','utf8'));const out=[];for(const section of ['dependencies','devDependencies']){for(const [name,version] of Object.entries(pkg[section]||{})){if(name.startsWith('@capacitor/'))out.push(section+'.'+name+'='+version)}}console.log(out.sort().join('\n'))"`

## Procedure

1. Start from the injected package snapshot and confirm the current `@capacitor/core` version.
2. Update all `@capacitor/*` packages to the v5-compatible range.
3. Review the v4 to v5 migration notes before editing native files.
4. Run `npm install`.
5. Sync with `npx cap sync`.
6. Verify the iOS and Android builds.

## Error Handling

- If the automated migration misses a package, update it manually before syncing again.
- If iOS fails, check the deployment target and Xcode compatibility for Capacitor 5.
- If Android fails, check the Gradle and Java requirements for Capacitor 5.