📊 Measured Impact — Acme Orders API (Express 4→5, Mongoose 6→7, Jest 27→29)
18 h
Estimated manual effort
201 min
With UpgradePilot
81%
Time saved
12/12
Tests green after upgrade
📈 Upgrade Plan (generated by the tool)
| # | Package | From | To | Risk | Manual (min) | Pilot (min) |
|---|---|---|---|---|---|---|
| 1 | jest | 27.5.1 | ^29.0.0 | 🟢 low | 0 | 0 |
| 2 | express | 4.18.2 | ^5.0.0 | 🔴 high | 568 | 107 |
| 3 | mongoose | 6.12.3 | ^7.0.0 | 🔴 high | 496 | 94 |
▶ Run the demo yourself (Node 18+)
git clone https://github.com/dragunxwho13/Upgrade-Pilot && cd Upgrade-Pilot npm install :: scan the frozen legacy app — watch every removed API light up node tool\cli.js scan --path ./sample-app-legacy :: generate the risk-scored migration plan node tool\cli.js plan --path ./sample-app-legacy :: verify the upgraded app — 12/12 green cd sample-app && npm test
🤖 The six-subagent crew
- Scanner — maps every deprecated/removed API usage, file & line precision
- Librarian — reads real migration guides (document understanding) → rule base
- Planner — risk-scored migration plan tailored to the codebase
- Codemod Crew — one parallel subagent per package
- Verifier — upgrades the manifest, runs tests, iterates to green
- Scribe — release notes, PR description, migration dossier