Ian's project post

AI-Powered Dependency Upgrade
Tags: aidevelopmentnextjsreacttailwind


Recently I decided to upgrade the dependencies of this very website. The stack was getting outdated, running Next.js 14, React 18, and Tailwind CSS 3. I wanted to bring everything up to the latest versions.

The Traditional Way

Normally, a major dependency upgrade like this would take hours, maybe even days. You need to read migration guides, fix breaking changes, test everything, and hope nothing breaks in production.

The upgrade involved:

  • Next.js 14 to 16 (with Turbopack)
  • React 18 to 19
  • Tailwind CSS 3 to 4 (complete rewrite with CSS-first config)
  • Font Awesome 6 to 7
  • Plus removing PWA support and fixing various bugs

That's a lot of breaking changes to handle manually.

The AI-Powered Way

Instead of spending my weekend reading documentation, I used an AI coding assistant to do the heavy lifting. The entire upgrade, from planning to a working PR, took about 15 minutes.

The AI:

  • Analyzed my current dependencies
  • Created a phased upgrade plan
  • Made all the necessary code changes
  • Fixed breaking changes as they appeared
  • Removed deprecated features (PWA support)
  • Created a clean PR with proper documentation

Time Saved

A conservative estimate for doing this manually:

  • Reading Next.js 14 to 16 migration guide: 30 minutes
  • Reading Tailwind 3 to 4 migration guide: 30 minutes
  • Fixing async params for Next.js 15+: 15 minutes
  • Converting Tailwind config to CSS-first: 20 minutes
  • Testing and debugging: 60 minutes
  • Total: ~2.5 hours minimum

With AI: 15 minutes

That's a 10x improvement in productivity.

Cost

The entire session, including planning, executing all phases, fixing bugs, and creating the PR, cost approximately $1.07 USD.

For less than the price of a coffee, I saved over 2 hours of tedious work.

The Twist

If you made it this far, here's a fun fact: this blog post was also written by the same AI that performed the upgrade.

I asked it to document the experience, and it wrote everything you just read. The AI even knew to follow the structure of my previous blog posts.

Welcome to the future of software development.