Member-only story

I Asked AI to Refactor My JavaScript. Then I Reviewed Every Change.

Bestte

4 min read10 hours ago

--

The code got shorter. The tests passed. But something important had changed.

Press enter or click to view image in full size

One of the most convincing things about AI-generated code is how clean it can look.

You give it a function that’s a little too long, maybe a little repetitive, and a few seconds later, you get something that looks like it belongs in a code review.

Fewer lines. Familiar patterns. No obvious mistakes.

But here’s something I’ve been thinking about: when AI makes code cleaner, how do we know it hasn’t also changed what the code was supposed to do?

I wanted to explore that with a small JavaScript example.

Nothing complicated.…